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<a href="QuEST__cpu__distributed_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">// Distributed under MIT licence. See https://github.com/QuEST-Kit/QuEST/blob/master/LICENCE.txt for details </span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160; </div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor"># include &quot;<a class="code" href="QuEST_8h.html">QuEST.h</a>&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor"># include &quot;<a class="code" href="QuEST__internal_8h.html">QuEST_internal.h</a>&quot;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor"># include &quot;<a class="code" href="QuEST__precision_8h.html">QuEST_precision.h</a>&quot;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor"># include &quot;<a class="code" href="QuEST__validation_8h.html">QuEST_validation.h</a>&quot;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor"># include &quot;<a class="code" href="mt19937ar_8h.html">mt19937ar.h</a>&quot;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160; </div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor"># include &quot;<a class="code" href="QuEST__cpu__internal_8h.html">QuEST_cpu_internal.h</a>&quot;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160; </div>
<div class="line"><a name="l00020"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ad3d8a3bd0c0b677acef144f2c2ef6d73">   20</a></span>&#160;<span class="preprocessor"># define _BSD_SOURCE</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor"># include &lt;unistd.h&gt;</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor"># include &lt;mpi.h&gt;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor"># include &lt;stdlib.h&gt;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor"># include &lt;stdio.h&gt;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor"># include &lt;string.h&gt;</span>    <span class="comment">// for memcpy</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor"># include &lt;math.h&gt;</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor"># include &lt;time.h&gt;</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor"># include &lt;sys/types.h&gt;</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160; </div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor"># include &lt;omp.h&gt;</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160; </div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160; </div>
<div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a7ebd3198a198f4cd20840f64fd8b84d0">   35</a></span>&#160;<a class="code" href="structComplex.html">Complex</a> <a class="code" href="QuEST__cpu__distributed_8c.html#a7ebd3198a198f4cd20840f64fd8b84d0">statevec_calcInnerProduct</a>(<a class="code" href="structQureg.html">Qureg</a> bra, <a class="code" href="structQureg.html">Qureg</a> ket) {</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    </div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    <a class="code" href="structComplex.html">Complex</a> localInnerProd = <a class="code" href="QuEST__cpu_8c.html#a6fbb3b693f25dde1e9e3dc87dc1984f7">statevec_calcInnerProductLocal</a>(bra, ket);</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    <span class="keywordflow">if</span> (bra.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a> == 1)</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;        <span class="keywordflow">return</span> localInnerProd;</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    </div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localReal = localInnerProd.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>;</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localImag = localInnerProd.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a>;</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalReal, globalImag;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    MPI_Allreduce(&amp;localReal, &amp;globalReal, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    MPI_Allreduce(&amp;localImag, &amp;globalImag, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    </div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    <a class="code" href="structComplex.html">Complex</a> globalInnerProd;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    globalInnerProd.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a> = globalReal;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    globalInnerProd.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a> = globalImag;</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    <span class="keywordflow">return</span> globalInnerProd;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;}</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160; </div>
<div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a6153547f245c05874161a105e9a2f02c">   53</a></span>&#160;<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#a6153547f245c05874161a105e9a2f02c">densmatr_calcTotalProb</a>(<a class="code" href="structQureg.html">Qureg</a> qureg) {</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;        </div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;        <span class="comment">// computes the trace by summing every element (&quot;diag&quot;) with global index (2^n + 1)i for i in [0, 2^n-1]</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;        </div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;        <span class="comment">// computes first local index containing a diagonal element</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;        <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> diagSpacing = 1LL + (1LL &lt;&lt; qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numPrevDiags = (qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>&gt;0)? 1+(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>*qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>)/diagSpacing : 0;</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;        <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> globalIndNextDiag = diagSpacing * numPrevDiags;</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;        <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> localIndNextDiag = globalIndNextDiag % qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;        <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        </div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;        <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> rankTotal = 0;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;        <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> y, t, c;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;        c = 0;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        </div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        <span class="comment">// iterates every local diagonal</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;        <span class="keywordflow">for</span> (index=localIndNextDiag; index &lt; qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>; index += diagSpacing) {</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;                </div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;                <span class="comment">// Kahan summation - brackets are important</span></div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;                y = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real[index] - c;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;                t = rankTotal + y;</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;                c = ( t - rankTotal ) - y;</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;                rankTotal = t;</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;        }</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;        </div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        <span class="comment">// combine each node&#39;s sum of diagonals</span></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;        <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalTotal;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;        <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a> &gt; 1)</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;                MPI_Allreduce(&amp;rankTotal, &amp;globalTotal, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        <span class="keywordflow">else</span></div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;                globalTotal = rankTotal;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;        </div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;        <span class="keywordflow">return</span> globalTotal;</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;}</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160; </div>
<div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ad65ad1b5ea6f30b0c6b4ffda96e1a8e6">   88</a></span>&#160;<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#ad65ad1b5ea6f30b0c6b4ffda96e1a8e6">statevec_calcTotalProb</a>(<a class="code" href="structQureg.html">Qureg</a> qureg){</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    <span class="comment">// Implemented using Kahan summation for greater accuracy at a slight floating</span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    <span class="comment">//   point operation overhead. For more details see https://en.wikipedia.org/wiki/Kahan_summation_algorithm</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> pTotal=0; </div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> y, t, c;</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> allRankTotals=0;</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index;</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numAmpsPerRank = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;    c = 0.0;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    <span class="keywordflow">for</span> (index=0; index&lt;numAmpsPerRank; index++){ </div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        <span class="comment">// Perform pTotal+=qureg.stateVec.real[index]*qureg.stateVec.real[index]; by Kahan</span></div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        y = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real[index]*qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real[index] - c;</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;        t = pTotal + y;</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;        <span class="comment">// Don&#39;t change the bracketing on the following line</span></div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;        c = ( t - pTotal ) - y;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;        pTotal = t;</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        <span class="comment">// Perform pTotal+=qureg.stateVec.imag[index]*qureg.stateVec.imag[index]; by Kahan</span></div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;        y = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag[index]*qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag[index] - c;</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;        t = pTotal + y;</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;        <span class="comment">// Don&#39;t change the bracketing on the following line</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;        c = ( t - pTotal ) - y;</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;        pTotal = t;</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    } </div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;    <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a>&gt;1)</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;                MPI_Allreduce(&amp;pTotal, &amp;allRankTotals, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;    <span class="keywordflow">else</span> </div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;                allRankTotals=pTotal;</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160; </div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    <span class="keywordflow">return</span> allRankTotals;</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;}</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160; </div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160; </div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#af0ea25f00987af4c53f17c9cca62ab41">isChunkToSkipInFindPZero</a>(<span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> measureQubit);</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(<span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit);</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(<span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit, <span class="keywordtype">int</span> numQubits);</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872">getRotAngle</a>(<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>, <a class="code" href="structComplex.html">Complex</a> *rot1, <a class="code" href="structComplex.html">Complex</a> *rot2, <a class="code" href="structComplex.html">Complex</a> alpha, <a class="code" href="structComplex.html">Complex</a> beta);</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>, <span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit);</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>, <span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit, <span class="keywordtype">int</span> numQubits);</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(<span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit);</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a28be36627b2dd9a0da63dd6f60121b06">getChunkIdFromIndex</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index);</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160; </div>
<div class="line"><a name="l00129"></a><span class="lineno"><a class="line" href="group__type.html#ga8ba2c3388dd64d9348c3b091852d36d4">  129</a></span>&#160;<a class="code" href="structQuESTEnv.html">QuESTEnv</a> <a class="code" href="group__type.html#ga8ba2c3388dd64d9348c3b091852d36d4">createQuESTEnv</a>(<span class="keywordtype">void</span>) {</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;    </div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    <a class="code" href="structQuESTEnv.html">QuESTEnv</a> env;</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    </div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    <span class="comment">// init MPI environment</span></div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    <span class="keywordtype">int</span> rank, numRanks, initialized;</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    MPI_Initialized(&amp;initialized);</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    <span class="keywordflow">if</span> (!initialized){</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;        MPI_Init(NULL, NULL);</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;        MPI_Comm_size(MPI_COMM_WORLD, &amp;numRanks);</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;        MPI_Comm_rank(MPI_COMM_WORLD, &amp;rank);</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160; </div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        env.<a class="code" href="structQuESTEnv.html#aa648bb336cf8598467cb62db00b9cee8">rank</a>=rank;</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;        env.<a class="code" href="structQuESTEnv.html#af22aacd7c9905accae28484785c193b4">numRanks</a>=numRanks;</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160; </div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;        </div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;        printf(<span class="stringliteral">&quot;ERROR: Trying to initialize QuESTEnv multiple times. Ignoring...\n&quot;</span>);</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;        </div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        <span class="comment">// ensure env is initialised anyway, so the compiler is happy</span></div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;        MPI_Comm_size(MPI_COMM_WORLD, &amp;numRanks);</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;        MPI_Comm_rank(MPI_COMM_WORLD, &amp;rank);</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;        env.<a class="code" href="structQuESTEnv.html#aa648bb336cf8598467cb62db00b9cee8">rank</a>=rank;</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;        env.<a class="code" href="structQuESTEnv.html#af22aacd7c9905accae28484785c193b4">numRanks</a>=numRanks;</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;        }</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;    </div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    <a class="code" href="QuEST__validation_8c.html#ad893327ebd2123508493d445868bfcd7">validateNumRanks</a>(env.<a class="code" href="structQuESTEnv.html#af22aacd7c9905accae28484785c193b4">numRanks</a>, __func__);</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    </div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;    env.<a class="code" href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">seeds</a> = NULL;</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;    env.<a class="code" href="structQuESTEnv.html#a46e67e1a5ab930e04ff59f83f1d8630d">numSeeds</a> = 0;</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;        <a class="code" href="group__debug.html#gae53fad7ebafccf236ad62b41e3244214">seedQuESTDefault</a>(&amp;env);</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    </div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    <span class="keywordflow">return</span> env;</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;}</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160; </div>
<div class="line"><a name="l00164"></a><span class="lineno"><a class="line" href="group__debug.html#ga8d31fe2d1ad4d01e2a1f5f6b8bc15b77">  164</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__debug.html#ga8d31fe2d1ad4d01e2a1f5f6b8bc15b77">syncQuESTEnv</a>(<a class="code" href="structQuESTEnv.html">QuESTEnv</a> env){</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;    MPI_Barrier(MPI_COMM_WORLD);</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;}</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160; </div>
<div class="line"><a name="l00168"></a><span class="lineno"><a class="line" href="group__debug.html#gac7e38d768a1bd79019f88cc1e6295092">  168</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="group__debug.html#gac7e38d768a1bd79019f88cc1e6295092">syncQuESTSuccess</a>(<span class="keywordtype">int</span> successCode){</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    <span class="keywordtype">int</span> totalSuccess;</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    MPI_Allreduce(&amp;successCode, &amp;totalSuccess, 1, MPI_INT, MPI_LAND, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;    <span class="keywordflow">return</span> totalSuccess;</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;}</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160; </div>
<div class="line"><a name="l00174"></a><span class="lineno"><a class="line" href="group__type.html#gaeff624226629d7063a8a776958a4f991">  174</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__type.html#gaeff624226629d7063a8a776958a4f991">destroyQuESTEnv</a>(<a class="code" href="structQuESTEnv.html">QuESTEnv</a> env){</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;    free(env.<a class="code" href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">seeds</a>);</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    </div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    <span class="keywordtype">int</span> finalized;</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    MPI_Finalized(&amp;finalized);</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;    <span class="keywordflow">if</span> (!finalized) MPI_Finalize();</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;    <span class="keywordflow">else</span> printf(<span class="stringliteral">&quot;ERROR: Trying to close QuESTEnv multiple times. Ignoring\n&quot;</span>);</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;}</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160; </div>
<div class="line"><a name="l00183"></a><span class="lineno"><a class="line" href="group__debug.html#gaf8a14ae79c3fb2c0b5f6255cc37bebf9">  183</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__debug.html#gaf8a14ae79c3fb2c0b5f6255cc37bebf9">reportQuESTEnv</a>(<a class="code" href="structQuESTEnv.html">QuESTEnv</a> env){</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;    <span class="keywordflow">if</span> (env.<a class="code" href="structQuESTEnv.html#aa648bb336cf8598467cb62db00b9cee8">rank</a>==0){</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;        printf(<span class="stringliteral">&quot;EXECUTION ENVIRONMENT:\n&quot;</span>); </div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;        printf(<span class="stringliteral">&quot;Running distributed (MPI) version\n&quot;</span>);</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;        printf(<span class="stringliteral">&quot;Number of ranks is %d\n&quot;</span>, env.<a class="code" href="structQuESTEnv.html#af22aacd7c9905accae28484785c193b4">numRanks</a>);</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;<span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;        printf(<span class="stringliteral">&quot;OpenMP enabled\n&quot;</span>);</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;        printf(<span class="stringliteral">&quot;Number of threads available is %d\n&quot;</span>, omp_get_max_threads());</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;<span class="preprocessor"># else</span></div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;        printf(<span class="stringliteral">&quot;OpenMP disabled\n&quot;</span>);</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;<span class="preprocessor"># endif </span></div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;        printf(<span class="stringliteral">&quot;Precision: size of qreal is %ld bytes\n&quot;</span>, <span class="keyword">sizeof</span>(<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>) );</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;    }</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;}</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160; </div>
<div class="line"><a name="l00198"></a><span class="lineno"><a class="line" href="group__debug.html#gadc5c01d8ea32e28c188db52be26116b6">  198</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__debug.html#gadc5c01d8ea32e28c188db52be26116b6">getEnvironmentString</a>(<a class="code" href="structQuESTEnv.html">QuESTEnv</a> env, <span class="keywordtype">char</span> str[200]){</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;    <span class="keywordtype">int</span> ompStatus=0;</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;    <span class="keywordtype">int</span> numThreads=1;</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;<span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;    ompStatus=1;</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;    numThreads=omp_get_max_threads(); </div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;<span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;    sprintf(str, <span class="stringliteral">&quot;CUDA=0 OpenMP=%d MPI=1 threads=%d ranks=%d&quot;</span>, ompStatus, numThreads, env.<a class="code" href="structQuESTEnv.html#af22aacd7c9905accae28484785c193b4">numRanks</a>);</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;}</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160; </div>
<div class="line"><a name="l00208"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a28be36627b2dd9a0da63dd6f60121b06">  208</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a28be36627b2dd9a0da63dd6f60121b06">getChunkIdFromIndex</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index){</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;    <span class="keywordflow">return</span> index/qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>; <span class="comment">// this is numAmpsPerChunk</span></div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;}</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160; </div>
<div class="line"><a name="l00212"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#abc9a9ef4344c7faaaf28ac25c76649b9">  212</a></span>&#160;<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#abc9a9ef4344c7faaaf28ac25c76649b9">statevec_getRealAmp</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index){</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    <span class="keywordtype">int</span> chunkId = <a class="code" href="QuEST__cpu__distributed_8c.html#a28be36627b2dd9a0da63dd6f60121b06">getChunkIdFromIndex</a>(qureg, index);</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> el; </div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>==chunkId){</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;        el = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real[index-chunkId*qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>];</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;    }</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;    MPI_Bcast(&amp;el, 1, MPI_QuEST_REAL, chunkId, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;    <span class="keywordflow">return</span> el; </div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;} </div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160; </div>
<div class="line"><a name="l00222"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#abd509244d57657e148e4084c5ab5d28f">  222</a></span>&#160;<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#abd509244d57657e148e4084c5ab5d28f">statevec_getImagAmp</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index){</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    <span class="keywordtype">int</span> chunkId = <a class="code" href="QuEST__cpu__distributed_8c.html#a28be36627b2dd9a0da63dd6f60121b06">getChunkIdFromIndex</a>(qureg, index);</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> el; </div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;    <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>==chunkId){</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;        el = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag[index-chunkId*qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>];</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    }</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    MPI_Bcast(&amp;el, 1, MPI_QuEST_REAL, chunkId, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;    <span class="keywordflow">return</span> el; </div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;}</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160; </div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(<span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;{       </div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeHalfBlock = 1LL &lt;&lt; (targetQubit);</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeBlock = sizeHalfBlock*2;</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> posInBlock = (chunkId*chunkSize) % sizeBlock;</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;    <span class="keywordflow">return</span> posInBlock&lt;sizeHalfBlock;</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;}</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160; </div>
<div class="line"><a name="l00250"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">  250</a></span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(<span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit, <span class="keywordtype">int</span> numQubits)</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;{       </div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterHalfBlock = 1LL &lt;&lt; (targetQubit+numQubits);</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterBlock = sizeOuterHalfBlock*2;</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> posInBlock = (chunkId*chunkSize) % sizeOuterBlock;</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;    <span class="keywordflow">return</span> posInBlock&lt;sizeOuterHalfBlock;</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;}</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160; </div>
<div class="line"><a name="l00272"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872">  272</a></span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872">getRotAngle</a>(<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>, <a class="code" href="structComplex.html">Complex</a> *rot1, <a class="code" href="structComplex.html">Complex</a> *rot2, <a class="code" href="structComplex.html">Complex</a> alpha, <a class="code" href="structComplex.html">Complex</a> beta)</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;{</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>){</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;        *rot1=alpha;</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;        rot2-&gt;<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>=-beta.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>;</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;        rot2-&gt;<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a>=-beta.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a>;</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;        *rot1=beta;</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;        *rot2=alpha;</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;    }</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;}</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160; </div>
<div class="line"><a name="l00297"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17">  297</a></span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17">getRotAngleFromUnitaryMatrix</a>(<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>, <a class="code" href="structComplex.html">Complex</a> *rot1, <a class="code" href="structComplex.html">Complex</a> *rot2, <a class="code" href="structComplexMatrix2.html">ComplexMatrix2</a> u)</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;{</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>){</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;        *rot1=(<a class="code" href="structComplex.html">Complex</a>) {.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>=u.<a class="code" href="structComplexMatrix2.html#a3ea98d545b67a190ee6abe936c72076f">real</a>[0][0], .imag=u.<a class="code" href="structComplexMatrix2.html#a3a2b60a9e00ccef054a6de3b9307c1be">imag</a>[0][0]};</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;        *rot2=(<a class="code" href="structComplex.html">Complex</a>) {.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>=u.<a class="code" href="structComplexMatrix2.html#a3ea98d545b67a190ee6abe936c72076f">real</a>[0][1], .imag=u.<a class="code" href="structComplexMatrix2.html#a3a2b60a9e00ccef054a6de3b9307c1be">imag</a>[0][1]};</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;        *rot1=(<a class="code" href="structComplex.html">Complex</a>) {.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>=u.<a class="code" href="structComplexMatrix2.html#a3ea98d545b67a190ee6abe936c72076f">real</a>[1][0], .imag=u.<a class="code" href="structComplexMatrix2.html#a3a2b60a9e00ccef054a6de3b9307c1be">imag</a>[1][0]};</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;        *rot2=(<a class="code" href="structComplex.html">Complex</a>) {.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>=u.<a class="code" href="structComplexMatrix2.html#a3ea98d545b67a190ee6abe936c72076f">real</a>[1][1], .imag=u.<a class="code" href="structComplexMatrix2.html#a3a2b60a9e00ccef054a6de3b9307c1be">imag</a>[1][1]};</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;    }</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;}</div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160; </div>
<div class="line"><a name="l00317"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">  317</a></span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>, <span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;{</div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeHalfBlock = 1LL &lt;&lt; (targetQubit);</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;    <span class="keywordtype">int</span> chunksPerHalfBlock = sizeHalfBlock/chunkSize;</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>){</div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;        <span class="keywordflow">return</span> chunkId + chunksPerHalfBlock;</div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;        <span class="keywordflow">return</span> chunkId - chunksPerHalfBlock;</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;    }</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;}</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160; </div>
<div class="line"><a name="l00328"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">  328</a></span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>, <span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit, <span class="keywordtype">int</span> numQubits)</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;{</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterHalfBlock = 1LL &lt;&lt; (targetQubit+numQubits);</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;    <span class="keywordtype">int</span> chunksPerOuterHalfBlock = sizeOuterHalfBlock/chunkSize;</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>){</div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;        <span class="keywordflow">return</span> chunkId + chunksPerOuterHalfBlock;</div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;        <span class="keywordflow">return</span> chunkId - chunksPerOuterHalfBlock;</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;    }</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;}</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160; </div>
<div class="line"><a name="l00339"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ab1ec7f241b68b079c8e316d190af49ce">  339</a></span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ab1ec7f241b68b079c8e316d190af49ce">getChunkOuterBlockPairIdForPart3</a>(<span class="keywordtype">int</span> chunkIsUpperSmallerQubit, <span class="keywordtype">int</span> chunkIsUpperBiggerQubit, <span class="keywordtype">int</span> chunkId, </div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;        <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> smallerQubit, <span class="keywordtype">int</span> biggerQubit, <span class="keywordtype">int</span> numQubits)</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;{</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterHalfBlockBiggerQubit = 1LL &lt;&lt; (biggerQubit+numQubits);</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterHalfBlockSmallerQubit = 1LL &lt;&lt; (smallerQubit+numQubits);</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;    <span class="keywordtype">int</span> chunksPerOuterHalfBlockSmallerQubit = sizeOuterHalfBlockSmallerQubit/chunkSize;</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;    <span class="keywordtype">int</span> chunksPerOuterHalfBlockBiggerQubit = sizeOuterHalfBlockBiggerQubit/chunkSize;</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;    <span class="keywordtype">int</span> rank;</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;    <span class="keywordflow">if</span> (chunkIsUpperBiggerQubit){</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;        rank = chunkId + chunksPerOuterHalfBlockBiggerQubit;</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;        rank = chunkId - chunksPerOuterHalfBlockBiggerQubit;</div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;    }</div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160; </div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;    <span class="keywordflow">if</span> (chunkIsUpperSmallerQubit){</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;        rank = rank + chunksPerOuterHalfBlockSmallerQubit;</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;        rank = rank - chunksPerOuterHalfBlockSmallerQubit;</div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;    }</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160; </div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;    <span class="keywordflow">return</span> rank;</div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;}</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160; </div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(<span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;{</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeHalfBlock = 1LL &lt;&lt; (targetQubit);</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;    <span class="keywordflow">if</span> (chunkSize &gt; sizeHalfBlock) <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;    <span class="keywordflow">else</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;}</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160; </div>
<div class="line"><a name="l00377"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015">  377</a></span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015">densityMatrixBlockFitsInChunk</a>(<span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> numQubits, <span class="keywordtype">int</span> targetQubit) {</div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterHalfBlock = 1LL &lt;&lt; (targetQubit+numQubits);</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;    <span class="keywordflow">if</span> (chunkSize &gt; sizeOuterHalfBlock) <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;    <span class="keywordflow">else</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;}</div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160; </div>
<div class="line"><a name="l00385"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a95af772d87c461fc8abfd6d47b752ac2">  385</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a95af772d87c461fc8abfd6d47b752ac2">copyVecIntoMatrixPairState</a>(<a class="code" href="structQureg.html">Qureg</a> matr, <a class="code" href="structQureg.html">Qureg</a> vec) {</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;    </div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;    <span class="comment">// Remember that for every amplitude that `vec` stores on the node,</span></div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;    <span class="comment">// `matr` stores an entire column. Ergo there are always an integer</span></div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;    <span class="comment">// number (in fact, a power of 2) number of  `matr`s columns on each node.</span></div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;    <span class="comment">// Since the total size of `vec` (between all nodes) is one column</span></div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;    <span class="comment">// and each node stores (possibly) multiple columns (vec.numAmpsPerChunk as many), </span></div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;    <span class="comment">// `vec` can be fit entirely inside a single node&#39;s matr.pairStateVec (with excess!)</span></div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;    </div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;    <span class="comment">// copy this node&#39;s vec segment into this node&#39;s matr pairState (in the right spot)</span></div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numLocalAmps = vec.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> myOffset = vec.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a> * numLocalAmps;</div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;    memcpy(&amp;matr.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[myOffset], vec.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real, numLocalAmps * <span class="keyword">sizeof</span>(<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>));</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;    memcpy(&amp;matr.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[myOffset], vec.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag, numLocalAmps * <span class="keyword">sizeof</span>(<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>));</div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;    </div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;    <span class="comment">// we now want to share this node&#39;s vec segment with other node, so that </span></div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;    <span class="comment">// vec is cloned in every node&#39;s matr.pairStateVec </span></div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160; </div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;    <span class="comment">// work out how many messages needed to send vec chunks (2GB limit)</span></div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> maxMsgSize = MPI_MAX_AMPS_IN_MSG;</div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;    <span class="keywordflow">if</span> (numLocalAmps &lt; maxMsgSize) </div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;        maxMsgSize = numLocalAmps;</div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;    <span class="comment">// safely assume MPI_MAX... = 2^n, so division always exact:</span></div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;    <span class="keywordtype">int</span> numMsgs = numLocalAmps / maxMsgSize;</div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;    </div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;    <span class="comment">// every node gets a turn at being the broadcaster</span></div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> broadcaster=0; broadcaster &lt; vec.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a>; broadcaster++) {</div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;        </div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;        <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> otherOffset = broadcaster * numLocalAmps;</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;    </div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;        <span class="comment">// every node sends a slice of qureg&#39;s pairState to every other</span></div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i&lt; numMsgs; i++) {</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;    </div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;            <span class="comment">// by sending that slice in further slices (due to bandwidth limit)</span></div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;            MPI_Bcast(</div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;                &amp;matr.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[otherOffset + i*maxMsgSize], </div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;                maxMsgSize,  MPI_QuEST_REAL, broadcaster, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;            MPI_Bcast(</div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;                &amp;matr.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[otherOffset + i*maxMsgSize], </div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;                maxMsgSize,  MPI_QuEST_REAL, broadcaster, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;        }</div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;    }</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;}</div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160; </div>
<div class="line"><a name="l00429"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#aa6c3f86010ad398f42b0577ea3bb5bcf">  429</a></span>&#160;<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#aa6c3f86010ad398f42b0577ea3bb5bcf">densmatr_calcFidelity</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <a class="code" href="structQureg.html">Qureg</a> pureState) {</div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;    </div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;    <span class="comment">// set qureg&#39;s pairState is to be the full pureState (on every node)</span></div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;    <a class="code" href="QuEST__cpu__distributed_8c.html#a95af772d87c461fc8abfd6d47b752ac2">copyVecIntoMatrixPairState</a>(qureg, pureState);</div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160; </div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;    <span class="comment">// collect calcFidelityLocal by every machine</span></div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localSum = <a class="code" href="QuEST__cpu_8c.html#a7772f97cb4d92a9825bf3b7c82c3230c">densmatr_calcFidelityLocal</a>(qureg, pureState);</div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;    </div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;    <span class="comment">// sum each localSum</span></div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalSum;</div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;    MPI_Allreduce(&amp;localSum, &amp;globalSum, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;    </div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;    <span class="keywordflow">return</span> globalSum;</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;}</div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160; </div>
<div class="line"><a name="l00444"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a8c9da88f734b0862f4cce7d819e6d3b5">  444</a></span>&#160;<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#a8c9da88f734b0862f4cce7d819e6d3b5">densmatr_calcHilbertSchmidtDistance</a>(<a class="code" href="structQureg.html">Qureg</a> a, <a class="code" href="structQureg.html">Qureg</a> b) {</div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;    </div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localSum = <a class="code" href="QuEST__cpu_8c.html#a939897137596bb73ad7a028d0beaaa10">densmatr_calcHilbertSchmidtDistanceSquaredLocal</a>(a, b);</div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;    </div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalSum;</div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;    MPI_Allreduce(&amp;localSum, &amp;globalSum, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;    </div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> dist = sqrt(globalSum);</div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;    <span class="keywordflow">return</span> dist;</div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;}</div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160; </div>
<div class="line"><a name="l00455"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a6ff3dc624b5fafe8edae4fe327c255a0">  455</a></span>&#160;<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#a6ff3dc624b5fafe8edae4fe327c255a0">densmatr_calcInnerProduct</a>(<a class="code" href="structQureg.html">Qureg</a> a, <a class="code" href="structQureg.html">Qureg</a> b) {</div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;    </div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localSum = <a class="code" href="QuEST__cpu_8c.html#a08392b1b27d10e3b8a8648a5afeaa629">densmatr_calcInnerProductLocal</a>(a, b);</div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;    </div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalSum;</div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;    MPI_Allreduce(&amp;localSum, &amp;globalSum, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;    </div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> dist = globalSum;</div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;    <span class="keywordflow">return</span> dist;</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;}</div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160; </div>
<div class="line"><a name="l00466"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ae5ad68d054875913d0f7ec654840a9ec">  466</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ae5ad68d054875913d0f7ec654840a9ec">densmatr_initPureState</a>(<a class="code" href="structQureg.html">Qureg</a> targetQureg, <a class="code" href="structQureg.html">Qureg</a> copyQureg) {</div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160; </div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;    <span class="keywordflow">if</span> (targetQureg.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a>==1){</div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;        <span class="comment">// local version</span></div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;        <span class="comment">// save pointers to qureg&#39;s pair state</span></div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;        <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* quregPairRePtr = targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real;</div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;        <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* quregPairImPtr = targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag;</div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160; </div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;        <span class="comment">// populate qureg pair state with pure state (by repointing)</span></div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;        targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real = copyQureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real;</div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;        targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag = copyQureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag;</div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160; </div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;        <span class="comment">// populate density matrix via it&#39;s pairState</span></div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a1b36518c8fbbc3a5084bb4ad1fb05ea5">densmatr_initPureStateLocal</a>(targetQureg, copyQureg);</div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160; </div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;        <span class="comment">// restore pointers</span></div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;        targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real = quregPairRePtr;</div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;        targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag = quregPairImPtr;</div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;        <span class="comment">// set qureg&#39;s pairState is to be the full pure state (on every node)</span></div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#a95af772d87c461fc8abfd6d47b752ac2">copyVecIntoMatrixPairState</a>(targetQureg, copyQureg);</div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;        </div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;        <span class="comment">// update every density matrix chunk using pairState</span></div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a1b36518c8fbbc3a5084bb4ad1fb05ea5">densmatr_initPureStateLocal</a>(targetQureg, copyQureg);</div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;    }</div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;}</div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160; </div>
<div class="line"><a name="l00493"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">  493</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> pairRank){</div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;    <span class="comment">// MPI send/receive vars</span></div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;    <span class="keywordtype">int</span> TAG=100;</div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;    MPI_Status status;</div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160; </div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;    <span class="comment">// Multiple messages are required as MPI uses int rather than long long int for count</span></div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;    <span class="comment">// For openmpi, messages are further restricted to 2GB in size -- do this for all cases</span></div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;    <span class="comment">// to be safe</span></div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> maxMessageCount = MPI_MAX_AMPS_IN_MSG;</div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;    <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a> &lt; maxMessageCount) </div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;        maxMessageCount = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;    </div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;    <span class="comment">// safely assume MPI_MAX... = 2^n, so division always exact</span></div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;    <span class="keywordtype">int</span> numMessages = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>/maxMessageCount;</div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;    <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> offset;</div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;    <span class="comment">// send my state vector to pairRank&#39;s qureg.pairStateVec</span></div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;    <span class="comment">// receive pairRank&#39;s state vector into qureg.pairStateVec</span></div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;    <span class="keywordflow">for</span> (i=0; i&lt;numMessages; i++){</div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;        offset = i*maxMessageCount;</div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;        MPI_Sendrecv(&amp;qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real[offset], maxMessageCount, MPI_QuEST_REAL, pairRank, TAG,</div>
<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;                &amp;qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[offset], maxMessageCount, MPI_QuEST_REAL,</div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;                pairRank, TAG, MPI_COMM_WORLD, &amp;status);</div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;        <span class="comment">//printf(&quot;rank: %d err: %d\n&quot;, qureg.rank, err);</span></div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;        MPI_Sendrecv(&amp;qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag[offset], maxMessageCount, MPI_QuEST_REAL, pairRank, TAG,</div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;                &amp;qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[offset], maxMessageCount, MPI_QuEST_REAL,</div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;                pairRank, TAG, MPI_COMM_WORLD, &amp;status);</div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;    }</div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;}</div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160; </div>
<div class="line"><a name="l00523"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">  523</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> pairRank){</div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;    <span class="comment">// MPI send/receive vars</span></div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;    <span class="keywordtype">int</span> TAG=100;</div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;    MPI_Status status;</div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numAmpsToSend = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a> &gt;&gt; 1;</div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160; </div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;    <span class="comment">// Multiple messages are required as MPI uses int rather than long long int for count</span></div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;    <span class="comment">// For openmpi, messages are further restricted to 2GB in size -- do this for all cases</span></div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;    <span class="comment">// to be safe</span></div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> maxMessageCount = MPI_MAX_AMPS_IN_MSG;</div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;    <span class="keywordflow">if</span> (numAmpsToSend &lt; maxMessageCount) </div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;        maxMessageCount = numAmpsToSend;</div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;    </div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;    <span class="comment">// safely assume MPI_MAX... = 2^n, so division always exact</span></div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;    <span class="keywordtype">int</span> numMessages = numAmpsToSend/maxMessageCount;</div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;    <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> offset;</div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;    <span class="comment">// send the bottom half of my state vector to the top half of pairRank&#39;s qureg.pairStateVec</span></div>
<div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;    <span class="comment">// receive pairRank&#39;s state vector into the top of qureg.pairStateVec</span></div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;    <span class="keywordflow">for</span> (i=0; i&lt;numMessages; i++){</div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;        offset = i*maxMessageCount;</div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;        MPI_Sendrecv(&amp;qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[offset+numAmpsToSend], maxMessageCount, </div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;                MPI_QuEST_REAL, pairRank, TAG,</div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;                &amp;qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[offset], maxMessageCount, MPI_QuEST_REAL,</div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;                pairRank, TAG, MPI_COMM_WORLD, &amp;status);</div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;        <span class="comment">//printf(&quot;rank: %d err: %d\n&quot;, qureg.rank, err);</span></div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;        MPI_Sendrecv(&amp;qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[offset+numAmpsToSend], maxMessageCount, </div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;                MPI_QuEST_REAL, pairRank, TAG,</div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;                &amp;qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[offset], maxMessageCount, MPI_QuEST_REAL,</div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;                pairRank, TAG, MPI_COMM_WORLD, &amp;status);</div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;    }</div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;}</div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160; </div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;<span class="comment">// @todo decide where this function should go. It is a preparation for MPI data transfer function</span></div>
<div class="line"><a name="l00557"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a0eb14d48920ea469b0904ae63b47b589">  557</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0eb14d48920ea469b0904ae63b47b589">compressPairVectorForSingleQubitDepolarise</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit){</div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeInnerBlock, sizeInnerHalfBlock;</div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterColumn, sizeOuterHalfColumn;</div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> thisInnerBlock, <span class="comment">// current block</span></div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;         thisOuterColumn, <span class="comment">// current column in density matrix</span></div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;         thisIndex,    <span class="comment">// current index in (density matrix representation) state vector</span></div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;         thisIndexInOuterColumn,</div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;         thisIndexInInnerBlock;</div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;         </div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;    <span class="keywordtype">int</span> outerBit;</div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160; </div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> thisTask;</div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numTasks=qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>&gt;&gt;1;</div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160; </div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;    <span class="comment">// set dimensions</span></div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;    sizeInnerHalfBlock = 1LL &lt;&lt; targetQubit;</div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;    sizeInnerBlock     = 2LL * sizeInnerHalfBlock;</div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;    sizeOuterHalfColumn = 1LL &lt;&lt; qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>;</div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;    sizeOuterColumn     = 2LL * sizeOuterHalfColumn;</div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160; </div>
<div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;<span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;<span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;<span class="preprocessor">    default  (none) \</span></div>
<div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;<span class="preprocessor">    shared   (sizeInnerBlock,sizeInnerHalfBlock,sizeOuterColumn,sizeOuterHalfColumn, \</span></div>
<div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;<span class="preprocessor">                qureg,numTasks,targetQubit) \</span></div>
<div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;<span class="preprocessor">    private  (thisTask,thisInnerBlock,thisOuterColumn,thisIndex,thisIndexInOuterColumn, \</span></div>
<div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;<span class="preprocessor">                thisIndexInInnerBlock,outerBit) </span></div>
<div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;<span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;    {</div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;<span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;<span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;<span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;        <span class="comment">// thisTask iterates over half the elements in this process&#39; chunk of the density matrix</span></div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;        <span class="comment">// treat this as iterating over all columns, then iterating over half the values</span></div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;        <span class="comment">// within one column.</span></div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;        <span class="comment">// If this function has been called, this process&#39; chunk contains half an </span></div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;        <span class="comment">// outer block or less</span></div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;        <span class="keywordflow">for</span> (thisTask=0; thisTask&lt;numTasks; thisTask++) {</div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;            <span class="comment">// we want to process all columns in the density matrix,</span></div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;            <span class="comment">// updating the values for half of each column (one half of each inner block)</span></div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;            thisOuterColumn = thisTask / sizeOuterHalfColumn;</div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;            thisIndexInOuterColumn = thisTask&amp;(sizeOuterHalfColumn-1); <span class="comment">// thisTask % sizeOuterHalfColumn</span></div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;            thisInnerBlock = thisIndexInOuterColumn/sizeInnerHalfBlock;</div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;            <span class="comment">// get index in state vector corresponding to upper inner block</span></div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;            thisIndexInInnerBlock = thisTask&amp;(sizeInnerHalfBlock-1); <span class="comment">// thisTask % sizeInnerHalfBlock</span></div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;            thisIndex = thisOuterColumn*sizeOuterColumn + thisInnerBlock*sizeInnerBlock</div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;                + thisIndexInInnerBlock;</div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;            <span class="comment">// check if we are in the upper or lower half of an outer block</span></div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;            outerBit = <a class="code" href="QuEST__gpu_8cu.html#aec1852e1a8e70d3690919ce8ab551ba0">extractBit</a>(targetQubit, (thisIndex+qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>*qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>)&gt;&gt;qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;            <span class="comment">// if we are in the lower half of an outer block, shift to be in the lower half</span></div>
<div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;            <span class="comment">// of the inner block as well (we want to dephase |0&gt;&lt;0| and |1&gt;&lt;1| only)</span></div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;            thisIndex += outerBit*(sizeInnerHalfBlock);</div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160; </div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;            <span class="comment">// NOTE: at this point thisIndex should be the index of the element we want to </span></div>
<div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;            <span class="comment">// dephase in the chunk of the state vector on this process, in the </span></div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;            <span class="comment">// density matrix representation. </span></div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;            <span class="comment">// thisTask is the index of the pair element in pairStateVec</span></div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;            <span class="comment">// we will populate the second half of pairStateVec with this process&#39;</span></div>
<div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;            <span class="comment">// data to send</span></div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160; </div>
<div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;            qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[thisTask+numTasks] = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real[thisIndex];</div>
<div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;            qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[thisTask+numTasks] = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag[thisIndex];</div>
<div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160; </div>
<div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;        }</div>
<div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;    }</div>
<div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;}</div>
<div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160; </div>
<div class="line"><a name="l00624"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">  624</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">compressPairVectorForTwoQubitDepolarise</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit,</div>
<div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;        <span class="keywordtype">int</span> qubit2) {</div>
<div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160; </div>
<div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeInnerBlockQ1, sizeInnerHalfBlockQ1;</div>
<div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeInnerBlockQ2, sizeInnerHalfBlockQ2, sizeInnerQuarterBlockQ2;</div>
<div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterColumn, sizeOuterQuarterColumn;</div>
<div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> </div>
<div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;         thisInnerBlockQ2,</div>
<div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;         thisOuterColumn, <span class="comment">// current column in density matrix</span></div>
<div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;         thisIndex,    <span class="comment">// current index in (density matrix representation) state vector</span></div>
<div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;         thisIndexInOuterColumn,</div>
<div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;         thisIndexInInnerBlockQ1,</div>
<div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;         thisIndexInInnerBlockQ2,</div>
<div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;         thisInnerBlockQ1InInnerBlockQ2;</div>
<div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;    <span class="keywordtype">int</span> outerBitQ1, outerBitQ2;</div>
<div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160; </div>
<div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> thisTask;</div>
<div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numTasks=qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>&gt;&gt;2;</div>
<div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160; </div>
<div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;    <span class="comment">// set dimensions</span></div>
<div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;    sizeInnerHalfBlockQ1 = 1LL &lt;&lt; targetQubit;</div>
<div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;    sizeInnerHalfBlockQ2 = 1LL &lt;&lt; qubit2;</div>
<div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;    sizeInnerQuarterBlockQ2 = sizeInnerHalfBlockQ2 &gt;&gt; 1;</div>
<div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;    sizeInnerBlockQ2 = sizeInnerHalfBlockQ2 &lt;&lt; 1;</div>
<div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;    sizeInnerBlockQ1 = 2LL * sizeInnerHalfBlockQ1;</div>
<div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;    sizeOuterColumn = 1LL &lt;&lt; qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>;</div>
<div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;    sizeOuterQuarterColumn = sizeOuterColumn &gt;&gt; 2;</div>
<div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160; </div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;<span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;<span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;<span class="preprocessor">    default  (none) \</span></div>
<div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;<span class="preprocessor">    shared   (sizeInnerBlockQ1,sizeInnerHalfBlockQ1,sizeInnerQuarterBlockQ2,sizeInnerHalfBlockQ2,sizeInnerBlockQ2, \</span></div>
<div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;<span class="preprocessor">                sizeOuterColumn,sizeOuterQuarterColumn,qureg,numTasks,targetQubit,qubit2) \</span></div>
<div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;<span class="preprocessor">    private  (thisTask,thisInnerBlockQ2,thisOuterColumn,thisIndex,thisIndexInOuterColumn, \</span></div>
<div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;<span class="preprocessor">                thisIndexInInnerBlockQ1,thisIndexInInnerBlockQ2,thisInnerBlockQ1InInnerBlockQ2,outerBitQ1,outerBitQ2) </span></div>
<div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;<span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;    {</div>
<div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;<span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;<span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;<span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;        <span class="comment">// thisTask iterates over half the elements in this process&#39; chunk of the density matrix</span></div>
<div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;        <span class="comment">// treat this as iterating over all columns, then iterating over half the values</span></div>
<div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;        <span class="comment">// within one column.</span></div>
<div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160;        <span class="comment">// If this function has been called, this process&#39; chunk contains half an </span></div>
<div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;        <span class="comment">// outer block or less</span></div>
<div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160;        <span class="keywordflow">for</span> (thisTask=0; thisTask&lt;numTasks; thisTask++) {</div>
<div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;            <span class="comment">// we want to process all columns in the density matrix,</span></div>
<div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160;            <span class="comment">// updating the values for half of each column (one half of each inner block)</span></div>
<div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;            thisOuterColumn = thisTask / sizeOuterQuarterColumn;</div>
<div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;            <span class="comment">// thisTask % sizeOuterQuarterColumn</span></div>
<div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160;            thisIndexInOuterColumn = thisTask&amp;(sizeOuterQuarterColumn-1);</div>
<div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;            thisInnerBlockQ2 = thisIndexInOuterColumn / sizeInnerQuarterBlockQ2;</div>
<div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;            <span class="comment">// thisTask % sizeInnerQuarterBlockQ2;</span></div>
<div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;            thisIndexInInnerBlockQ2 = thisTask&amp;(sizeInnerQuarterBlockQ2-1);</div>
<div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;            thisInnerBlockQ1InInnerBlockQ2 = thisIndexInInnerBlockQ2 / sizeInnerHalfBlockQ1;</div>
<div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160;            <span class="comment">// thisTask % sizeInnerHalfBlockQ1;</span></div>
<div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160;            thisIndexInInnerBlockQ1 = thisTask&amp;(sizeInnerHalfBlockQ1-1);</div>
<div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160; </div>
<div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;            <span class="comment">// get index in state vector corresponding to upper inner block</span></div>
<div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;            thisIndex = thisOuterColumn*sizeOuterColumn + thisInnerBlockQ2*sizeInnerBlockQ2</div>
<div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;                + thisInnerBlockQ1InInnerBlockQ2*sizeInnerBlockQ1 + thisIndexInInnerBlockQ1;</div>
<div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160; </div>
<div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160;            <span class="comment">// check if we are in the upper or lower half of an outer block for Q1</span></div>
<div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;            outerBitQ1 = <a class="code" href="QuEST__gpu_8cu.html#aec1852e1a8e70d3690919ce8ab551ba0">extractBit</a>(targetQubit, (thisIndex+qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>*qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>)&gt;&gt;qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160;            <span class="comment">// if we are in the lower half of an outer block, shift to be in the lower half</span></div>
<div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160;            <span class="comment">// of the inner block as well (we want to dephase |0&gt;&lt;0| and |1&gt;&lt;1| only)</span></div>
<div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;            thisIndex += outerBitQ1*(sizeInnerHalfBlockQ1);</div>
<div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160; </div>
<div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160;            <span class="comment">// check if we are in the upper or lower half of an outer block for Q2</span></div>
<div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;            outerBitQ2 = <a class="code" href="QuEST__gpu_8cu.html#aec1852e1a8e70d3690919ce8ab551ba0">extractBit</a>(qubit2, (thisIndex+qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>*qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>)&gt;&gt;qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160;            <span class="comment">// if we are in the lower half of an outer block, shift to be in the lower half</span></div>
<div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160;            <span class="comment">// of the inner block as well (we want to dephase |0&gt;&lt;0| and |1&gt;&lt;1| only)</span></div>
<div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;            thisIndex += outerBitQ2*(sizeInnerQuarterBlockQ2&lt;&lt;1);</div>
<div class="line"><a name="l00697"></a><span class="lineno">  697</span>&#160; </div>
<div class="line"><a name="l00698"></a><span class="lineno">  698</span>&#160;            <span class="comment">// NOTE: at this point thisIndex should be the index of the element we want to </span></div>
<div class="line"><a name="l00699"></a><span class="lineno">  699</span>&#160;            <span class="comment">// dephase in the chunk of the state vector on this process, in the </span></div>
<div class="line"><a name="l00700"></a><span class="lineno">  700</span>&#160;            <span class="comment">// density matrix representation. </span></div>
<div class="line"><a name="l00701"></a><span class="lineno">  701</span>&#160;            <span class="comment">// thisTask is the index of the pair element in pairStateVec</span></div>
<div class="line"><a name="l00702"></a><span class="lineno">  702</span>&#160; </div>
<div class="line"><a name="l00703"></a><span class="lineno">  703</span>&#160;            <span class="comment">// state[thisIndex] = (1-depolLevel)*state[thisIndex] + depolLevel*(state[thisIndex]</span></div>
<div class="line"><a name="l00704"></a><span class="lineno">  704</span>&#160;            <span class="comment">//      + pair[thisTask])/2</span></div>
<div class="line"><a name="l00705"></a><span class="lineno">  705</span>&#160;            qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[thisTask+numTasks*2] = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real[thisIndex];</div>
<div class="line"><a name="l00706"></a><span class="lineno">  706</span>&#160;            qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[thisTask+numTasks*2] = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag[thisIndex];</div>
<div class="line"><a name="l00707"></a><span class="lineno">  707</span>&#160;        }</div>
<div class="line"><a name="l00708"></a><span class="lineno">  708</span>&#160;    }</div>
<div class="line"><a name="l00709"></a><span class="lineno">  709</span>&#160;}</div>
<div class="line"><a name="l00710"></a><span class="lineno">  710</span>&#160; </div>
<div class="line"><a name="l00711"></a><span class="lineno">  711</span>&#160; </div>
<div class="line"><a name="l00712"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a398b60c4cb4fa2cf2ffc126de6c08da0">  712</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a398b60c4cb4fa2cf2ffc126de6c08da0">densmatr_mixDepolarising</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit, <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> depolLevel) {</div>
<div class="line"><a name="l00713"></a><span class="lineno">  713</span>&#160;    <span class="keywordflow">if</span> (depolLevel == 0)</div>
<div class="line"><a name="l00714"></a><span class="lineno">  714</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00715"></a><span class="lineno">  715</span>&#160;    </div>
<div class="line"><a name="l00716"></a><span class="lineno">  716</span>&#160;    <span class="keywordtype">int</span> rankIsUpper; <span class="comment">// rank is in the upper half of an outer block</span></div>
<div class="line"><a name="l00717"></a><span class="lineno">  717</span>&#160;    <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00718"></a><span class="lineno">  718</span>&#160; </div>
<div class="line"><a name="l00719"></a><span class="lineno">  719</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015">densityMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00720"></a><span class="lineno">  720</span>&#160;            qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, targetQubit);</div>
<div class="line"><a name="l00721"></a><span class="lineno">  721</span>&#160; </div>
<div class="line"><a name="l00722"></a><span class="lineno">  722</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00723"></a><span class="lineno">  723</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#ab750fb47da2fca9849c678c869e40e69">densmatr_mixDepolarisingLocal</a>(qureg, targetQubit, depolLevel);</div>
<div class="line"><a name="l00724"></a><span class="lineno">  724</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00725"></a><span class="lineno">  725</span>&#160;        <span class="comment">// pack data to send to my pair process into the first half of pairStateVec</span></div>
<div class="line"><a name="l00726"></a><span class="lineno">  726</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#a0eb14d48920ea469b0904ae63b47b589">compressPairVectorForSingleQubitDepolarise</a>(qureg, targetQubit);</div>
<div class="line"><a name="l00727"></a><span class="lineno">  727</span>&#160; </div>
<div class="line"><a name="l00728"></a><span class="lineno">  728</span>&#160;        rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit, </div>
<div class="line"><a name="l00729"></a><span class="lineno">  729</span>&#160;                qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00730"></a><span class="lineno">  730</span>&#160;        pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00731"></a><span class="lineno">  731</span>&#160;                targetQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00732"></a><span class="lineno">  732</span>&#160; </div>
<div class="line"><a name="l00733"></a><span class="lineno">  733</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00734"></a><span class="lineno">  734</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a88670d0e7cebe33f61c1dd98daa338b3">densmatr_mixDepolarisingDistributed</a>(qureg, targetQubit, depolLevel);</div>
<div class="line"><a name="l00735"></a><span class="lineno">  735</span>&#160;    }</div>
<div class="line"><a name="l00736"></a><span class="lineno">  736</span>&#160; </div>
<div class="line"><a name="l00737"></a><span class="lineno">  737</span>&#160;}</div>
<div class="line"><a name="l00738"></a><span class="lineno">  738</span>&#160; </div>
<div class="line"><a name="l00739"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ac501fe7b9d331be48359ce1546348f97">  739</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ac501fe7b9d331be48359ce1546348f97">densmatr_mixDamping</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit, <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> damping) {</div>
<div class="line"><a name="l00740"></a><span class="lineno">  740</span>&#160;    <span class="keywordflow">if</span> (damping == 0)</div>
<div class="line"><a name="l00741"></a><span class="lineno">  741</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00742"></a><span class="lineno">  742</span>&#160;    </div>
<div class="line"><a name="l00743"></a><span class="lineno">  743</span>&#160;    <span class="keywordtype">int</span> rankIsUpper; <span class="comment">// rank is in the upper half of an outer block</span></div>
<div class="line"><a name="l00744"></a><span class="lineno">  744</span>&#160;    <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00745"></a><span class="lineno">  745</span>&#160; </div>
<div class="line"><a name="l00746"></a><span class="lineno">  746</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015">densityMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00747"></a><span class="lineno">  747</span>&#160;            qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, targetQubit);</div>
<div class="line"><a name="l00748"></a><span class="lineno">  748</span>&#160; </div>
<div class="line"><a name="l00749"></a><span class="lineno">  749</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00750"></a><span class="lineno">  750</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#ab124a3a9956046bf9c0e1e3ae9171f42">densmatr_mixDampingLocal</a>(qureg, targetQubit, damping);</div>
<div class="line"><a name="l00751"></a><span class="lineno">  751</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00752"></a><span class="lineno">  752</span>&#160;        <span class="comment">// pack data to send to my pair process into the first half of pairStateVec</span></div>
<div class="line"><a name="l00753"></a><span class="lineno">  753</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#a0eb14d48920ea469b0904ae63b47b589">compressPairVectorForSingleQubitDepolarise</a>(qureg, targetQubit);</div>
<div class="line"><a name="l00754"></a><span class="lineno">  754</span>&#160; </div>
<div class="line"><a name="l00755"></a><span class="lineno">  755</span>&#160;        rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit, </div>
<div class="line"><a name="l00756"></a><span class="lineno">  756</span>&#160;                qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00757"></a><span class="lineno">  757</span>&#160;        pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00758"></a><span class="lineno">  758</span>&#160;                targetQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00759"></a><span class="lineno">  759</span>&#160; </div>
<div class="line"><a name="l00760"></a><span class="lineno">  760</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00761"></a><span class="lineno">  761</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a8d9c19a3424f0ad89bfbfd920d65301d">densmatr_mixDampingDistributed</a>(qureg, targetQubit, damping);</div>
<div class="line"><a name="l00762"></a><span class="lineno">  762</span>&#160;    }</div>
<div class="line"><a name="l00763"></a><span class="lineno">  763</span>&#160; </div>
<div class="line"><a name="l00764"></a><span class="lineno">  764</span>&#160;}</div>
<div class="line"><a name="l00765"></a><span class="lineno">  765</span>&#160; </div>
<div class="line"><a name="l00766"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a43afa97e300b87bce7f3eb1213eb05f6">  766</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a43afa97e300b87bce7f3eb1213eb05f6">densmatr_mixTwoQubitDepolarising</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> qubit1, <span class="keywordtype">int</span> qubit2, <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> depolLevel){</div>
<div class="line"><a name="l00767"></a><span class="lineno">  767</span>&#160;    <span class="keywordflow">if</span> (depolLevel == 0)</div>
<div class="line"><a name="l00768"></a><span class="lineno">  768</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00769"></a><span class="lineno">  769</span>&#160;    <span class="keywordtype">int</span> rankIsUpperBiggerQubit, rankIsUpperSmallerQubit;</div>
<div class="line"><a name="l00770"></a><span class="lineno">  770</span>&#160;    <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00771"></a><span class="lineno">  771</span>&#160;    <span class="keywordtype">int</span> biggerQubit, smallerQubit;</div>
<div class="line"><a name="l00772"></a><span class="lineno">  772</span>&#160; </div>
<div class="line"><a name="l00773"></a><span class="lineno">  773</span>&#160;    <a class="code" href="QuEST__internal_8h.html#a623e577b7230f3c8dc202be6185b4289">densmatr_mixTwoQubitDephasing</a>(qureg, qubit1, qubit2, depolLevel);</div>
<div class="line"><a name="l00774"></a><span class="lineno">  774</span>&#160;    </div>
<div class="line"><a name="l00775"></a><span class="lineno">  775</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> eta = 2/depolLevel;</div>
<div class="line"><a name="l00776"></a><span class="lineno">  776</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> delta = eta - 1 - sqrt( (eta-1)*(eta-1) - 1 ); </div>
<div class="line"><a name="l00777"></a><span class="lineno">  777</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> gamma = 1+delta;</div>
<div class="line"><a name="l00778"></a><span class="lineno">  778</span>&#160;    gamma = 1/(gamma*gamma*gamma);</div>
<div class="line"><a name="l00779"></a><span class="lineno">  779</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> GAMMA_PARTS_1_OR_2 = 1.0;</div>
<div class="line"><a name="l00780"></a><span class="lineno">  780</span>&#160;    <span class="comment">// TODO -- test delta too small</span></div>
<div class="line"><a name="l00781"></a><span class="lineno">  781</span>&#160;    <span class="comment">/*   </span></div>
<div class="line"><a name="l00782"></a><span class="lineno">  782</span>&#160;<span class="comment">    if (fabs(4*delta*(1+delta)*gamma-depolLevel)&gt;1e-5){</span></div>
<div class="line"><a name="l00783"></a><span class="lineno">  783</span>&#160;<span class="comment">        printf(&quot;Numerical error in delta; for small error rates try Taylor expansion.\n&quot;);</span></div>
<div class="line"><a name="l00784"></a><span class="lineno">  784</span>&#160;<span class="comment">        exit(1);</span></div>
<div class="line"><a name="l00785"></a><span class="lineno">  785</span>&#160;<span class="comment">    }</span></div>
<div class="line"><a name="l00786"></a><span class="lineno">  786</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00787"></a><span class="lineno">  787</span>&#160;    </div>
<div class="line"><a name="l00788"></a><span class="lineno">  788</span>&#160;    biggerQubit = qubit1 &gt; qubit2 ? qubit1 : qubit2;</div>
<div class="line"><a name="l00789"></a><span class="lineno">  789</span>&#160;    smallerQubit = qubit1 &lt; qubit2 ? qubit1 : qubit2;</div>
<div class="line"><a name="l00790"></a><span class="lineno">  790</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnlyBigQubit, useLocalDataOnlySmallQubit;</div>
<div class="line"><a name="l00791"></a><span class="lineno">  791</span>&#160; </div>
<div class="line"><a name="l00792"></a><span class="lineno">  792</span>&#160;    useLocalDataOnlyBigQubit = <a class="code" href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015">densityMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00793"></a><span class="lineno">  793</span>&#160;        qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, biggerQubit);</div>
<div class="line"><a name="l00794"></a><span class="lineno">  794</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnlyBigQubit){</div>
<div class="line"><a name="l00795"></a><span class="lineno">  795</span>&#160;        <span class="comment">// does parts 1, 2 and 3 locally in one go</span></div>
<div class="line"><a name="l00796"></a><span class="lineno">  796</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a3510f01d4d15dcc545564eb84c668cad">densmatr_mixTwoQubitDepolarisingLocal</a>(qureg, qubit1, qubit2, delta, gamma);</div>
<div class="line"><a name="l00797"></a><span class="lineno">  797</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00798"></a><span class="lineno">  798</span>&#160;        useLocalDataOnlySmallQubit = <a class="code" href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015">densityMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00799"></a><span class="lineno">  799</span>&#160;            qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, smallerQubit);</div>
<div class="line"><a name="l00800"></a><span class="lineno">  800</span>&#160;        <span class="keywordflow">if</span> (useLocalDataOnlySmallQubit){</div>
<div class="line"><a name="l00801"></a><span class="lineno">  801</span>&#160;            <span class="comment">// do part 1 locally</span></div>
<div class="line"><a name="l00802"></a><span class="lineno">  802</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#ae90f82418e0aa67218d733dbbc681998">densmatr_mixTwoQubitDepolarisingLocalPart1</a>(qureg, smallerQubit, biggerQubit, delta);</div>
<div class="line"><a name="l00803"></a><span class="lineno">  803</span>&#160;            </div>
<div class="line"><a name="l00804"></a><span class="lineno">  804</span>&#160;            <span class="comment">// do parts 2 and 3 distributed (if part 2 is distributed part 3 is also distributed)</span></div>
<div class="line"><a name="l00805"></a><span class="lineno">  805</span>&#160;            <span class="comment">// part 2 will be distributed and the value of the small qubit won&#39;t matter</span></div>
<div class="line"><a name="l00806"></a><span class="lineno">  806</span>&#160;            <a class="code" href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00807"></a><span class="lineno">  807</span>&#160;            rankIsUpperBiggerQubit = <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, biggerQubit, </div>
<div class="line"><a name="l00808"></a><span class="lineno">  808</span>&#160;                    qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00809"></a><span class="lineno">  809</span>&#160;            pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(rankIsUpperBiggerQubit, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00810"></a><span class="lineno">  810</span>&#160;                    biggerQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00811"></a><span class="lineno">  811</span>&#160; </div>
<div class="line"><a name="l00812"></a><span class="lineno">  812</span>&#160;            <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00813"></a><span class="lineno">  813</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a2f76ec8f08e19bb8e1254aafb10e160e">densmatr_mixTwoQubitDepolarisingDistributed</a>(qureg, smallerQubit, biggerQubit, delta, GAMMA_PARTS_1_OR_2);</div>
<div class="line"><a name="l00814"></a><span class="lineno">  814</span>&#160;            </div>
<div class="line"><a name="l00815"></a><span class="lineno">  815</span>&#160;            <span class="comment">// part 3 will be distributed but involve rearranging for the smaller qubit</span></div>
<div class="line"><a name="l00816"></a><span class="lineno">  816</span>&#160;            <a class="code" href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00817"></a><span class="lineno">  817</span>&#160;            rankIsUpperBiggerQubit = <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, biggerQubit, </div>
<div class="line"><a name="l00818"></a><span class="lineno">  818</span>&#160;                    qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00819"></a><span class="lineno">  819</span>&#160;            pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(rankIsUpperBiggerQubit, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00820"></a><span class="lineno">  820</span>&#160;                    biggerQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00821"></a><span class="lineno">  821</span>&#160; </div>
<div class="line"><a name="l00822"></a><span class="lineno">  822</span>&#160;            <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00823"></a><span class="lineno">  823</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#acabdfbd3184d3ab3bded61e24142b800">densmatr_mixTwoQubitDepolarisingQ1LocalQ2DistributedPart3</a>(qureg, smallerQubit, biggerQubit, delta, gamma);</div>
<div class="line"><a name="l00824"></a><span class="lineno">  824</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00825"></a><span class="lineno">  825</span>&#160;            <span class="comment">// do part 1, 2 and 3 distributed</span></div>
<div class="line"><a name="l00826"></a><span class="lineno">  826</span>&#160;            <span class="comment">// part 1</span></div>
<div class="line"><a name="l00827"></a><span class="lineno">  827</span>&#160;            <a class="code" href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00828"></a><span class="lineno">  828</span>&#160;            rankIsUpperSmallerQubit = <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, smallerQubit, </div>
<div class="line"><a name="l00829"></a><span class="lineno">  829</span>&#160;                    qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00830"></a><span class="lineno">  830</span>&#160;            pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(rankIsUpperSmallerQubit, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00831"></a><span class="lineno">  831</span>&#160;                    smallerQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00832"></a><span class="lineno">  832</span>&#160; </div>
<div class="line"><a name="l00833"></a><span class="lineno">  833</span>&#160;            <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00834"></a><span class="lineno">  834</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a2f76ec8f08e19bb8e1254aafb10e160e">densmatr_mixTwoQubitDepolarisingDistributed</a>(qureg, smallerQubit, biggerQubit, delta, GAMMA_PARTS_1_OR_2);</div>
<div class="line"><a name="l00835"></a><span class="lineno">  835</span>&#160; </div>
<div class="line"><a name="l00836"></a><span class="lineno">  836</span>&#160;            <span class="comment">// part 2</span></div>
<div class="line"><a name="l00837"></a><span class="lineno">  837</span>&#160;            <a class="code" href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00838"></a><span class="lineno">  838</span>&#160;            rankIsUpperBiggerQubit = <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, biggerQubit, </div>
<div class="line"><a name="l00839"></a><span class="lineno">  839</span>&#160;                    qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00840"></a><span class="lineno">  840</span>&#160;            pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(rankIsUpperBiggerQubit, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00841"></a><span class="lineno">  841</span>&#160;                    biggerQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00842"></a><span class="lineno">  842</span>&#160; </div>
<div class="line"><a name="l00843"></a><span class="lineno">  843</span>&#160;            <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00844"></a><span class="lineno">  844</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a2f76ec8f08e19bb8e1254aafb10e160e">densmatr_mixTwoQubitDepolarisingDistributed</a>(qureg, smallerQubit, biggerQubit, delta, GAMMA_PARTS_1_OR_2);</div>
<div class="line"><a name="l00845"></a><span class="lineno">  845</span>&#160; </div>
<div class="line"><a name="l00846"></a><span class="lineno">  846</span>&#160;            <span class="comment">// part 3</span></div>
<div class="line"><a name="l00847"></a><span class="lineno">  847</span>&#160;            <a class="code" href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00848"></a><span class="lineno">  848</span>&#160;            pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ab1ec7f241b68b079c8e316d190af49ce">getChunkOuterBlockPairIdForPart3</a>(rankIsUpperSmallerQubit, rankIsUpperBiggerQubit, </div>
<div class="line"><a name="l00849"></a><span class="lineno">  849</span>&#160;                    qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, smallerQubit, biggerQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00850"></a><span class="lineno">  850</span>&#160;            <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00851"></a><span class="lineno">  851</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a2f76ec8f08e19bb8e1254aafb10e160e">densmatr_mixTwoQubitDepolarisingDistributed</a>(qureg, smallerQubit, biggerQubit, delta, gamma);</div>
<div class="line"><a name="l00852"></a><span class="lineno">  852</span>&#160; </div>
<div class="line"><a name="l00853"></a><span class="lineno">  853</span>&#160;        }</div>
<div class="line"><a name="l00854"></a><span class="lineno">  854</span>&#160;    }</div>
<div class="line"><a name="l00855"></a><span class="lineno">  855</span>&#160; </div>
<div class="line"><a name="l00856"></a><span class="lineno">  856</span>&#160;}</div>
<div class="line"><a name="l00857"></a><span class="lineno">  857</span>&#160; </div>
<div class="line"><a name="l00858"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#aec63559e8b9ab0e17efe18d64d2ceca6">  858</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#aec63559e8b9ab0e17efe18d64d2ceca6">statevec_compactUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit, <a class="code" href="structComplex.html">Complex</a> alpha, <a class="code" href="structComplex.html">Complex</a> beta)</div>
<div class="line"><a name="l00859"></a><span class="lineno">  859</span>&#160;{</div>
<div class="line"><a name="l00860"></a><span class="lineno">  860</span>&#160;    <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l00861"></a><span class="lineno">  861</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00862"></a><span class="lineno">  862</span>&#160;    <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l00863"></a><span class="lineno">  863</span>&#160; </div>
<div class="line"><a name="l00864"></a><span class="lineno">  864</span>&#160;    <span class="comment">// rank&#39;s chunk is in upper half of block </span></div>
<div class="line"><a name="l00865"></a><span class="lineno">  865</span>&#160;    <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l00866"></a><span class="lineno">  866</span>&#160;    <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00867"></a><span class="lineno">  867</span>&#160; </div>
<div class="line"><a name="l00868"></a><span class="lineno">  868</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00869"></a><span class="lineno">  869</span>&#160;        <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l00870"></a><span class="lineno">  870</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a5ddfdb22e4704b680d67d08d9e80835b">statevec_compactUnitaryLocal</a>(qureg, targetQubit, alpha, beta);</div>
<div class="line"><a name="l00871"></a><span class="lineno">  871</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00872"></a><span class="lineno">  872</span>&#160;        <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l00873"></a><span class="lineno">  873</span>&#160;        rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00874"></a><span class="lineno">  874</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872">getRotAngle</a>(rankIsUpper, &amp;rot1, &amp;rot2, alpha, beta);</div>
<div class="line"><a name="l00875"></a><span class="lineno">  875</span>&#160;        pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00876"></a><span class="lineno">  876</span>&#160;        <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l00877"></a><span class="lineno">  877</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l00878"></a><span class="lineno">  878</span>&#160; </div>
<div class="line"><a name="l00879"></a><span class="lineno">  879</span>&#160;        <span class="comment">// this rank&#39;s values are either in the upper of lower half of the block. </span></div>
<div class="line"><a name="l00880"></a><span class="lineno">  880</span>&#160;        <span class="comment">// send values to compactUnitaryDistributed in the correct order</span></div>
<div class="line"><a name="l00881"></a><span class="lineno">  881</span>&#160;        <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l00882"></a><span class="lineno">  882</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a0a7a35628b1c1eb47336deb9afda5b68">statevec_compactUnitaryDistributed</a>(qureg,rot1,rot2,</div>
<div class="line"><a name="l00883"></a><span class="lineno">  883</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00884"></a><span class="lineno">  884</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00885"></a><span class="lineno">  885</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00886"></a><span class="lineno">  886</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00887"></a><span class="lineno">  887</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a0a7a35628b1c1eb47336deb9afda5b68">statevec_compactUnitaryDistributed</a>(qureg,rot1,rot2,</div>
<div class="line"><a name="l00888"></a><span class="lineno">  888</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00889"></a><span class="lineno">  889</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00890"></a><span class="lineno">  890</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00891"></a><span class="lineno">  891</span>&#160;        }</div>
<div class="line"><a name="l00892"></a><span class="lineno">  892</span>&#160;    }</div>
<div class="line"><a name="l00893"></a><span class="lineno">  893</span>&#160;}</div>
<div class="line"><a name="l00894"></a><span class="lineno">  894</span>&#160; </div>
<div class="line"><a name="l00895"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ac3735bd959600e57b2ee3a105666cddf">  895</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ac3735bd959600e57b2ee3a105666cddf">statevec_unitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit, <a class="code" href="structComplexMatrix2.html">ComplexMatrix2</a> u)</div>
<div class="line"><a name="l00896"></a><span class="lineno">  896</span>&#160;{</div>
<div class="line"><a name="l00897"></a><span class="lineno">  897</span>&#160;    <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l00898"></a><span class="lineno">  898</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00899"></a><span class="lineno">  899</span>&#160;    <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l00900"></a><span class="lineno">  900</span>&#160; </div>
<div class="line"><a name="l00901"></a><span class="lineno">  901</span>&#160;    <span class="comment">// rank&#39;s chunk is in upper half of block </span></div>
<div class="line"><a name="l00902"></a><span class="lineno">  902</span>&#160;    <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l00903"></a><span class="lineno">  903</span>&#160;    <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00904"></a><span class="lineno">  904</span>&#160; </div>
<div class="line"><a name="l00905"></a><span class="lineno">  905</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00906"></a><span class="lineno">  906</span>&#160;        <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l00907"></a><span class="lineno">  907</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#aafc398f8f479fcc066a2dea700235635">statevec_unitaryLocal</a>(qureg, targetQubit, u);</div>
<div class="line"><a name="l00908"></a><span class="lineno">  908</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00909"></a><span class="lineno">  909</span>&#160;        <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l00910"></a><span class="lineno">  910</span>&#160;        rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00911"></a><span class="lineno">  911</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17">getRotAngleFromUnitaryMatrix</a>(rankIsUpper, &amp;rot1, &amp;rot2, u);</div>
<div class="line"><a name="l00912"></a><span class="lineno">  912</span>&#160;        pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00913"></a><span class="lineno">  913</span>&#160;        <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l00914"></a><span class="lineno">  914</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l00915"></a><span class="lineno">  915</span>&#160; </div>
<div class="line"><a name="l00916"></a><span class="lineno">  916</span>&#160;        <span class="comment">// this rank&#39;s values are either in the upper of lower half of the block. </span></div>
<div class="line"><a name="l00917"></a><span class="lineno">  917</span>&#160;        <span class="comment">// send values to compactUnitaryDistributed in the correct order</span></div>
<div class="line"><a name="l00918"></a><span class="lineno">  918</span>&#160;        <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l00919"></a><span class="lineno">  919</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a0ce2c2fd54df25495e99dc5b95bed4b2">statevec_unitaryDistributed</a>(qureg,rot1,rot2,</div>
<div class="line"><a name="l00920"></a><span class="lineno">  920</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00921"></a><span class="lineno">  921</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00922"></a><span class="lineno">  922</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00923"></a><span class="lineno">  923</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00924"></a><span class="lineno">  924</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a0ce2c2fd54df25495e99dc5b95bed4b2">statevec_unitaryDistributed</a>(qureg,rot1,rot2,</div>
<div class="line"><a name="l00925"></a><span class="lineno">  925</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00926"></a><span class="lineno">  926</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00927"></a><span class="lineno">  927</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00928"></a><span class="lineno">  928</span>&#160;        }</div>
<div class="line"><a name="l00929"></a><span class="lineno">  929</span>&#160;    }</div>
<div class="line"><a name="l00930"></a><span class="lineno">  930</span>&#160; </div>
<div class="line"><a name="l00931"></a><span class="lineno">  931</span>&#160; </div>
<div class="line"><a name="l00932"></a><span class="lineno">  932</span>&#160;}</div>
<div class="line"><a name="l00933"></a><span class="lineno">  933</span>&#160; </div>
<div class="line"><a name="l00934"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a1275d604674224d87a173fb5bac78835">  934</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a1275d604674224d87a173fb5bac78835">statevec_controlledCompactUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> controlQubit, <span class="keywordtype">int</span> targetQubit, <a class="code" href="structComplex.html">Complex</a> alpha, <a class="code" href="structComplex.html">Complex</a> beta)</div>
<div class="line"><a name="l00935"></a><span class="lineno">  935</span>&#160;{</div>
<div class="line"><a name="l00936"></a><span class="lineno">  936</span>&#160;    <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l00937"></a><span class="lineno">  937</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00938"></a><span class="lineno">  938</span>&#160;    <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l00939"></a><span class="lineno">  939</span>&#160; </div>
<div class="line"><a name="l00940"></a><span class="lineno">  940</span>&#160;    <span class="comment">// rank&#39;s chunk is in upper half of block </span></div>
<div class="line"><a name="l00941"></a><span class="lineno">  941</span>&#160;    <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l00942"></a><span class="lineno">  942</span>&#160;    <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00943"></a><span class="lineno">  943</span>&#160; </div>
<div class="line"><a name="l00944"></a><span class="lineno">  944</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00945"></a><span class="lineno">  945</span>&#160;        <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l00946"></a><span class="lineno">  946</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a215e2d6f88dbecc0b408b3573b5e144f">statevec_controlledCompactUnitaryLocal</a>(qureg, controlQubit, targetQubit, alpha, beta);</div>
<div class="line"><a name="l00947"></a><span class="lineno">  947</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00948"></a><span class="lineno">  948</span>&#160;        <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l00949"></a><span class="lineno">  949</span>&#160;        rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00950"></a><span class="lineno">  950</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872">getRotAngle</a>(rankIsUpper, &amp;rot1, &amp;rot2, alpha, beta);</div>
<div class="line"><a name="l00951"></a><span class="lineno">  951</span>&#160;        pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00952"></a><span class="lineno">  952</span>&#160;        <span class="comment">//printf(&quot;%d rank has pair rank: %d\n&quot;, qureg.rank, pairRank);</span></div>
<div class="line"><a name="l00953"></a><span class="lineno">  953</span>&#160;        <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l00954"></a><span class="lineno">  954</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l00955"></a><span class="lineno">  955</span>&#160; </div>
<div class="line"><a name="l00956"></a><span class="lineno">  956</span>&#160;        <span class="comment">// this rank&#39;s values are either in the upper of lower half of the block. send values to controlledCompactUnitaryDistributed</span></div>
<div class="line"><a name="l00957"></a><span class="lineno">  957</span>&#160;        <span class="comment">// in the correct order</span></div>
<div class="line"><a name="l00958"></a><span class="lineno">  958</span>&#160;        <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l00959"></a><span class="lineno">  959</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a071baf8b6951d2a7d6529394b6f39364">statevec_controlledCompactUnitaryDistributed</a>(qureg,controlQubit,rot1,rot2,</div>
<div class="line"><a name="l00960"></a><span class="lineno">  960</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00961"></a><span class="lineno">  961</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00962"></a><span class="lineno">  962</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00963"></a><span class="lineno">  963</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00964"></a><span class="lineno">  964</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a071baf8b6951d2a7d6529394b6f39364">statevec_controlledCompactUnitaryDistributed</a>(qureg,controlQubit,rot1,rot2,</div>
<div class="line"><a name="l00965"></a><span class="lineno">  965</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00966"></a><span class="lineno">  966</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00967"></a><span class="lineno">  967</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00968"></a><span class="lineno">  968</span>&#160;        }</div>
<div class="line"><a name="l00969"></a><span class="lineno">  969</span>&#160;    }</div>
<div class="line"><a name="l00970"></a><span class="lineno">  970</span>&#160;}</div>
<div class="line"><a name="l00971"></a><span class="lineno">  971</span>&#160; </div>
<div class="line"><a name="l00972"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#add9ca9956cdd81ed5d0b0f66168c04a3">  972</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#add9ca9956cdd81ed5d0b0f66168c04a3">statevec_controlledUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> controlQubit, <span class="keywordtype">int</span> targetQubit, </div>
<div class="line"><a name="l00973"></a><span class="lineno">  973</span>&#160;        <a class="code" href="structComplexMatrix2.html">ComplexMatrix2</a> u)</div>
<div class="line"><a name="l00974"></a><span class="lineno">  974</span>&#160;{</div>
<div class="line"><a name="l00975"></a><span class="lineno">  975</span>&#160;    <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l00976"></a><span class="lineno">  976</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00977"></a><span class="lineno">  977</span>&#160;    <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l00978"></a><span class="lineno">  978</span>&#160; </div>
<div class="line"><a name="l00979"></a><span class="lineno">  979</span>&#160;    <span class="comment">// rank&#39;s chunk is in upper half of block </span></div>
<div class="line"><a name="l00980"></a><span class="lineno">  980</span>&#160;    <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l00981"></a><span class="lineno">  981</span>&#160;    <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00982"></a><span class="lineno">  982</span>&#160; </div>
<div class="line"><a name="l00983"></a><span class="lineno">  983</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00984"></a><span class="lineno">  984</span>&#160;        <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l00985"></a><span class="lineno">  985</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a903beb4f5d8753a964ce2dc5f9096a24">statevec_controlledUnitaryLocal</a>(qureg, controlQubit, targetQubit, u);</div>
<div class="line"><a name="l00986"></a><span class="lineno">  986</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00987"></a><span class="lineno">  987</span>&#160;        <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l00988"></a><span class="lineno">  988</span>&#160;        rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00989"></a><span class="lineno">  989</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17">getRotAngleFromUnitaryMatrix</a>(rankIsUpper, &amp;rot1, &amp;rot2, u);</div>
<div class="line"><a name="l00990"></a><span class="lineno">  990</span>&#160;        pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00991"></a><span class="lineno">  991</span>&#160;        <span class="comment">//printf(&quot;%d rank has pair rank: %d\n&quot;, qureg.rank, pairRank);</span></div>
<div class="line"><a name="l00992"></a><span class="lineno">  992</span>&#160;        <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l00993"></a><span class="lineno">  993</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l00994"></a><span class="lineno">  994</span>&#160; </div>
<div class="line"><a name="l00995"></a><span class="lineno">  995</span>&#160;        <span class="comment">// this rank&#39;s values are either in the upper of lower half of the block. send values to controlledUnitaryDistributed</span></div>
<div class="line"><a name="l00996"></a><span class="lineno">  996</span>&#160;        <span class="comment">// in the correct order</span></div>
<div class="line"><a name="l00997"></a><span class="lineno">  997</span>&#160;        <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l00998"></a><span class="lineno">  998</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a57368529b2a7e76fec423cbfe9980b22">statevec_controlledUnitaryDistributed</a>(qureg,controlQubit,rot1,rot2,</div>
<div class="line"><a name="l00999"></a><span class="lineno">  999</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a57368529b2a7e76fec423cbfe9980b22">statevec_controlledUnitaryDistributed</a>(qureg,controlQubit,rot1,rot2,</div>
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>&#160;        }</div>
<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>&#160;    }</div>
<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>&#160;}</div>
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>&#160; </div>
<div class="line"><a name="l01011"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a600bda10463e2078ce746ec28f2d39c9"> 1011</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a600bda10463e2078ce746ec28f2d39c9">statevec_multiControlledUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> ctrlQubitsMask, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> ctrlFlipMask, <span class="keywordtype">int</span> targetQubit, <a class="code" href="structComplexMatrix2.html">ComplexMatrix2</a> u)</div>
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>&#160;{</div>
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>&#160;    <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>&#160;    <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>&#160; </div>
<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>&#160;    <span class="comment">// rank&#39;s chunk is in upper half of block </span></div>
<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>&#160;    <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>&#160;    <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>&#160; </div>
<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>&#160;        <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#ab19f28e68330da68ea3caa2bdef32da9">statevec_multiControlledUnitaryLocal</a>(qureg, targetQubit, ctrlQubitsMask, ctrlFlipMask, u);</div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>&#160;        <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>&#160;        rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17">getRotAngleFromUnitaryMatrix</a>(rankIsUpper, &amp;rot1, &amp;rot2, u);</div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>&#160;        pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>&#160; </div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>&#160;        <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>&#160; </div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>&#160;        <span class="comment">// this rank&#39;s values are either in the upper of lower half of the block. send values to multiControlledUnitaryDistributed</span></div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>&#160;        <span class="comment">// in the correct order</span></div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>&#160;        <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#ab58fe4be895283c2c4eb86ec9af5682e">statevec_multiControlledUnitaryDistributed</a>(qureg,targetQubit,ctrlQubitsMask,ctrlFlipMask,rot1,rot2,</div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#ab58fe4be895283c2c4eb86ec9af5682e">statevec_multiControlledUnitaryDistributed</a>(qureg,targetQubit,ctrlQubitsMask,ctrlFlipMask,rot1,rot2,</div>
<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>&#160;        }</div>
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>&#160;    }</div>
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>&#160;}</div>
<div class="line"><a name="l01048"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a1c82b5e914a8a39c5c7b782dbc16fa76"> 1048</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a1c82b5e914a8a39c5c7b782dbc16fa76">statevec_pauliX</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>&#160;{</div>
<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>&#160;    <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>&#160; </div>
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>&#160;    <span class="comment">// rank&#39;s chunk is in upper half of block </span></div>
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>&#160;    <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>&#160;    <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>&#160; </div>
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>&#160;        <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#aa987d1e0ba97da2ca540194356dd62de">statevec_pauliXLocal</a>(qureg, targetQubit);</div>
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>&#160;        <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>&#160;        rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>&#160;        pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>&#160;        <span class="comment">//printf(&quot;%d rank has pair rank: %d\n&quot;, qureg.rank, pairRank);</span></div>
<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>&#160;        <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>&#160;        <span class="comment">// this rank&#39;s values are either in the upper of lower half of the block. pauliX just replaces</span></div>
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>&#160;        <span class="comment">// this rank&#39;s values with pair values</span></div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a464efbd1d7ca5a7b25c83ada001955c2">statevec_pauliXDistributed</a>(qureg,</div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>&#160;                qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">// in</span></div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>&#160;                qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">// out</span></div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>&#160;    }</div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>&#160;}</div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>&#160; </div>
<div class="line"><a name="l01075"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#abb2eab4af99adcc59be24f4c91c6f6ad"> 1075</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#abb2eab4af99adcc59be24f4c91c6f6ad">statevec_controlledNot</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> controlQubit, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>&#160;{</div>
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>&#160;    <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>&#160;    <span class="keywordtype">int</span> rankIsUpper;    <span class="comment">// rank&#39;s chunk is in upper half of block </span></div>
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>&#160;    <span class="keywordtype">int</span> pairRank;               <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>&#160; </div>
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>&#160;        <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#ace1482ef82b83e7f926634a67b322fc4">statevec_controlledNotLocal</a>(qureg, controlQubit, targetQubit);</div>
<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>&#160;        <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>&#160;        rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>&#160;        pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>&#160;        <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a393da4c4bc582a757ca8406d8501aca0">statevec_controlledNotDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//out</span></div>
<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>&#160;    }</div>
<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>&#160;}</div>
<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>&#160; </div>
<div class="line"><a name="l01097"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a13ecc24b355a5213d745651cde56bd71"> 1097</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a13ecc24b355a5213d745651cde56bd71">statevec_multiControlledMultiQubitNot</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> ctrlMask, <span class="keywordtype">int</span> targMask)</div>
<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>&#160;{   </div>
<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>&#160;    <span class="comment">/* operation is the same regardless of control and target ordering, hence </span></div>
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>&#160;<span class="comment">     * we accept only bitMasks (for convenience of caller, when shifting qubits</span></div>
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>&#160;<span class="comment">     * for density matrices)</span></div>
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>&#160;    </div>
<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>&#160;    <span class="comment">// global index of the first basis state in this node</span></div>
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> firstInd = qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a> * qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>&#160;    </div>
<div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>&#160;    <span class="comment">/* optimisation: if this node doesn&#39;t contain any amplitudes for which {ctrls}={1}</span></div>
<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>&#160;<span class="comment">     * (and hence, neither does the pair node), then these pair nodes have nothing to modify </span></div>
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>&#160;<span class="comment">     * nor any need to communicate, and can halt. No ctrls are contained in the node </span></div>
<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>&#160;<span class="comment">     * if the distance from the first index, to the next index where {ctrls}=1, is </span></div>
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>&#160;<span class="comment">     * greater than the total contained amplitudes. This is a worthwhile optimisation, </span></div>
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>&#160;<span class="comment">     * since although we must still wait for the slowest node, we have potentially reduced </span></div>
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>&#160;<span class="comment">     * the network traffic and might avoid saturation. </span></div>
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>&#160;    <span class="keywordflow">if</span> ((firstInd|ctrlMask) - firstInd &gt;= qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>)</div>
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>&#160;        </div>
<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>&#160;    <span class="comment">/* nodes communicate pairwise, and (ignoring ctrls) swap all their amplitudes with mate.</span></div>
<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>&#160;<span class="comment">     * hence we find |pairState&gt; = X_{targs}|firstStateInNode&gt;, determine which node contains  </span></div>
<div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>&#160;<span class="comment">     * |pairState&gt;, and swap state-vector with it (unless it happens to be this node).</span></div>
<div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>&#160;    </div>
<div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>&#160;    <span class="comment">// global index of the corresponding NOT&#39;d first basis state</span></div>
<div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> pairInd = firstInd ^ targMask;</div>
<div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>&#160;    <span class="keywordtype">int</span> pairRank = pairInd / qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = (pairRank == qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>);</div>
<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>&#160;    </div>
<div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly) {</div>
<div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>&#160;        <span class="comment">// swaps amplitudes locally, setting |a&gt;=X|b&gt;, and |b&gt;=X|a&gt;</span></div>
<div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#ac7d30ce54573c75b35386cd0e284adc5">statevec_multiControlledMultiQubitNotLocal</a>(qureg, ctrlMask, targMask);</div>
<div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>&#160;        <span class="comment">// swaps amplitudes with pair node</span></div>
<div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>&#160;        <span class="comment">//  modifies only |a&gt;=X|b&gt; (pair node handles the converse)</span></div>
<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#ae6f0c9ed9261afbab4712e056a88763d">statevec_multiControlledMultiQubitNotDistributed</a>(</div>
<div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>&#160;            qureg, ctrlMask, targMask,</div>
<div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>&#160;            qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">// in</span></div>
<div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>&#160;            qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>);    <span class="comment">// out</span></div>
<div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>&#160;    }</div>
<div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>&#160;}</div>
<div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>&#160; </div>
<div class="line"><a name="l01142"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#af1cca787f3b0e0c91ffb2495f9ad8d5a"> 1142</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#af1cca787f3b0e0c91ffb2495f9ad8d5a">statevec_pauliY</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>&#160;{       </div>
<div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>&#160;        <span class="keywordtype">int</span> conjFac = 1;</div>
<div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>&#160; </div>
<div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>&#160;    <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>&#160;    <span class="keywordtype">int</span> rankIsUpper;    <span class="comment">// rank&#39;s chunk is in upper half of block </span></div>
<div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>&#160;    <span class="keywordtype">int</span> pairRank;               <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>&#160; </div>
<div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a45b0916c3e121837f214b64f7424e479">statevec_pauliYLocal</a>(qureg, targetQubit, conjFac);</div>
<div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>&#160;        <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>&#160;        rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>&#160;        pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>&#160;        <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>&#160;        <span class="comment">// this rank&#39;s values are either in the upper of lower half of the block</span></div>
<div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a0f562af6cb665a8a7a3f80e9449734d5">statevec_pauliYDistributed</a>(qureg,</div>
<div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>&#160;                qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">// in</span></div>
<div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>&#160;                qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">// out</span></div>
<div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>&#160;                rankIsUpper, conjFac);</div>
<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>&#160;    }</div>
<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>&#160;}</div>
<div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>&#160; </div>
<div class="line"><a name="l01167"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a81fbd2eccd0d0e5a3cece4df2f96cb92"> 1167</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a81fbd2eccd0d0e5a3cece4df2f96cb92">statevec_pauliYConj</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>&#160;{       </div>
<div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>&#160;        <span class="keywordtype">int</span> conjFac = -1;</div>
<div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>&#160; </div>
<div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>&#160;    <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>&#160;    <span class="keywordtype">int</span> rankIsUpper;    <span class="comment">// rank&#39;s chunk is in upper half of block </span></div>
<div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>&#160;    <span class="keywordtype">int</span> pairRank;               <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>&#160; </div>
<div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a45b0916c3e121837f214b64f7424e479">statevec_pauliYLocal</a>(qureg, targetQubit, conjFac);</div>
<div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>&#160;        <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01180"></a><span class="lineno"> 1180</span>&#160;        rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>&#160;        pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>&#160;        <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>&#160;        <span class="comment">// this rank&#39;s values are either in the upper of lower half of the block</span></div>
<div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a0f562af6cb665a8a7a3f80e9449734d5">statevec_pauliYDistributed</a>(qureg,</div>
<div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>&#160;                qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">// in</span></div>
<div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>&#160;                qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">// out</span></div>
<div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>&#160;                rankIsUpper, conjFac);</div>
<div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>&#160;    }</div>
<div class="line"><a name="l01190"></a><span class="lineno"> 1190</span>&#160;}</div>
<div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>&#160; </div>
<div class="line"><a name="l01192"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a4e19ef93d01d7acea32ca646d623aedd"> 1192</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a4e19ef93d01d7acea32ca646d623aedd">statevec_controlledPauliY</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> controlQubit, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>&#160;{</div>
<div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>&#160;        <span class="keywordtype">int</span> conjFac = 1;</div>
<div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>&#160; </div>
<div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>&#160;    <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>&#160;    <span class="keywordtype">int</span> rankIsUpper;    <span class="comment">// rank&#39;s chunk is in upper half of block </span></div>
<div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>&#160;    <span class="keywordtype">int</span> pairRank;               <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>&#160; </div>
<div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>&#160;        <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a06fb16aa4af7c54d36052a14d3ad58a7">statevec_controlledPauliYLocal</a>(qureg, controlQubit, targetQubit, conjFac);</div>
<div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>&#160;        <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>&#160;        rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>&#160;        pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>&#160;        <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>&#160;        <span class="comment">// this rank&#39;s values are either in the upper of lower half of the block</span></div>
<div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>&#160;        <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a790add229738945812ae2048c03d58ec">statevec_controlledPauliYDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>,</div>
<div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>&#160;                                        conjFac); <span class="comment">//out</span></div>
<div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a790add229738945812ae2048c03d58ec">statevec_controlledPauliYDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>,</div>
<div class="line"><a name="l01220"></a><span class="lineno"> 1220</span>&#160;                                        - conjFac); <span class="comment">//out</span></div>
<div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>&#160;        }</div>
<div class="line"><a name="l01222"></a><span class="lineno"> 1222</span>&#160;    }</div>
<div class="line"><a name="l01223"></a><span class="lineno"> 1223</span>&#160;}</div>
<div class="line"><a name="l01224"></a><span class="lineno"> 1224</span>&#160; </div>
<div class="line"><a name="l01225"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a4a2fa262d3f0dba372797b9bd35d9fa5"> 1225</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a4a2fa262d3f0dba372797b9bd35d9fa5">statevec_controlledPauliYConj</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> controlQubit, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01226"></a><span class="lineno"> 1226</span>&#160;{</div>
<div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>&#160;        <span class="keywordtype">int</span> conjFac = -1;</div>
<div class="line"><a name="l01228"></a><span class="lineno"> 1228</span>&#160; </div>
<div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>&#160;    <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01230"></a><span class="lineno"> 1230</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>&#160;    <span class="keywordtype">int</span> rankIsUpper;    <span class="comment">// rank&#39;s chunk is in upper half of block </span></div>
<div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>&#160;    <span class="keywordtype">int</span> pairRank;               <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>&#160; </div>
<div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>&#160;        <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a06fb16aa4af7c54d36052a14d3ad58a7">statevec_controlledPauliYLocal</a>(qureg, controlQubit, targetQubit, conjFac);</div>
<div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>&#160;        <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>&#160;        rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>&#160;        pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>&#160;        <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>&#160;        <span class="comment">// this rank&#39;s values are either in the upper of lower half of the block</span></div>
<div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>&#160;        <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l01245"></a><span class="lineno"> 1245</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a790add229738945812ae2048c03d58ec">statevec_controlledPauliYDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01246"></a><span class="lineno"> 1246</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01247"></a><span class="lineno"> 1247</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>,</div>
<div class="line"><a name="l01248"></a><span class="lineno"> 1248</span>&#160;                                        conjFac); <span class="comment">//out</span></div>
<div class="line"><a name="l01249"></a><span class="lineno"> 1249</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#a790add229738945812ae2048c03d58ec">statevec_controlledPauliYDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01251"></a><span class="lineno"> 1251</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01252"></a><span class="lineno"> 1252</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>,</div>
<div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>&#160;                                        - conjFac); <span class="comment">//out</span></div>
<div class="line"><a name="l01254"></a><span class="lineno"> 1254</span>&#160;        }</div>
<div class="line"><a name="l01255"></a><span class="lineno"> 1255</span>&#160;    }</div>
<div class="line"><a name="l01256"></a><span class="lineno"> 1256</span>&#160;}</div>
<div class="line"><a name="l01257"></a><span class="lineno"> 1257</span>&#160; </div>
<div class="line"><a name="l01258"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#af3fc7bd149c70f083b149050242cd55e"> 1258</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#af3fc7bd149c70f083b149050242cd55e">statevec_hadamard</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>&#160;{</div>
<div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>&#160;    <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01261"></a><span class="lineno"> 1261</span>&#160;    <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>&#160; </div>
<div class="line"><a name="l01263"></a><span class="lineno"> 1263</span>&#160;    <span class="comment">// rank&#39;s chunk is in upper half of block </span></div>
<div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>&#160;    <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l01265"></a><span class="lineno"> 1265</span>&#160;    <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>&#160; </div>
<div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>&#160;    <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01268"></a><span class="lineno"> 1268</span>&#160;        <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#a86dbcc3db99294add9964741e19fbdab">statevec_hadamardLocal</a>(qureg, targetQubit);</div>
<div class="line"><a name="l01270"></a><span class="lineno"> 1270</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01271"></a><span class="lineno"> 1271</span>&#160;        <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>&#160;        rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01273"></a><span class="lineno"> 1273</span>&#160;        pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01274"></a><span class="lineno"> 1274</span>&#160;        <span class="comment">//printf(&quot;%d rank has pair rank: %d\n&quot;, qureg.rank, pairRank);</span></div>
<div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>&#160;        <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01277"></a><span class="lineno"> 1277</span>&#160;        <span class="comment">// this rank&#39;s values are either in the upper of lower half of the block. send values to hadamardDistributed</span></div>
<div class="line"><a name="l01278"></a><span class="lineno"> 1278</span>&#160;        <span class="comment">// in the correct order</span></div>
<div class="line"><a name="l01279"></a><span class="lineno"> 1279</span>&#160;        <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l01280"></a><span class="lineno"> 1280</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#abea6570b95fdfa102511ccd1fcb30685">statevec_hadamardDistributed</a>(qureg,</div>
<div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01282"></a><span class="lineno"> 1282</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, rankIsUpper); <span class="comment">//output</span></div>
<div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>&#160;            <a class="code" href="QuEST__cpu_8c.html#abea6570b95fdfa102511ccd1fcb30685">statevec_hadamardDistributed</a>(qureg,</div>
<div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>&#160;                    qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01287"></a><span class="lineno"> 1287</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>&#160;                    qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, rankIsUpper); <span class="comment">//output</span></div>
<div class="line"><a name="l01289"></a><span class="lineno"> 1289</span>&#160;        }</div>
<div class="line"><a name="l01290"></a><span class="lineno"> 1290</span>&#160;    }</div>
<div class="line"><a name="l01291"></a><span class="lineno"> 1291</span>&#160;}</div>
<div class="line"><a name="l01292"></a><span class="lineno"> 1292</span>&#160; </div>
<div class="line"><a name="l01303"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#af0ea25f00987af4c53f17c9cca62ab41"> 1303</a></span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#af0ea25f00987af4c53f17c9cca62ab41">isChunkToSkipInFindPZero</a>(<span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> measureQubit)</div>
<div class="line"><a name="l01304"></a><span class="lineno"> 1304</span>&#160;{</div>
<div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeHalfBlock = 1LL &lt;&lt; (measureQubit);</div>
<div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>&#160;    <span class="keywordtype">int</span> numChunksToSkip = sizeHalfBlock/chunkSize;</div>
<div class="line"><a name="l01307"></a><span class="lineno"> 1307</span>&#160;    <span class="comment">// calculate probability by summing over numChunksToSkip, then skipping numChunksToSkip, etc</span></div>
<div class="line"><a name="l01308"></a><span class="lineno"> 1308</span>&#160;    <span class="keywordtype">int</span> bitToCheck = chunkId &amp; numChunksToSkip;</div>
<div class="line"><a name="l01309"></a><span class="lineno"> 1309</span>&#160;    <span class="keywordflow">return</span> bitToCheck;</div>
<div class="line"><a name="l01310"></a><span class="lineno"> 1310</span>&#160;}</div>
<div class="line"><a name="l01311"></a><span class="lineno"> 1311</span>&#160; </div>
<div class="line"><a name="l01312"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a63cb88a5f4eb12fef087435b8db3f8eb"> 1312</a></span>&#160;<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#a63cb88a5f4eb12fef087435b8db3f8eb">statevec_calcProbOfOutcome</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> measureQubit, <span class="keywordtype">int</span> outcome)</div>
<div class="line"><a name="l01313"></a><span class="lineno"> 1313</span>&#160;{</div>
<div class="line"><a name="l01314"></a><span class="lineno"> 1314</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> stateProb=0, totalStateProb=0;</div>
<div class="line"><a name="l01315"></a><span class="lineno"> 1315</span>&#160;    <span class="keywordtype">int</span> skipValuesWithinRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, measureQubit);</div>
<div class="line"><a name="l01316"></a><span class="lineno"> 1316</span>&#160;    <span class="keywordflow">if</span> (skipValuesWithinRank) {</div>
<div class="line"><a name="l01317"></a><span class="lineno"> 1317</span>&#160;        stateProb = <a class="code" href="QuEST__cpu_8c.html#a8535bc15c2ff249ddddb3fde6eff1490">statevec_findProbabilityOfZeroLocal</a>(qureg, measureQubit);</div>
<div class="line"><a name="l01318"></a><span class="lineno"> 1318</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01319"></a><span class="lineno"> 1319</span>&#160;        <span class="keywordflow">if</span> (!<a class="code" href="QuEST__cpu__distributed_8c.html#af0ea25f00987af4c53f17c9cca62ab41">isChunkToSkipInFindPZero</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, measureQubit)){</div>
<div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>&#160;            stateProb = <a class="code" href="QuEST__cpu_8c.html#a430d98e35f1eae7f0815ac539057cf67">statevec_findProbabilityOfZeroDistributed</a>(qureg);</div>
<div class="line"><a name="l01321"></a><span class="lineno"> 1321</span>&#160;        } <span class="keywordflow">else</span> stateProb = 0;</div>
<div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>&#160;    }</div>
<div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>&#160;    MPI_Allreduce(&amp;stateProb, &amp;totalStateProb, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>&#160;    <span class="keywordflow">if</span> (outcome==1) totalStateProb = 1.0 - totalStateProb;</div>
<div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>&#160;    <span class="keywordflow">return</span> totalStateProb;</div>
<div class="line"><a name="l01326"></a><span class="lineno"> 1326</span>&#160;}</div>
<div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>&#160; </div>
<div class="line"><a name="l01328"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ae37b3eff5d3affbc1edfe216cabc1c53"> 1328</a></span>&#160;<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#ae37b3eff5d3affbc1edfe216cabc1c53">densmatr_calcProbOfOutcome</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> measureQubit, <span class="keywordtype">int</span> outcome) {</div>
<div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>&#160;        </div>
<div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>&#160;        <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> zeroProb = <a class="code" href="QuEST__cpu_8c.html#a8bea931504c90d9bd97e74645667804e">densmatr_findProbabilityOfZeroLocal</a>(qureg, measureQubit);</div>
<div class="line"><a name="l01331"></a><span class="lineno"> 1331</span>&#160;        </div>
<div class="line"><a name="l01332"></a><span class="lineno"> 1332</span>&#160;        <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> outcomeProb;</div>
<div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>&#160;        MPI_Allreduce(&amp;zeroProb, &amp;outcomeProb, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01334"></a><span class="lineno"> 1334</span>&#160;        <span class="keywordflow">if</span> (outcome == 1)</div>
<div class="line"><a name="l01335"></a><span class="lineno"> 1335</span>&#160;                outcomeProb = 1.0 - outcomeProb;</div>
<div class="line"><a name="l01336"></a><span class="lineno"> 1336</span>&#160;        </div>
<div class="line"><a name="l01337"></a><span class="lineno"> 1337</span>&#160;        <span class="keywordflow">return</span> outcomeProb;</div>
<div class="line"><a name="l01338"></a><span class="lineno"> 1338</span>&#160;}</div>
<div class="line"><a name="l01339"></a><span class="lineno"> 1339</span>&#160; </div>
<div class="line"><a name="l01340"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a78cf98ea535790bc46069b60bae342c7"> 1340</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a78cf98ea535790bc46069b60bae342c7">statevec_calcProbOfAllOutcomes</a>(<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* retProbs, <a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span>* qubits, <span class="keywordtype">int</span> numQubits) {</div>
<div class="line"><a name="l01341"></a><span class="lineno"> 1341</span>&#160;    </div>
<div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>&#160;    <span class="comment">// each node populates retProbs with contributions from the subset of amps in each</span></div>
<div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>&#160;    <a class="code" href="QuEST__cpu_8c.html#afb1e220c272754d0773aeccdb613b6b3">statevec_calcProbOfAllOutcomesLocal</a>(retProbs, qureg, qubits, numQubits);</div>
<div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>&#160; </div>
<div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>&#160;    <span class="comment">// then, retProbs are summed element-wise</span></div>
<div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>&#160;    MPI_Allreduce(MPI_IN_PLACE, retProbs, 1LL&lt;&lt;numQubits, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01347"></a><span class="lineno"> 1347</span>&#160;}</div>
<div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>&#160; </div>
<div class="line"><a name="l01349"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a2c664d8abca0a6f87c2bf4fe75fbff90"> 1349</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a2c664d8abca0a6f87c2bf4fe75fbff90">densmatr_calcProbOfAllOutcomes</a>(<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* retProbs, <a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span>* qubits, <span class="keywordtype">int</span> numQubits) {</div>
<div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>&#160;    </div>
<div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>&#160;    <span class="comment">// each node populates retProbs with contributions from the subset of amps in each</span></div>
<div class="line"><a name="l01352"></a><span class="lineno"> 1352</span>&#160;    <a class="code" href="QuEST__cpu_8c.html#a73a6c5647862b882f4ed7d83ec3c3e1f">densmatr_calcProbOfAllOutcomesLocal</a>(retProbs, qureg, qubits, numQubits);</div>
<div class="line"><a name="l01353"></a><span class="lineno"> 1353</span>&#160; </div>
<div class="line"><a name="l01354"></a><span class="lineno"> 1354</span>&#160;    <span class="comment">// then, retProbs are summed element-wise</span></div>
<div class="line"><a name="l01355"></a><span class="lineno"> 1355</span>&#160;    MPI_Allreduce(MPI_IN_PLACE, retProbs, 1LL&lt;&lt;numQubits, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01356"></a><span class="lineno"> 1356</span>&#160;}</div>
<div class="line"><a name="l01357"></a><span class="lineno"> 1357</span>&#160; </div>
<div class="line"><a name="l01358"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ae45eefa65f4ecd37bab84fade7cf7f1f"> 1358</a></span>&#160;<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#ae45eefa65f4ecd37bab84fade7cf7f1f">densmatr_calcPurity</a>(<a class="code" href="structQureg.html">Qureg</a> qureg) {</div>
<div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>&#160;    </div>
<div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localPurity = <a class="code" href="QuEST__cpu_8c.html#af910c7cf2b85bdc2c399cfe8dbfb8b9c">densmatr_calcPurityLocal</a>(qureg);</div>
<div class="line"><a name="l01361"></a><span class="lineno"> 1361</span>&#160;        </div>
<div class="line"><a name="l01362"></a><span class="lineno"> 1362</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalPurity;</div>
<div class="line"><a name="l01363"></a><span class="lineno"> 1363</span>&#160;    MPI_Allreduce(&amp;localPurity, &amp;globalPurity, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01364"></a><span class="lineno"> 1364</span>&#160;    </div>
<div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>&#160;    <span class="keywordflow">return</span> globalPurity;</div>
<div class="line"><a name="l01366"></a><span class="lineno"> 1366</span>&#160;}</div>
<div class="line"><a name="l01367"></a><span class="lineno"> 1367</span>&#160; </div>
<div class="line"><a name="l01368"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ab07dc84ee1f2034482f1c186576434be"> 1368</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ab07dc84ee1f2034482f1c186576434be">statevec_collapseToKnownProbOutcome</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> measureQubit, <span class="keywordtype">int</span> outcome, <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> totalStateProb)</div>
<div class="line"><a name="l01369"></a><span class="lineno"> 1369</span>&#160;{</div>
<div class="line"><a name="l01370"></a><span class="lineno"> 1370</span>&#160;    <span class="keywordtype">int</span> skipValuesWithinRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, measureQubit);</div>
<div class="line"><a name="l01371"></a><span class="lineno"> 1371</span>&#160;    <span class="keywordflow">if</span> (skipValuesWithinRank) {</div>
<div class="line"><a name="l01372"></a><span class="lineno"> 1372</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#ab02bce0ebbb8f624e8ced8b09b99cdef">statevec_collapseToKnownProbOutcomeLocal</a>(qureg, measureQubit, outcome, totalStateProb);</div>
<div class="line"><a name="l01373"></a><span class="lineno"> 1373</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01374"></a><span class="lineno"> 1374</span>&#160;        <span class="keywordflow">if</span> (!<a class="code" href="QuEST__cpu__distributed_8c.html#af0ea25f00987af4c53f17c9cca62ab41">isChunkToSkipInFindPZero</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, measureQubit)){</div>
<div class="line"><a name="l01375"></a><span class="lineno"> 1375</span>&#160;            <span class="comment">// chunk has amps for q=0</span></div>
<div class="line"><a name="l01376"></a><span class="lineno"> 1376</span>&#160;            <span class="keywordflow">if</span> (outcome==0) <a class="code" href="QuEST__cpu_8c.html#ad09bb76ad67581b03ab176832cca37cf">statevec_collapseToKnownProbOutcomeDistributedRenorm</a>(qureg, measureQubit, </div>
<div class="line"><a name="l01377"></a><span class="lineno"> 1377</span>&#160;                    totalStateProb);</div>
<div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>&#160;            <span class="keywordflow">else</span> <a class="code" href="QuEST__cpu_8c.html#a7ea68e9132ed9db9c242353a33dba2f0">statevec_collapseToOutcomeDistributedSetZero</a>(qureg);</div>
<div class="line"><a name="l01379"></a><span class="lineno"> 1379</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01380"></a><span class="lineno"> 1380</span>&#160;            <span class="comment">// chunk has amps for q=1</span></div>
<div class="line"><a name="l01381"></a><span class="lineno"> 1381</span>&#160;            <span class="keywordflow">if</span> (outcome==1) <a class="code" href="QuEST__cpu_8c.html#ad09bb76ad67581b03ab176832cca37cf">statevec_collapseToKnownProbOutcomeDistributedRenorm</a>(qureg, measureQubit, </div>
<div class="line"><a name="l01382"></a><span class="lineno"> 1382</span>&#160;                    totalStateProb);</div>
<div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>&#160;            <span class="keywordflow">else</span> <a class="code" href="QuEST__cpu_8c.html#a7ea68e9132ed9db9c242353a33dba2f0">statevec_collapseToOutcomeDistributedSetZero</a>(qureg);</div>
<div class="line"><a name="l01384"></a><span class="lineno"> 1384</span>&#160;        }</div>
<div class="line"><a name="l01385"></a><span class="lineno"> 1385</span>&#160;    }</div>
<div class="line"><a name="l01386"></a><span class="lineno"> 1386</span>&#160;}</div>
<div class="line"><a name="l01387"></a><span class="lineno"> 1387</span>&#160; </div>
<div class="line"><a name="l01388"></a><span class="lineno"><a class="line" href="group__debug.html#ga555451c697ea4a9d27389155f68fdabc"> 1388</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__debug.html#ga555451c697ea4a9d27389155f68fdabc">seedQuEST</a>(<a class="code" href="structQuESTEnv.html">QuESTEnv</a> *env, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span>* seedArray, <span class="keywordtype">int</span> numSeeds) {</div>
<div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>&#160; </div>
<div class="line"><a name="l01390"></a><span class="lineno"> 1390</span>&#160;    <span class="comment">// it is imperative every node agrees on the seed, so that random decisions </span></div>
<div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>&#160;    <span class="comment">// agree on every node. Hence we use only the master node keys.</span></div>
<div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>&#160;    MPI_Bcast(seedArray, numSeeds, MPI_UNSIGNED_LONG, 0, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>&#160;    </div>
<div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>&#160;    <span class="comment">// free existing seed array, if exists</span></div>
<div class="line"><a name="l01395"></a><span class="lineno"> 1395</span>&#160;    <span class="keywordflow">if</span> (env-&gt;<a class="code" href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">seeds</a> != NULL)</div>
<div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>&#160;        free(env-&gt;<a class="code" href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">seeds</a>);</div>
<div class="line"><a name="l01397"></a><span class="lineno"> 1397</span>&#160;        </div>
<div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>&#160;    <span class="comment">// record keys in permanent heap</span></div>
<div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>&#160;    env-&gt;<a class="code" href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">seeds</a> = malloc(numSeeds * <span class="keyword">sizeof</span> *(env-&gt;<a class="code" href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">seeds</a>));</div>
<div class="line"><a name="l01400"></a><span class="lineno"> 1400</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i&lt;numSeeds; i++)</div>
<div class="line"><a name="l01401"></a><span class="lineno"> 1401</span>&#160;        (env-&gt;<a class="code" href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">seeds</a>)[i] = seedArray[i];</div>
<div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>&#160;    env-&gt;<a class="code" href="structQuESTEnv.html#a46e67e1a5ab930e04ff59f83f1d8630d">numSeeds</a> = numSeeds;</div>
<div class="line"><a name="l01403"></a><span class="lineno"> 1403</span>&#160;    </div>
<div class="line"><a name="l01404"></a><span class="lineno"> 1404</span>&#160;    <span class="comment">// pass keys to Mersenne Twister seeder</span></div>
<div class="line"><a name="l01405"></a><span class="lineno"> 1405</span>&#160;    <a class="code" href="mt19937ar_8c.html#ac1283f9b1ed571332f5ffe53545ffc16">init_by_array</a>(seedArray, numSeeds); </div>
<div class="line"><a name="l01406"></a><span class="lineno"> 1406</span>&#160;}</div>
<div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>&#160; </div>
<div class="line"><a name="l01412"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a4f243eb101c8e63f16cfd50300364cb7"> 1412</a></span>&#160;<span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a4f243eb101c8e63f16cfd50300364cb7">getGlobalIndOfOddParityInChunk</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> qb1, <span class="keywordtype">int</span> qb2) {</div>
<div class="line"><a name="l01413"></a><span class="lineno"> 1413</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkStartInd = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a> * qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>;</div>
<div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkEndInd = chunkStartInd + qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>; <span class="comment">// exclusive</span></div>
<div class="line"><a name="l01415"></a><span class="lineno"> 1415</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> oddParityInd;</div>
<div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>&#160;    </div>
<div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="QuEST__gpu_8cu.html#aec1852e1a8e70d3690919ce8ab551ba0">extractBit</a>(qb1, chunkStartInd) != <a class="code" href="QuEST__gpu_8cu.html#aec1852e1a8e70d3690919ce8ab551ba0">extractBit</a>(qb2, chunkStartInd))</div>
<div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>&#160;        <span class="keywordflow">return</span> chunkStartInd;</div>
<div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>&#160;    </div>
<div class="line"><a name="l01420"></a><span class="lineno"> 1420</span>&#160;    oddParityInd = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(chunkStartInd, qb1);</div>
<div class="line"><a name="l01421"></a><span class="lineno"> 1421</span>&#160;    <span class="keywordflow">if</span> (oddParityInd &gt;= chunkStartInd &amp;&amp; oddParityInd &lt; chunkEndInd)</div>
<div class="line"><a name="l01422"></a><span class="lineno"> 1422</span>&#160;        <span class="keywordflow">return</span> oddParityInd;</div>
<div class="line"><a name="l01423"></a><span class="lineno"> 1423</span>&#160;        </div>
<div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>&#160;    oddParityInd = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(chunkStartInd, qb2);</div>
<div class="line"><a name="l01425"></a><span class="lineno"> 1425</span>&#160;    <span class="keywordflow">if</span> (oddParityInd &gt;= chunkStartInd &amp;&amp; oddParityInd &lt; chunkEndInd)</div>
<div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>&#160;        <span class="keywordflow">return</span> oddParityInd;</div>
<div class="line"><a name="l01427"></a><span class="lineno"> 1427</span>&#160;    </div>
<div class="line"><a name="l01428"></a><span class="lineno"> 1428</span>&#160;    <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l01429"></a><span class="lineno"> 1429</span>&#160;}</div>
<div class="line"><a name="l01430"></a><span class="lineno"> 1430</span>&#160; </div>
<div class="line"><a name="l01431"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375"> 1431</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> qb1, <span class="keywordtype">int</span> qb2) {</div>
<div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>&#160;    </div>
<div class="line"><a name="l01433"></a><span class="lineno"> 1433</span>&#160;    <span class="comment">// perform locally if possible </span></div>
<div class="line"><a name="l01434"></a><span class="lineno"> 1434</span>&#160;    <span class="keywordtype">int</span> qbBig = (qb1 &gt; qb2)? qb1 : qb2;</div>
<div class="line"><a name="l01435"></a><span class="lineno"> 1435</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, qbBig))</div>
<div class="line"><a name="l01436"></a><span class="lineno"> 1436</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="QuEST__cpu_8c.html#ab5b51a28caa8792a3f0c637409a694b0">statevec_swapQubitAmpsLocal</a>(qureg, qb1, qb2);</div>
<div class="line"><a name="l01437"></a><span class="lineno"> 1437</span>&#160;        </div>
<div class="line"><a name="l01438"></a><span class="lineno"> 1438</span>&#160;    <span class="comment">// do nothing if this node contains no amplitudes to swap</span></div>
<div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> oddParityGlobalInd = <a class="code" href="QuEST__cpu__distributed_8c.html#a4f243eb101c8e63f16cfd50300364cb7">getGlobalIndOfOddParityInChunk</a>(qureg, qb1, qb2);</div>
<div class="line"><a name="l01440"></a><span class="lineno"> 1440</span>&#160;    <span class="keywordflow">if</span> (oddParityGlobalInd == -1)</div>
<div class="line"><a name="l01441"></a><span class="lineno"> 1441</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l01442"></a><span class="lineno"> 1442</span>&#160; </div>
<div class="line"><a name="l01443"></a><span class="lineno"> 1443</span>&#160;    <span class="comment">// determine and swap amps with pair node</span></div>
<div class="line"><a name="l01444"></a><span class="lineno"> 1444</span>&#160;    <span class="keywordtype">int</span> pairRank = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(oddParityGlobalInd, qb1), qb2) / qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l01445"></a><span class="lineno"> 1445</span>&#160;    <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01446"></a><span class="lineno"> 1446</span>&#160;    <a class="code" href="QuEST__cpu_8c.html#abe74a5a9db8340e37b80fbc77338894d">statevec_swapQubitAmpsDistributed</a>(qureg, pairRank, qb1, qb2);</div>
<div class="line"><a name="l01447"></a><span class="lineno"> 1447</span>&#160;}</div>
<div class="line"><a name="l01448"></a><span class="lineno"> 1448</span>&#160; </div>
<div class="line"><a name="l01458"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#affbd18d7c2ed8d5bd5edb67116501145"> 1458</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#affbd18d7c2ed8d5bd5edb67116501145">statevec_multiControlledTwoQubitUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> ctrlMask, <span class="keywordtype">int</span> q1, <span class="keywordtype">int</span> q2, <a class="code" href="structComplexMatrix4.html">ComplexMatrix4</a> u) {</div>
<div class="line"><a name="l01459"></a><span class="lineno"> 1459</span>&#160;    <span class="keywordtype">int</span> q1FitsInNode = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, q1);</div>
<div class="line"><a name="l01460"></a><span class="lineno"> 1460</span>&#160;    <span class="keywordtype">int</span> q2FitsInNode = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, q2);</div>
<div class="line"><a name="l01461"></a><span class="lineno"> 1461</span>&#160;        </div>
<div class="line"><a name="l01462"></a><span class="lineno"> 1462</span>&#160;    <span class="keywordflow">if</span> (q1FitsInNode &amp;&amp; q2FitsInNode) {    </div>
<div class="line"><a name="l01463"></a><span class="lineno"> 1463</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#af8236a00389137b5eff986a40577eaf3">statevec_multiControlledTwoQubitUnitaryLocal</a>(qureg, ctrlMask, q1, q2, u);</div>
<div class="line"><a name="l01464"></a><span class="lineno"> 1464</span>&#160;        </div>
<div class="line"><a name="l01465"></a><span class="lineno"> 1465</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (q1FitsInNode) {</div>
<div class="line"><a name="l01466"></a><span class="lineno"> 1466</span>&#160;        <span class="keywordtype">int</span> qSwap = (q1 &gt; 0)? q1-1 : q1+1;</div>
<div class="line"><a name="l01467"></a><span class="lineno"> 1467</span>&#160; </div>
<div class="line"><a name="l01468"></a><span class="lineno"> 1468</span>&#160;        <span class="comment">// ensure ctrl == qSwap, ensure ctrlMask updates under the swap</span></div>
<div class="line"><a name="l01469"></a><span class="lineno"> 1469</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a>(ctrlMask, qSwap))</div>
<div class="line"><a name="l01470"></a><span class="lineno"> 1470</span>&#160;            ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(ctrlMask, q2), qSwap);</div>
<div class="line"><a name="l01471"></a><span class="lineno"> 1471</span>&#160; </div>
<div class="line"><a name="l01472"></a><span class="lineno"> 1472</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q2, qSwap);</div>
<div class="line"><a name="l01473"></a><span class="lineno"> 1473</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#af8236a00389137b5eff986a40577eaf3">statevec_multiControlledTwoQubitUnitaryLocal</a>(qureg, ctrlMask, q1, qSwap, u);</div>
<div class="line"><a name="l01474"></a><span class="lineno"> 1474</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q2, qSwap);</div>
<div class="line"><a name="l01475"></a><span class="lineno"> 1475</span>&#160; </div>
<div class="line"><a name="l01476"></a><span class="lineno"> 1476</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (q2FitsInNode) {</div>
<div class="line"><a name="l01477"></a><span class="lineno"> 1477</span>&#160;        <span class="keywordtype">int</span> qSwap = (q2 &gt; 0)? q2-1 : q2+1;</div>
<div class="line"><a name="l01478"></a><span class="lineno"> 1478</span>&#160;        </div>
<div class="line"><a name="l01479"></a><span class="lineno"> 1479</span>&#160;        <span class="comment">// ensure ctrl == qSwap, ensure ctrlMask updates under the swap</span></div>
<div class="line"><a name="l01480"></a><span class="lineno"> 1480</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a>(ctrlMask, qSwap))</div>
<div class="line"><a name="l01481"></a><span class="lineno"> 1481</span>&#160;            ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(ctrlMask, q1), qSwap);</div>
<div class="line"><a name="l01482"></a><span class="lineno"> 1482</span>&#160;        </div>
<div class="line"><a name="l01483"></a><span class="lineno"> 1483</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q1, qSwap);</div>
<div class="line"><a name="l01484"></a><span class="lineno"> 1484</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#af8236a00389137b5eff986a40577eaf3">statevec_multiControlledTwoQubitUnitaryLocal</a>(qureg, ctrlMask, qSwap, q2, u);</div>
<div class="line"><a name="l01485"></a><span class="lineno"> 1485</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q1, qSwap);</div>
<div class="line"><a name="l01486"></a><span class="lineno"> 1486</span>&#160;        </div>
<div class="line"><a name="l01487"></a><span class="lineno"> 1487</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01488"></a><span class="lineno"> 1488</span>&#160;        <span class="comment">// we know with certainty that both q1 and q2 &gt;= 2</span></div>
<div class="line"><a name="l01489"></a><span class="lineno"> 1489</span>&#160;        <span class="keywordtype">int</span> swap1 = 0;</div>
<div class="line"><a name="l01490"></a><span class="lineno"> 1490</span>&#160;        <span class="keywordtype">int</span> swap2 = 1;</div>
<div class="line"><a name="l01491"></a><span class="lineno"> 1491</span>&#160;        </div>
<div class="line"><a name="l01492"></a><span class="lineno"> 1492</span>&#160;        <span class="comment">// if ctrl == swap1 or swap2, ensure ctrlMask updates under the swap</span></div>
<div class="line"><a name="l01493"></a><span class="lineno"> 1493</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a>(ctrlMask, swap1))</div>
<div class="line"><a name="l01494"></a><span class="lineno"> 1494</span>&#160;            ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(ctrlMask, swap1), q1);</div>
<div class="line"><a name="l01495"></a><span class="lineno"> 1495</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a>(ctrlMask, swap2))</div>
<div class="line"><a name="l01496"></a><span class="lineno"> 1496</span>&#160;            ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(ctrlMask, swap2), q2);</div>
<div class="line"><a name="l01497"></a><span class="lineno"> 1497</span>&#160;        </div>
<div class="line"><a name="l01498"></a><span class="lineno"> 1498</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q1, swap1);</div>
<div class="line"><a name="l01499"></a><span class="lineno"> 1499</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q2, swap2);</div>
<div class="line"><a name="l01500"></a><span class="lineno"> 1500</span>&#160;        <a class="code" href="QuEST__cpu_8c.html#af8236a00389137b5eff986a40577eaf3">statevec_multiControlledTwoQubitUnitaryLocal</a>(qureg, ctrlMask, swap1, swap2, u);</div>
<div class="line"><a name="l01501"></a><span class="lineno"> 1501</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q1, swap1);</div>
<div class="line"><a name="l01502"></a><span class="lineno"> 1502</span>&#160;        <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q2, swap2);</div>
<div class="line"><a name="l01503"></a><span class="lineno"> 1503</span>&#160;    }</div>
<div class="line"><a name="l01504"></a><span class="lineno"> 1504</span>&#160;}</div>
<div class="line"><a name="l01505"></a><span class="lineno"> 1505</span>&#160; </div>
<div class="line"><a name="l01514"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a0acfe30083d0bc2a84da196378a36122"> 1514</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0acfe30083d0bc2a84da196378a36122">statevec_multiControlledMultiQubitUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> ctrlMask, <span class="keywordtype">int</span>* targs, <span class="keywordtype">int</span> numTargs, <a class="code" href="structComplexMatrixN.html">ComplexMatrixN</a> u) {</div>
<div class="line"><a name="l01515"></a><span class="lineno"> 1515</span>&#160; </div>
<div class="line"><a name="l01516"></a><span class="lineno"> 1516</span>&#160;    <span class="comment">// bit mask of target qubits (for quick collision checking)</span></div>
<div class="line"><a name="l01517"></a><span class="lineno"> 1517</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> targMask = <a class="code" href="QuEST__common_8c.html#acc45bb8300922ea5933e294921e25ea2">getQubitBitMask</a>(targs, numTargs);</div>
<div class="line"><a name="l01518"></a><span class="lineno"> 1518</span>&#160;    </div>
<div class="line"><a name="l01519"></a><span class="lineno"> 1519</span>&#160;    <span class="comment">// find lowest qubit available for swapping (isn&#39;t in targs)</span></div>
<div class="line"><a name="l01520"></a><span class="lineno"> 1520</span>&#160;    <span class="keywordtype">int</span> freeQb=0;</div>
<div class="line"><a name="l01521"></a><span class="lineno"> 1521</span>&#160;    <span class="keywordflow">while</span> (<a class="code" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a>(targMask, freeQb))</div>
<div class="line"><a name="l01522"></a><span class="lineno"> 1522</span>&#160;        freeQb++;</div>
<div class="line"><a name="l01523"></a><span class="lineno"> 1523</span>&#160;        </div>
<div class="line"><a name="l01524"></a><span class="lineno"> 1524</span>&#160;    <span class="comment">// assign indices of where each target will be swapped to (else itself)</span></div>
<div class="line"><a name="l01525"></a><span class="lineno"> 1525</span>&#160;    <span class="keywordtype">int</span> swapTargs[numTargs];</div>
<div class="line"><a name="l01526"></a><span class="lineno"> 1526</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> t=0; t&lt;numTargs; t++) {</div>
<div class="line"><a name="l01527"></a><span class="lineno"> 1527</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targs[t]))</div>
<div class="line"><a name="l01528"></a><span class="lineno"> 1528</span>&#160;            swapTargs[t] = targs[t];</div>
<div class="line"><a name="l01529"></a><span class="lineno"> 1529</span>&#160;        <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01530"></a><span class="lineno"> 1530</span>&#160;            <span class="comment">// mark swap</span></div>
<div class="line"><a name="l01531"></a><span class="lineno"> 1531</span>&#160;            swapTargs[t] = freeQb;</div>
<div class="line"><a name="l01532"></a><span class="lineno"> 1532</span>&#160;            </div>
<div class="line"><a name="l01533"></a><span class="lineno"> 1533</span>&#160;            <span class="comment">// update ctrlMask if swapped-out qubit was a control</span></div>
<div class="line"><a name="l01534"></a><span class="lineno"> 1534</span>&#160;            <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a>(ctrlMask, swapTargs[t]))</div>
<div class="line"><a name="l01535"></a><span class="lineno"> 1535</span>&#160;                ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(ctrlMask, swapTargs[t]), targs[t]); <span class="comment">// swap targ and ctrl</span></div>
<div class="line"><a name="l01536"></a><span class="lineno"> 1536</span>&#160;            </div>
<div class="line"><a name="l01537"></a><span class="lineno"> 1537</span>&#160;            <span class="comment">// locate next available on-chunk qubit</span></div>
<div class="line"><a name="l01538"></a><span class="lineno"> 1538</span>&#160;            freeQb++;</div>
<div class="line"><a name="l01539"></a><span class="lineno"> 1539</span>&#160;            <span class="keywordflow">while</span> (<a class="code" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a>(targMask, freeQb))</div>
<div class="line"><a name="l01540"></a><span class="lineno"> 1540</span>&#160;                freeQb++;</div>
<div class="line"><a name="l01541"></a><span class="lineno"> 1541</span>&#160;        }</div>
<div class="line"><a name="l01542"></a><span class="lineno"> 1542</span>&#160;    }</div>
<div class="line"><a name="l01543"></a><span class="lineno"> 1543</span>&#160;    </div>
<div class="line"><a name="l01544"></a><span class="lineno"> 1544</span>&#160;    <span class="comment">// perform swaps as necessary </span></div>
<div class="line"><a name="l01545"></a><span class="lineno"> 1545</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> t=0; t&lt;numTargs; t++)</div>
<div class="line"><a name="l01546"></a><span class="lineno"> 1546</span>&#160;        <span class="keywordflow">if</span> (swapTargs[t] != targs[t])</div>
<div class="line"><a name="l01547"></a><span class="lineno"> 1547</span>&#160;            <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, targs[t], swapTargs[t]);</div>
<div class="line"><a name="l01548"></a><span class="lineno"> 1548</span>&#160;    </div>
<div class="line"><a name="l01549"></a><span class="lineno"> 1549</span>&#160;    <span class="comment">// all target qubits have now been swapped into local memory</span></div>
<div class="line"><a name="l01550"></a><span class="lineno"> 1550</span>&#160;    <a class="code" href="QuEST__cpu_8c.html#a0aedcccfa50c7aaa8b7fc4c14d7cdfb8">statevec_multiControlledMultiQubitUnitaryLocal</a>(qureg, ctrlMask, swapTargs, numTargs, u);</div>
<div class="line"><a name="l01551"></a><span class="lineno"> 1551</span>&#160;    </div>
<div class="line"><a name="l01552"></a><span class="lineno"> 1552</span>&#160;    <span class="comment">// undo swaps </span></div>
<div class="line"><a name="l01553"></a><span class="lineno"> 1553</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> t=0; t&lt;numTargs; t++)</div>
<div class="line"><a name="l01554"></a><span class="lineno"> 1554</span>&#160;        <span class="keywordflow">if</span> (swapTargs[t] != targs[t])</div>
<div class="line"><a name="l01555"></a><span class="lineno"> 1555</span>&#160;            <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, targs[t], swapTargs[t]);</div>
<div class="line"><a name="l01556"></a><span class="lineno"> 1556</span>&#160;}</div>
<div class="line"><a name="l01557"></a><span class="lineno"> 1557</span>&#160; </div>
<div class="line"><a name="l01558"></a><span class="lineno"> 1558</span>&#160; </div>
<div class="line"><a name="l01559"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#aefba328e047e6ef4fd1ae4b56901aaa7"> 1559</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#aefba328e047e6ef4fd1ae4b56901aaa7">copyDiagOpIntoMatrixPairState</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <a class="code" href="structDiagonalOp.html">DiagonalOp</a> op) {</div>
<div class="line"><a name="l01560"></a><span class="lineno"> 1560</span>&#160;        </div>
<div class="line"><a name="l01561"></a><span class="lineno"> 1561</span>&#160;    <span class="comment">/* since, for every elem in 2^N op, there is a column in 2^N x 2^N qureg, </span></div>
<div class="line"><a name="l01562"></a><span class="lineno"> 1562</span>&#160;<span class="comment">     * we know immediately (by each node containing at least 1 element of op)</span></div>
<div class="line"><a name="l01563"></a><span class="lineno"> 1563</span>&#160;<span class="comment">     * that every node contains at least 1 column. Hence, we know that pairStateVec </span></div>
<div class="line"><a name="l01564"></a><span class="lineno"> 1564</span>&#160;<span class="comment">     * of qureg can fit the entirety of op.</span></div>
<div class="line"><a name="l01565"></a><span class="lineno"> 1565</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l01566"></a><span class="lineno"> 1566</span>&#160; </div>
<div class="line"><a name="l01567"></a><span class="lineno"> 1567</span>&#160;    <span class="comment">// load up our local contribution</span></div>
<div class="line"><a name="l01568"></a><span class="lineno"> 1568</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> localOffset = qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a> * op.<a class="code" href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">numElemsPerChunk</a>;</div>
<div class="line"><a name="l01569"></a><span class="lineno"> 1569</span>&#160;    memcpy(&amp;qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[localOffset], op.<a class="code" href="structDiagonalOp.html#a1d66088bed235d524cd452b107694d5c">real</a>, op.<a class="code" href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">numElemsPerChunk</a> * <span class="keyword">sizeof</span>(<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>));</div>
<div class="line"><a name="l01570"></a><span class="lineno"> 1570</span>&#160;    memcpy(&amp;qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[localOffset], op.<a class="code" href="structDiagonalOp.html#a85c3f52533efe831bbe40b9a48602388">imag</a>, op.<a class="code" href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">numElemsPerChunk</a> * <span class="keyword">sizeof</span>(<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>));</div>
<div class="line"><a name="l01571"></a><span class="lineno"> 1571</span>&#160;    </div>
<div class="line"><a name="l01572"></a><span class="lineno"> 1572</span>&#160;    <span class="comment">// work out how many messages are needed to send op chunks (2GB limit)</span></div>
<div class="line"><a name="l01573"></a><span class="lineno"> 1573</span>&#160;    <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> maxMsgSize = MPI_MAX_AMPS_IN_MSG;</div>
<div class="line"><a name="l01574"></a><span class="lineno"> 1574</span>&#160;    <span class="keywordflow">if</span> (op.<a class="code" href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">numElemsPerChunk</a> &lt; maxMsgSize) </div>
<div class="line"><a name="l01575"></a><span class="lineno"> 1575</span>&#160;        maxMsgSize = op.<a class="code" href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">numElemsPerChunk</a>;</div>
<div class="line"><a name="l01576"></a><span class="lineno"> 1576</span>&#160;    <span class="keywordtype">int</span> numMsgs = op.<a class="code" href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">numElemsPerChunk</a> / maxMsgSize; <span class="comment">// since MPI_MAX... = 2^n, division is exact</span></div>
<div class="line"><a name="l01577"></a><span class="lineno"> 1577</span>&#160;    </div>
<div class="line"><a name="l01578"></a><span class="lineno"> 1578</span>&#160;    <span class="comment">// each node has a turn at broadcasting its contribution of op</span></div>
<div class="line"><a name="l01579"></a><span class="lineno"> 1579</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> broadcaster=0; broadcaster &lt; qureg.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a>; broadcaster++) {</div>
<div class="line"><a name="l01580"></a><span class="lineno"> 1580</span>&#160;        <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> broadOffset = broadcaster * op.<a class="code" href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">numElemsPerChunk</a>;</div>
<div class="line"><a name="l01581"></a><span class="lineno"> 1581</span>&#160;    </div>
<div class="line"><a name="l01582"></a><span class="lineno"> 1582</span>&#160;        <span class="comment">// (while keeping each message smaller than MPI max)</span></div>
<div class="line"><a name="l01583"></a><span class="lineno"> 1583</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i&lt;numMsgs; i++) {</div>
<div class="line"><a name="l01584"></a><span class="lineno"> 1584</span>&#160;            MPI_Bcast(</div>
<div class="line"><a name="l01585"></a><span class="lineno"> 1585</span>&#160;                &amp;qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[broadOffset + i*maxMsgSize], </div>
<div class="line"><a name="l01586"></a><span class="lineno"> 1586</span>&#160;                maxMsgSize,  MPI_QuEST_REAL, broadcaster, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01587"></a><span class="lineno"> 1587</span>&#160;            MPI_Bcast(</div>
<div class="line"><a name="l01588"></a><span class="lineno"> 1588</span>&#160;                &amp;qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[broadOffset + i*maxMsgSize], </div>
<div class="line"><a name="l01589"></a><span class="lineno"> 1589</span>&#160;                maxMsgSize,  MPI_QuEST_REAL, broadcaster, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01590"></a><span class="lineno"> 1590</span>&#160;        }</div>
<div class="line"><a name="l01591"></a><span class="lineno"> 1591</span>&#160;    }</div>
<div class="line"><a name="l01592"></a><span class="lineno"> 1592</span>&#160;}</div>
<div class="line"><a name="l01593"></a><span class="lineno"> 1593</span>&#160; </div>
<div class="line"><a name="l01594"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#aedd7ecccf2f09dd2f1c5d191950b51e6"> 1594</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#aedd7ecccf2f09dd2f1c5d191950b51e6">densmatr_applyDiagonalOp</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <a class="code" href="structDiagonalOp.html">DiagonalOp</a> op) {</div>
<div class="line"><a name="l01595"></a><span class="lineno"> 1595</span>&#160;    </div>
<div class="line"><a name="l01596"></a><span class="lineno"> 1596</span>&#160;    <a class="code" href="QuEST__cpu__distributed_8c.html#aefba328e047e6ef4fd1ae4b56901aaa7">copyDiagOpIntoMatrixPairState</a>(qureg, op);</div>
<div class="line"><a name="l01597"></a><span class="lineno"> 1597</span>&#160;    <a class="code" href="QuEST__cpu_8c.html#afa58cf7cb98a25ab33621120c5c330d0">densmatr_applyDiagonalOpLocal</a>(qureg, op);</div>
<div class="line"><a name="l01598"></a><span class="lineno"> 1598</span>&#160;}</div>
<div class="line"><a name="l01599"></a><span class="lineno"> 1599</span>&#160; </div>
<div class="line"><a name="l01600"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a0fb948ddab4ca210e523aa3c52639df4"> 1600</a></span>&#160;<a class="code" href="structComplex.html">Complex</a> <a class="code" href="QuEST__cpu__distributed_8c.html#a0fb948ddab4ca210e523aa3c52639df4">statevec_calcExpecDiagonalOp</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <a class="code" href="structDiagonalOp.html">DiagonalOp</a> op) {</div>
<div class="line"><a name="l01601"></a><span class="lineno"> 1601</span>&#160; </div>
<div class="line"><a name="l01602"></a><span class="lineno"> 1602</span>&#160;    <a class="code" href="structComplex.html">Complex</a> localExpec = <a class="code" href="QuEST__cpu_8c.html#a16ccb485bcffb328bbd5b2af6977cead">statevec_calcExpecDiagonalOpLocal</a>(qureg, op);</div>
<div class="line"><a name="l01603"></a><span class="lineno"> 1603</span>&#160;    <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a> == 1)</div>
<div class="line"><a name="l01604"></a><span class="lineno"> 1604</span>&#160;        <span class="keywordflow">return</span> localExpec;</div>
<div class="line"><a name="l01605"></a><span class="lineno"> 1605</span>&#160;        </div>
<div class="line"><a name="l01606"></a><span class="lineno"> 1606</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localReal = localExpec.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>;</div>
<div class="line"><a name="l01607"></a><span class="lineno"> 1607</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localImag = localExpec.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a>;</div>
<div class="line"><a name="l01608"></a><span class="lineno"> 1608</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalReal, globalImag;</div>
<div class="line"><a name="l01609"></a><span class="lineno"> 1609</span>&#160;    MPI_Allreduce(&amp;localReal, &amp;globalReal, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01610"></a><span class="lineno"> 1610</span>&#160;    MPI_Allreduce(&amp;localImag, &amp;globalImag, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01611"></a><span class="lineno"> 1611</span>&#160;    </div>
<div class="line"><a name="l01612"></a><span class="lineno"> 1612</span>&#160;    <a class="code" href="structComplex.html">Complex</a> globalExpec;</div>
<div class="line"><a name="l01613"></a><span class="lineno"> 1613</span>&#160;    globalExpec.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a> = globalReal;</div>
<div class="line"><a name="l01614"></a><span class="lineno"> 1614</span>&#160;    globalExpec.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a> = globalImag;</div>
<div class="line"><a name="l01615"></a><span class="lineno"> 1615</span>&#160;    <span class="keywordflow">return</span> globalExpec;</div>
<div class="line"><a name="l01616"></a><span class="lineno"> 1616</span>&#160;}</div>
<div class="line"><a name="l01617"></a><span class="lineno"> 1617</span>&#160; </div>
<div class="line"><a name="l01618"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a70e3b0a2297c186d5c779af31459b4ca"> 1618</a></span>&#160;<a class="code" href="structComplex.html">Complex</a> <a class="code" href="QuEST__cpu__distributed_8c.html#a70e3b0a2297c186d5c779af31459b4ca">densmatr_calcExpecDiagonalOp</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <a class="code" href="structDiagonalOp.html">DiagonalOp</a> op) {</div>
<div class="line"><a name="l01619"></a><span class="lineno"> 1619</span>&#160;    </div>
<div class="line"><a name="l01620"></a><span class="lineno"> 1620</span>&#160;    <a class="code" href="structComplex.html">Complex</a> localVal = <a class="code" href="QuEST__cpu_8c.html#aeb4453a2e609e5359d2995bccf6663ca">densmatr_calcExpecDiagonalOpLocal</a>(qureg, op);</div>
<div class="line"><a name="l01621"></a><span class="lineno"> 1621</span>&#160;    <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a> == 1)</div>
<div class="line"><a name="l01622"></a><span class="lineno"> 1622</span>&#160;        <span class="keywordflow">return</span> localVal;</div>
<div class="line"><a name="l01623"></a><span class="lineno"> 1623</span>&#160;    </div>
<div class="line"><a name="l01624"></a><span class="lineno"> 1624</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localRe = localVal.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>;</div>
<div class="line"><a name="l01625"></a><span class="lineno"> 1625</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localIm = localVal.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a>;</div>
<div class="line"><a name="l01626"></a><span class="lineno"> 1626</span>&#160;    <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalRe, globalIm;</div>
<div class="line"><a name="l01627"></a><span class="lineno"> 1627</span>&#160;    </div>
<div class="line"><a name="l01628"></a><span class="lineno"> 1628</span>&#160;    MPI_Allreduce(&amp;localRe, &amp;globalRe, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01629"></a><span class="lineno"> 1629</span>&#160;    MPI_Allreduce(&amp;localIm, &amp;globalIm, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01630"></a><span class="lineno"> 1630</span>&#160;    </div>
<div class="line"><a name="l01631"></a><span class="lineno"> 1631</span>&#160;    <a class="code" href="structComplex.html">Complex</a> globalVal;</div>
<div class="line"><a name="l01632"></a><span class="lineno"> 1632</span>&#160;    globalVal.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a> = globalRe;</div>
<div class="line"><a name="l01633"></a><span class="lineno"> 1633</span>&#160;    globalVal.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a> = globalIm;</div>
<div class="line"><a name="l01634"></a><span class="lineno"> 1634</span>&#160;    <span class="keywordflow">return</span> globalVal;</div>
<div class="line"><a name="l01635"></a><span class="lineno"> 1635</span>&#160;}</div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a398b60c4cb4fa2cf2ffc126de6c08da0"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a398b60c4cb4fa2cf2ffc126de6c08da0">densmatr_mixDepolarising</a></div><div class="ttdeci">void densmatr_mixDepolarising(Qureg qureg, int targetQubit, qreal depolLevel)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00712">QuEST_cpu_distributed.c:712</a></div></div>
<div class="ttc" id="agroup__type_html_gaeff624226629d7063a8a776958a4f991"><div class="ttname"><a href="group__type.html#gaeff624226629d7063a8a776958a4f991">destroyQuESTEnv</a></div><div class="ttdeci">void destroyQuESTEnv(QuESTEnv env)</div><div class="ttdoc">Destroy the QuEST environment.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00174">QuEST_cpu_distributed.c:174</a></div></div>
<div class="ttc" id="amt19937ar_8c_html_ac1283f9b1ed571332f5ffe53545ffc16"><div class="ttname"><a href="mt19937ar_8c.html#ac1283f9b1ed571332f5ffe53545ffc16">init_by_array</a></div><div class="ttdeci">void init_by_array(unsigned long init_key[], int key_length)</div><div class="ttdef"><b>Definition:</b> <a href="mt19937ar_8c_source.html#l00080">mt19937ar.c:80</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a63cb88a5f4eb12fef087435b8db3f8eb"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a63cb88a5f4eb12fef087435b8db3f8eb">statevec_calcProbOfOutcome</a></div><div class="ttdeci">qreal statevec_calcProbOfOutcome(Qureg qureg, int measureQubit, int outcome)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01312">QuEST_cpu_distributed.c:1312</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ae37b3eff5d3affbc1edfe216cabc1c53"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ae37b3eff5d3affbc1edfe216cabc1c53">densmatr_calcProbOfOutcome</a></div><div class="ttdeci">qreal densmatr_calcProbOfOutcome(Qureg qureg, int measureQubit, int outcome)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01328">QuEST_cpu_distributed.c:1328</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_abd509244d57657e148e4084c5ab5d28f"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#abd509244d57657e148e4084c5ab5d28f">statevec_getImagAmp</a></div><div class="ttdeci">qreal statevec_getImagAmp(Qureg qureg, long long int index)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00222">QuEST_cpu_distributed.c:222</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_af3fc7bd149c70f083b149050242cd55e"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#af3fc7bd149c70f083b149050242cd55e">statevec_hadamard</a></div><div class="ttdeci">void statevec_hadamard(Qureg qureg, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01258">QuEST_cpu_distributed.c:1258</a></div></div>
<div class="ttc" id="agroup__debug_html_ga8d31fe2d1ad4d01e2a1f5f6b8bc15b77"><div class="ttname"><a href="group__debug.html#ga8d31fe2d1ad4d01e2a1f5f6b8bc15b77">syncQuESTEnv</a></div><div class="ttdeci">void syncQuESTEnv(QuESTEnv env)</div><div class="ttdoc">Guarantees that all code up to the given point has been executed on all nodes (if running in distribu...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00164">QuEST_cpu_distributed.c:164</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ace1482ef82b83e7f926634a67b322fc4"><div class="ttname"><a href="QuEST__cpu_8c.html#ace1482ef82b83e7f926634a67b322fc4">statevec_controlledNotLocal</a></div><div class="ttdeci">void statevec_controlledNotLocal(Qureg qureg, int controlQubit, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02679">QuEST_cpu.c:2679</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_adb4b0373425b282abed27742d0ce0872"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872">getRotAngle</a></div><div class="ttdeci">static void getRotAngle(int chunkIsUpper, Complex *rot1, Complex *rot2, Complex alpha, Complex beta)</div><div class="ttdoc">Get rotation values for a given chunk.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00272">QuEST_cpu_distributed.c:272</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a45b0916c3e121837f214b64f7424e479"><div class="ttname"><a href="QuEST__cpu_8c.html#a45b0916c3e121837f214b64f7424e479">statevec_pauliYLocal</a></div><div class="ttdeci">void statevec_pauliYLocal(Qureg qureg, int targetQubit, int conjFac)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02887">QuEST_cpu.c:2887</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a6ff3dc624b5fafe8edae4fe327c255a0"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a6ff3dc624b5fafe8edae4fe327c255a0">densmatr_calcInnerProduct</a></div><div class="ttdeci">qreal densmatr_calcInnerProduct(Qureg a, Qureg b)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00455">QuEST_cpu_distributed.c:455</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a939897137596bb73ad7a028d0beaaa10"><div class="ttname"><a href="QuEST__cpu_8c.html#a939897137596bb73ad7a028d0beaaa10">densmatr_calcHilbertSchmidtDistanceSquaredLocal</a></div><div class="ttdeci">qreal densmatr_calcHilbertSchmidtDistanceSquaredLocal(Qureg a, Qureg b)</div><div class="ttdoc">computes Tr((a-b) conjTrans(a-b)) = sum of abs values of (a-b)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00934">QuEST_cpu.c:934</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a2c664d8abca0a6f87c2bf4fe75fbff90"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a2c664d8abca0a6f87c2bf4fe75fbff90">densmatr_calcProbOfAllOutcomes</a></div><div class="ttdeci">void densmatr_calcProbOfAllOutcomes(qreal *retProbs, Qureg qureg, int *qubits, int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01349">QuEST_cpu_distributed.c:1349</a></div></div>
<div class="ttc" id="astructQuESTEnv_html_aa648bb336cf8598467cb62db00b9cee8"><div class="ttname"><a href="structQuESTEnv.html#aa648bb336cf8598467cb62db00b9cee8">QuESTEnv::rank</a></div><div class="ttdeci">int rank</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00364">QuEST.h:364</a></div></div>
<div class="ttc" id="agroup__debug_html_gae53fad7ebafccf236ad62b41e3244214"><div class="ttname"><a href="group__debug.html#gae53fad7ebafccf236ad62b41e3244214">seedQuESTDefault</a></div><div class="ttdeci">void seedQuESTDefault(QuESTEnv *env)</div><div class="ttdoc">Seeds the random number generator with the (master node) current time and process ID.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l01614">QuEST.c:1614</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a73a6c5647862b882f4ed7d83ec3c3e1f"><div class="ttname"><a href="QuEST__cpu_8c.html#a73a6c5647862b882f4ed7d83ec3c3e1f">densmatr_calcProbOfAllOutcomesLocal</a></div><div class="ttdeci">void densmatr_calcProbOfAllOutcomesLocal(qreal *outcomeProbs, Qureg qureg, int *qubits, int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03616">QuEST_cpu.c:3616</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_af0ea25f00987af4c53f17c9cca62ab41"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#af0ea25f00987af4c53f17c9cca62ab41">isChunkToSkipInFindPZero</a></div><div class="ttdeci">static int isChunkToSkipInFindPZero(int chunkId, long long int chunkSize, int measureQubit)</div><div class="ttdoc">Find chunks to skip when calculating probability of qubit being zero.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01303">QuEST_cpu_distributed.c:1303</a></div></div>
<div class="ttc" id="astructQureg_html_aba97773694870ef35e378c036f486bb7"><div class="ttname"><a href="structQureg.html#aba97773694870ef35e378c036f486bb7">Qureg::pairStateVec</a></div><div class="ttdeci">ComplexArray pairStateVec</div><div class="ttdoc">Temporary storage for a chunk of the state vector received from another process in the MPI version.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00343">QuEST.h:343</a></div></div>
<div class="ttc" id="aQuEST__internal_8h_html"><div class="ttname"><a href="QuEST__internal_8h.html">QuEST_internal.h</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a430d98e35f1eae7f0815ac539057cf67"><div class="ttname"><a href="QuEST__cpu_8c.html#a430d98e35f1eae7f0815ac539057cf67">statevec_findProbabilityOfZeroDistributed</a></div><div class="ttdeci">qreal statevec_findProbabilityOfZeroDistributed(Qureg qureg)</div><div class="ttdoc">Measure the probability of a specified qubit being in the zero state across all amplitudes held in th...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03513">QuEST_cpu.c:3513</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a88670d0e7cebe33f61c1dd98daa338b3"><div class="ttname"><a href="QuEST__cpu_8c.html#a88670d0e7cebe33f61c1dd98daa338b3">densmatr_mixDepolarisingDistributed</a></div><div class="ttdeci">void densmatr_mixDepolarisingDistributed(Qureg qureg, int targetQubit, qreal depolLevel)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00230">QuEST_cpu.c:230</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_acabdfbd3184d3ab3bded61e24142b800"><div class="ttname"><a href="QuEST__cpu_8c.html#acabdfbd3184d3ab3bded61e24142b800">densmatr_mixTwoQubitDepolarisingQ1LocalQ2DistributedPart3</a></div><div class="ttdeci">void densmatr_mixTwoQubitDepolarisingQ1LocalQ2DistributedPart3(Qureg qureg, int targetQubit, int qubit2, qreal delta, qreal gamma)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00638">QuEST_cpu.c:638</a></div></div>
<div class="ttc" id="agroup__debug_html_gadc5c01d8ea32e28c188db52be26116b6"><div class="ttname"><a href="group__debug.html#gadc5c01d8ea32e28c188db52be26116b6">getEnvironmentString</a></div><div class="ttdeci">void getEnvironmentString(QuESTEnv env, char str[200])</div><div class="ttdoc">Sets str to a string containing information about the runtime environment, including whether simulati...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00198">QuEST_cpu_distributed.c:198</a></div></div>
<div class="ttc" id="astructQuESTEnv_html_a46e67e1a5ab930e04ff59f83f1d8630d"><div class="ttname"><a href="structQuESTEnv.html#a46e67e1a5ab930e04ff59f83f1d8630d">QuESTEnv::numSeeds</a></div><div class="ttdeci">int numSeeds</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00367">QuEST.h:367</a></div></div>
<div class="ttc" id="aQuEST_8h_html"><div class="ttname"><a href="QuEST_8h.html">QuEST.h</a></div></div>
<div class="ttc" id="astructQureg_html_aa3deb7163aab90a61e755a1f200f5413"><div class="ttname"><a href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">Qureg::numChunks</a></div><div class="ttdeci">int numChunks</div><div class="ttdoc">Number of chunks the state vector is broken up into – the number of MPI processes used.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00338">QuEST.h:338</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_aa6c3f86010ad398f42b0577ea3bb5bcf"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#aa6c3f86010ad398f42b0577ea3bb5bcf">densmatr_calcFidelity</a></div><div class="ttdeci">qreal densmatr_calcFidelity(Qureg qureg, Qureg pureState)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00429">QuEST_cpu_distributed.c:429</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ab5b51a28caa8792a3f0c637409a694b0"><div class="ttname"><a href="QuEST__cpu_8c.html#ab5b51a28caa8792a3f0c637409a694b0">statevec_swapQubitAmpsLocal</a></div><div class="ttdeci">void statevec_swapQubitAmpsLocal(Qureg qureg, int qb1, int qb2)</div><div class="ttdoc">It is ensured that all amplitudes needing to be swapped are on this node.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03922">QuEST_cpu.c:3922</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ab58fe4be895283c2c4eb86ec9af5682e"><div class="ttname"><a href="QuEST__cpu_8c.html#ab58fe4be895283c2c4eb86ec9af5682e">statevec_multiControlledUnitaryDistributed</a></div><div class="ttdeci">void statevec_multiControlledUnitaryDistributed(Qureg qureg, int targetQubit, long long int ctrlQubitsMask, long long int ctrlFlipMask, Complex rot1, Complex rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</div><div class="ttdoc">Apply a unitary operation to a single qubit in the state vector of probability amplitudes,...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02542">QuEST_cpu.c:2542</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ac7d30ce54573c75b35386cd0e284adc5"><div class="ttname"><a href="QuEST__cpu_8c.html#ac7d30ce54573c75b35386cd0e284adc5">statevec_multiControlledMultiQubitNotLocal</a></div><div class="ttdeci">void statevec_multiControlledMultiQubitNotLocal(Qureg qureg, int ctrlMask, int targMask)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02778">QuEST_cpu.c:2778</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a57368529b2a7e76fec423cbfe9980b22"><div class="ttname"><a href="QuEST__cpu_8c.html#a57368529b2a7e76fec423cbfe9980b22">statevec_controlledUnitaryDistributed</a></div><div class="ttdeci">void statevec_controlledUnitaryDistributed(Qureg qureg, int controlQubit, Complex rot1, Complex rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</div><div class="ttdoc">Rotate a single qubit in the state vector of probability amplitudes, given two complex numbers alpha ...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02476">QuEST_cpu.c:2476</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ab02bce0ebbb8f624e8ced8b09b99cdef"><div class="ttname"><a href="QuEST__cpu_8c.html#ab02bce0ebbb8f624e8ced8b09b99cdef">statevec_collapseToKnownProbOutcomeLocal</a></div><div class="ttdeci">void statevec_collapseToKnownProbOutcomeLocal(Qureg qureg, int measureQubit, int outcome, qreal totalProbability)</div><div class="ttdoc">Update the state vector to be consistent with measuring measureQubit=0 if outcome=0 and measureQubit=...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03767">QuEST_cpu.c:3767</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a0fb948ddab4ca210e523aa3c52639df4"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a0fb948ddab4ca210e523aa3c52639df4">statevec_calcExpecDiagonalOp</a></div><div class="ttdeci">Complex statevec_calcExpecDiagonalOp(Qureg qureg, DiagonalOp op)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01600">QuEST_cpu_distributed.c:1600</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a70e3b0a2297c186d5c779af31459b4ca"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a70e3b0a2297c186d5c779af31459b4ca">densmatr_calcExpecDiagonalOp</a></div><div class="ttdeci">Complex densmatr_calcExpecDiagonalOp(Qureg qureg, DiagonalOp op)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01618">QuEST_cpu_distributed.c:1618</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a373394db1bf71b0be63585c0e9a52abb"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">compressPairVectorForTwoQubitDepolarise</a></div><div class="ttdeci">void compressPairVectorForTwoQubitDepolarise(Qureg qureg, int targetQubit, int qubit2)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00624">QuEST_cpu_distributed.c:624</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a5ddfdb22e4704b680d67d08d9e80835b"><div class="ttname"><a href="QuEST__cpu_8c.html#a5ddfdb22e4704b680d67d08d9e80835b">statevec_compactUnitaryLocal</a></div><div class="ttdeci">void statevec_compactUnitaryLocal(Qureg qureg, int targetQubit, Complex alpha, Complex beta)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01754">QuEST_cpu.c:1754</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_af910c7cf2b85bdc2c399cfe8dbfb8b9c"><div class="ttname"><a href="QuEST__cpu_8c.html#af910c7cf2b85bdc2c399cfe8dbfb8b9c">densmatr_calcPurityLocal</a></div><div class="ttdeci">qreal densmatr_calcPurityLocal(Qureg qureg)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00872">QuEST_cpu.c:872</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a16ccb485bcffb328bbd5b2af6977cead"><div class="ttname"><a href="QuEST__cpu_8c.html#a16ccb485bcffb328bbd5b2af6977cead">statevec_calcExpecDiagonalOpLocal</a></div><div class="ttdeci">Complex statevec_calcExpecDiagonalOpLocal(Qureg qureg, DiagonalOp op)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l04124">QuEST_cpu.c:4124</a></div></div>
<div class="ttc" id="astructComplexMatrix4_html"><div class="ttname"><a href="structComplexMatrix4.html">ComplexMatrix4</a></div><div class="ttdoc">Represents a 4x4 matrix of complex numbers.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00175">QuEST.h:175</a></div></div>
<div class="ttc" id="astructQuESTEnv_html"><div class="ttname"><a href="structQuESTEnv.html">QuESTEnv</a></div><div class="ttdoc">Information about the environment the program is running in.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00362">QuEST.h:362</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a0aedcccfa50c7aaa8b7fc4c14d7cdfb8"><div class="ttname"><a href="QuEST__cpu_8c.html#a0aedcccfa50c7aaa8b7fc4c14d7cdfb8">statevec_multiControlledMultiQubitUnitaryLocal</a></div><div class="ttdeci">void statevec_multiControlledMultiQubitUnitaryLocal(Qureg qureg, long long int ctrlMask, int *targs, int numTargs, ComplexMatrixN u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01912">QuEST_cpu.c:1912</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_af8236a00389137b5eff986a40577eaf3"><div class="ttname"><a href="QuEST__cpu_8c.html#af8236a00389137b5eff986a40577eaf3">statevec_multiControlledTwoQubitUnitaryLocal</a></div><div class="ttdeci">void statevec_multiControlledTwoQubitUnitaryLocal(Qureg qureg, long long int ctrlMask, int q1, int q2, ComplexMatrix4 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01813">QuEST_cpu.c:1813</a></div></div>
<div class="ttc" id="astructComplexMatrixN_html"><div class="ttname"><a href="structComplexMatrixN.html">ComplexMatrixN</a></div><div class="ttdoc">Represents a general 2^N by 2^N matrix of complex numbers.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00186">QuEST.h:186</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a464efbd1d7ca5a7b25c83ada001955c2"><div class="ttname"><a href="QuEST__cpu_8c.html#a464efbd1d7ca5a7b25c83ada001955c2">statevec_pauliXDistributed</a></div><div class="ttdeci">void statevec_pauliXDistributed(Qureg qureg, ComplexArray stateVecIn, ComplexArray stateVecOut)</div><div class="ttdoc">Rotate a single qubit by {{0,1},{1,0}.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02651">QuEST_cpu.c:2651</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ae66dc6569c6e4008c33d6739db422c08"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a></div><div class="ttdeci">static int getChunkOuterBlockPairId(int chunkIsUpper, int chunkId, long long int chunkSize, int targetQubit, int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00328">QuEST_cpu_distributed.c:328</a></div></div>
<div class="ttc" id="amt19937ar_8h_html"><div class="ttname"><a href="mt19937ar_8h.html">mt19937ar.h</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_abb2eab4af99adcc59be24f4c91c6f6ad"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#abb2eab4af99adcc59be24f4c91c6f6ad">statevec_controlledNot</a></div><div class="ttdeci">void statevec_controlledNot(Qureg qureg, int controlQubit, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01075">QuEST_cpu_distributed.c:1075</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a95af772d87c461fc8abfd6d47b752ac2"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a95af772d87c461fc8abfd6d47b752ac2">copyVecIntoMatrixPairState</a></div><div class="ttdeci">void copyVecIntoMatrixPairState(Qureg matr, Qureg vec)</div><div class="ttdoc">This copies/clones vec (a statevector) into every node's matr pairState.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00385">QuEST_cpu_distributed.c:385</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a7ebd3198a198f4cd20840f64fd8b84d0"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a7ebd3198a198f4cd20840f64fd8b84d0">statevec_calcInnerProduct</a></div><div class="ttdeci">Complex statevec_calcInnerProduct(Qureg bra, Qureg ket)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00035">QuEST_cpu_distributed.c:35</a></div></div>
<div class="ttc" id="agroup__type_html_ga7740e349b4f8bae6451547680f0ce2d6"><div class="ttname"><a href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a></div><div class="ttdeci">#define qreal</div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a600bda10463e2078ce746ec28f2d39c9"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a600bda10463e2078ce746ec28f2d39c9">statevec_multiControlledUnitary</a></div><div class="ttdeci">void statevec_multiControlledUnitary(Qureg qureg, long long int ctrlQubitsMask, long long int ctrlFlipMask, int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01011">QuEST_cpu_distributed.c:1011</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a81fbd2eccd0d0e5a3cece4df2f96cb92"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a81fbd2eccd0d0e5a3cece4df2f96cb92">statevec_pauliYConj</a></div><div class="ttdeci">void statevec_pauliYConj(Qureg qureg, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01167">QuEST_cpu_distributed.c:1167</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_afb1e220c272754d0773aeccdb613b6b3"><div class="ttname"><a href="QuEST__cpu_8c.html#afb1e220c272754d0773aeccdb613b6b3">statevec_calcProbOfAllOutcomesLocal</a></div><div class="ttdeci">void statevec_calcProbOfAllOutcomesLocal(qreal *outcomeProbs, Qureg qureg, int *qubits, int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03549">QuEST_cpu.c:3549</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a37dae401754961c9100b3c0907913c3e"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a></div><div class="ttdeci">void exchangePairStateVectorHalves(Qureg qureg, int pairRank)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00523">QuEST_cpu_distributed.c:523</a></div></div>
<div class="ttc" id="aQuEST__gpu_8cu_html_ae1b7788cf504ec3d79de3855f97929c7"><div class="ttname"><a href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a></div><div class="ttdeci">__forceinline__ __device__ long long int flipBit(const long long int number, const int bitInd)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__gpu_8cu_source.html#l00095">QuEST_gpu.cu:95</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a4e19ef93d01d7acea32ca646d623aedd"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a4e19ef93d01d7acea32ca646d623aedd">statevec_controlledPauliY</a></div><div class="ttdeci">void statevec_controlledPauliY(Qureg qureg, int controlQubit, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01192">QuEST_cpu_distributed.c:1192</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ab7478fcaf6357ab202d72853b672e375"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a></div><div class="ttdeci">void statevec_swapQubitAmps(Qureg qureg, int qb1, int qb2)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01431">QuEST_cpu_distributed.c:1431</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a7dba097f23f5d48dfdc9f3250444e2e4"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a></div><div class="ttdeci">static int getChunkPairId(int chunkIsUpper, int chunkId, long long int chunkSize, int targetQubit)</div><div class="ttdoc">get position of corresponding chunk, holding values required to update values in my chunk (with chunk...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00317">QuEST_cpu_distributed.c:317</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ae45eefa65f4ecd37bab84fade7cf7f1f"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ae45eefa65f4ecd37bab84fade7cf7f1f">densmatr_calcPurity</a></div><div class="ttdeci">qreal densmatr_calcPurity(Qureg qureg)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01358">QuEST_cpu_distributed.c:1358</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a7ea68e9132ed9db9c242353a33dba2f0"><div class="ttname"><a href="QuEST__cpu_8c.html#a7ea68e9132ed9db9c242353a33dba2f0">statevec_collapseToOutcomeDistributedSetZero</a></div><div class="ttdeci">void statevec_collapseToOutcomeDistributedSetZero(Qureg qureg)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03887">QuEST_cpu.c:3887</a></div></div>
<div class="ttc" id="astructQureg_html_ac2929e681d3d95591c18cf168dbbe4f0"><div class="ttname"><a href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">Qureg::chunkId</a></div><div class="ttdeci">int chunkId</div><div class="ttdoc">The position of the chunk of the state vector held by this process in the full state vector.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00336">QuEST.h:336</a></div></div>
<div class="ttc" id="astructComplexMatrix2_html_a3a2b60a9e00ccef054a6de3b9307c1be"><div class="ttname"><a href="structComplexMatrix2.html#a3a2b60a9e00ccef054a6de3b9307c1be">ComplexMatrix2::imag</a></div><div class="ttdeci">qreal imag[2][2]</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00140">QuEST.h:140</a></div></div>
<div class="ttc" id="aQuEST__cpu__internal_8h_html"><div class="ttname"><a href="QuEST__cpu__internal_8h.html">QuEST_cpu_internal.h</a></div></div>
<div class="ttc" id="astructDiagonalOp_html_a85c3f52533efe831bbe40b9a48602388"><div class="ttname"><a href="structDiagonalOp.html#a85c3f52533efe831bbe40b9a48602388">DiagonalOp::imag</a></div><div class="ttdeci">qreal * imag</div><div class="ttdoc">The imaginary values of the 2^numQubits complex elements.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00310">QuEST.h:310</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_affbd18d7c2ed8d5bd5edb67116501145"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#affbd18d7c2ed8d5bd5edb67116501145">statevec_multiControlledTwoQubitUnitary</a></div><div class="ttdeci">void statevec_multiControlledTwoQubitUnitary(Qureg qureg, long long int ctrlMask, int q1, int q2, ComplexMatrix4 u)</div><div class="ttdoc">This calls swapQubitAmps only when it would involve a distributed communication; if the qubit chunks ...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01458">QuEST_cpu_distributed.c:1458</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a0eb14d48920ea469b0904ae63b47b589"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a0eb14d48920ea469b0904ae63b47b589">compressPairVectorForSingleQubitDepolarise</a></div><div class="ttdeci">void compressPairVectorForSingleQubitDepolarise(Qureg qureg, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00557">QuEST_cpu_distributed.c:557</a></div></div>
<div class="ttc" id="astructQureg_html_ab0ea0358482b62f43fdd781469607d97"><div class="ttname"><a href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">Qureg::numAmpsPerChunk</a></div><div class="ttdeci">long long int numAmpsPerChunk</div><div class="ttdoc">Number of probability amplitudes held in stateVec by this process In the non-MPI version,...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00332">QuEST.h:332</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a3510f01d4d15dcc545564eb84c668cad"><div class="ttname"><a href="QuEST__cpu_8c.html#a3510f01d4d15dcc545564eb84c668cad">densmatr_mixTwoQubitDepolarisingLocal</a></div><div class="ttdeci">void densmatr_mixTwoQubitDepolarisingLocal(Qureg qureg, int qubit1, int qubit2, qreal delta, qreal gamma)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00393">QuEST_cpu.c:393</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a5c9b2f129bdffaaba9857f6eddecbb17"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17">getRotAngleFromUnitaryMatrix</a></div><div class="ttdeci">static void getRotAngleFromUnitaryMatrix(int chunkIsUpper, Complex *rot1, Complex *rot2, ComplexMatrix2 u)</div><div class="ttdoc">Get rotation values for a given chunk given a unitary matrix.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00297">QuEST_cpu_distributed.c:297</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a06fb16aa4af7c54d36052a14d3ad58a7"><div class="ttname"><a href="QuEST__cpu_8c.html#a06fb16aa4af7c54d36052a14d3ad58a7">statevec_controlledPauliYLocal</a></div><div class="ttdeci">void statevec_controlledPauliYLocal(Qureg qureg, int controlQubit, int targetQubit, int conjFac)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02982">QuEST_cpu.c:2982</a></div></div>
<div class="ttc" id="astructQuESTEnv_html_af22aacd7c9905accae28484785c193b4"><div class="ttname"><a href="structQuESTEnv.html#af22aacd7c9905accae28484785c193b4">QuESTEnv::numRanks</a></div><div class="ttdeci">int numRanks</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00365">QuEST.h:365</a></div></div>
<div class="ttc" id="aQuEST__internal_8h_html_a623e577b7230f3c8dc202be6185b4289"><div class="ttname"><a href="QuEST__internal_8h.html#a623e577b7230f3c8dc202be6185b4289">densmatr_mixTwoQubitDephasing</a></div><div class="ttdeci">void densmatr_mixTwoQubitDephasing(Qureg qureg, int qubit1, int qubit2, qreal dephase)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00090">QuEST_cpu.c:90</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a0a7a35628b1c1eb47336deb9afda5b68"><div class="ttname"><a href="QuEST__cpu_8c.html#a0a7a35628b1c1eb47336deb9afda5b68">statevec_compactUnitaryDistributed</a></div><div class="ttdeci">void statevec_compactUnitaryDistributed(Qureg qureg, Complex rot1, Complex rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</div><div class="ttdoc">Rotate a single qubit in the state vector of probability amplitudes, given two complex numbers alpha ...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02095">QuEST_cpu.c:2095</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a6153547f245c05874161a105e9a2f02c"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a6153547f245c05874161a105e9a2f02c">densmatr_calcTotalProb</a></div><div class="ttdeci">qreal densmatr_calcTotalProb(Qureg qureg)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00053">QuEST_cpu_distributed.c:53</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ae01c3eb75fd32de1a7e1dbc7a33a21e3"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a></div><div class="ttdeci">void exchangeStateVectors(Qureg qureg, int pairRank)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00493">QuEST_cpu_distributed.c:493</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ab19f28e68330da68ea3caa2bdef32da9"><div class="ttname"><a href="QuEST__cpu_8c.html#ab19f28e68330da68ea3caa2bdef32da9">statevec_multiControlledUnitaryLocal</a></div><div class="ttdeci">void statevec_multiControlledUnitaryLocal(Qureg qureg, int targetQubit, long long int ctrlQubitsMask, long long int ctrlFlipMask, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02268">QuEST_cpu.c:2268</a></div></div>
<div class="ttc" id="aQuEST__common_8c_html_acc45bb8300922ea5933e294921e25ea2"><div class="ttname"><a href="QuEST__common_8c.html#acc45bb8300922ea5933e294921e25ea2">getQubitBitMask</a></div><div class="ttdeci">long long int getQubitBitMask(int *qubits, int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__common_8c_source.html#l00050">QuEST_common.c:50</a></div></div>
<div class="ttc" id="astructDiagonalOp_html"><div class="ttname"><a href="structDiagonalOp.html">DiagonalOp</a></div><div class="ttdoc">Represents a diagonal complex operator on the full Hilbert state of a Qureg.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00297">QuEST.h:297</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a1c82b5e914a8a39c5c7b782dbc16fa76"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a1c82b5e914a8a39c5c7b782dbc16fa76">statevec_pauliX</a></div><div class="ttdeci">void statevec_pauliX(Qureg qureg, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01048">QuEST_cpu_distributed.c:1048</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a0f562af6cb665a8a7a3f80e9449734d5"><div class="ttname"><a href="QuEST__cpu_8c.html#a0f562af6cb665a8a7a3f80e9449734d5">statevec_pauliYDistributed</a></div><div class="ttdeci">void statevec_pauliYDistributed(Qureg qureg, ComplexArray stateVecIn, ComplexArray stateVecOut, int updateUpper, int conjFac)</div><div class="ttdoc">Rotate a single qubit by +-{{0,-i},{i,0}.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02945">QuEST_cpu.c:2945</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a8d9c19a3424f0ad89bfbfd920d65301d"><div class="ttname"><a href="QuEST__cpu_8c.html#a8d9c19a3424f0ad89bfbfd920d65301d">densmatr_mixDampingDistributed</a></div><div class="ttdeci">void densmatr_mixDampingDistributed(Qureg qureg, int targetQubit, qreal damping)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00306">QuEST_cpu.c:306</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_aeb4453a2e609e5359d2995bccf6663ca"><div class="ttname"><a href="QuEST__cpu_8c.html#aeb4453a2e609e5359d2995bccf6663ca">densmatr_calcExpecDiagonalOpLocal</a></div><div class="ttdeci">Complex densmatr_calcExpecDiagonalOpLocal(Qureg qureg, DiagonalOp op)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l04167">QuEST_cpu.c:4167</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_aa987d1e0ba97da2ca540194356dd62de"><div class="ttname"><a href="QuEST__cpu_8c.html#aa987d1e0ba97da2ca540194356dd62de">statevec_pauliXLocal</a></div><div class="ttdeci">void statevec_pauliXLocal(Qureg qureg, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02593">QuEST_cpu.c:2593</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a1b36518c8fbbc3a5084bb4ad1fb05ea5"><div class="ttname"><a href="QuEST__cpu_8c.html#a1b36518c8fbbc3a5084bb4ad1fb05ea5">densmatr_initPureStateLocal</a></div><div class="ttdeci">void densmatr_initPureStateLocal(Qureg targetQureg, Qureg copyQureg)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01195">QuEST_cpu.c:1195</a></div></div>
<div class="ttc" id="aQuEST__gpu_8cu_html_aec1852e1a8e70d3690919ce8ab551ba0"><div class="ttname"><a href="QuEST__gpu_8cu.html#aec1852e1a8e70d3690919ce8ab551ba0">extractBit</a></div><div class="ttdeci">__forceinline__ __device__ int extractBit(const int locationOfBitFromRight, const long long int theEncodedNumber)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__gpu_8cu_source.html#l00082">QuEST_gpu.cu:82</a></div></div>
<div class="ttc" id="astructQuESTEnv_html_a66feaa60d3adc7dcf6f8b66514989356"><div class="ttname"><a href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">QuESTEnv::seeds</a></div><div class="ttdeci">unsigned long int * seeds</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00366">QuEST.h:366</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ab124a3a9956046bf9c0e1e3ae9171f42"><div class="ttname"><a href="QuEST__cpu_8c.html#ab124a3a9956046bf9c0e1e3ae9171f42">densmatr_mixDampingLocal</a></div><div class="ttdeci">void densmatr_mixDampingLocal(Qureg qureg, int targetQubit, qreal damping)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00180">QuEST_cpu.c:180</a></div></div>
<div class="ttc" id="astructQureg_html"><div class="ttname"><a href="structQureg.html">Qureg</a></div><div class="ttdoc">Represents a system of qubits.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00322">QuEST.h:322</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ac501fe7b9d331be48359ce1546348f97"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ac501fe7b9d331be48359ce1546348f97">densmatr_mixDamping</a></div><div class="ttdeci">void densmatr_mixDamping(Qureg qureg, int targetQubit, qreal damping)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00739">QuEST_cpu_distributed.c:739</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a08392b1b27d10e3b8a8648a5afeaa629"><div class="ttname"><a href="QuEST__cpu_8c.html#a08392b1b27d10e3b8a8648a5afeaa629">densmatr_calcInnerProductLocal</a></div><div class="ttdeci">qreal densmatr_calcInnerProductLocal(Qureg a, Qureg b)</div><div class="ttdoc">computes Tr(conjTrans(a) b) = sum of (a_ij^* b_ij)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00969">QuEST_cpu.c:969</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a28be36627b2dd9a0da63dd6f60121b06"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a28be36627b2dd9a0da63dd6f60121b06">getChunkIdFromIndex</a></div><div class="ttdeci">static int getChunkIdFromIndex(Qureg qureg, long long int index)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00208">QuEST_cpu_distributed.c:208</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ae6f0c9ed9261afbab4712e056a88763d"><div class="ttname"><a href="QuEST__cpu_8c.html#ae6f0c9ed9261afbab4712e056a88763d">statevec_multiControlledMultiQubitNotDistributed</a></div><div class="ttdeci">void statevec_multiControlledMultiQubitNotDistributed(Qureg qureg, int ctrlMask, int targMask, ComplexArray stateVecIn, ComplexArray stateVecOut)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02834">QuEST_cpu.c:2834</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a43afa97e300b87bce7f3eb1213eb05f6"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a43afa97e300b87bce7f3eb1213eb05f6">densmatr_mixTwoQubitDepolarising</a></div><div class="ttdeci">void densmatr_mixTwoQubitDepolarising(Qureg qureg, int qubit1, int qubit2, qreal depolLevel)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00766">QuEST_cpu_distributed.c:766</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a0ce2c2fd54df25495e99dc5b95bed4b2"><div class="ttname"><a href="QuEST__cpu_8c.html#a0ce2c2fd54df25495e99dc5b95bed4b2">statevec_unitaryDistributed</a></div><div class="ttdeci">void statevec_unitaryDistributed(Qureg qureg, Complex rot1, Complex rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</div><div class="ttdoc">Apply a unitary operation to a single qubit given a subset of the state vector with upper and lower b...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02151">QuEST_cpu.c:2151</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a071baf8b6951d2a7d6529394b6f39364"><div class="ttname"><a href="QuEST__cpu_8c.html#a071baf8b6951d2a7d6529394b6f39364">statevec_controlledCompactUnitaryDistributed</a></div><div class="ttdeci">void statevec_controlledCompactUnitaryDistributed(Qureg qureg, int controlQubit, Complex rot1, Complex rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</div><div class="ttdoc">Rotate a single qubit in the state vector of probability amplitudes, given two complex numbers alpha ...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02414">QuEST_cpu.c:2414</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ae5ad68d054875913d0f7ec654840a9ec"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ae5ad68d054875913d0f7ec654840a9ec">densmatr_initPureState</a></div><div class="ttdeci">void densmatr_initPureState(Qureg targetQureg, Qureg copyQureg)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00466">QuEST_cpu_distributed.c:466</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a076fe6125da4d6037b8bc4d912df4015"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015">densityMatrixBlockFitsInChunk</a></div><div class="ttdeci">static int densityMatrixBlockFitsInChunk(long long int chunkSize, int numQubits, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00377">QuEST_cpu_distributed.c:377</a></div></div>
<div class="ttc" id="aQuEST__precision_8h_html"><div class="ttname"><a href="QuEST__precision_8h.html">QuEST_precision.h</a></div></div>
<div class="ttc" id="astructQureg_html_a441e4cacef6bd17adb9813c7442d42fe"><div class="ttname"><a href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">Qureg::stateVec</a></div><div class="ttdeci">ComplexArray stateVec</div><div class="ttdoc">Computational state amplitudes - a subset thereof in the MPI version.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00341">QuEST.h:341</a></div></div>
<div class="ttc" id="astructComplexMatrix2_html_a3ea98d545b67a190ee6abe936c72076f"><div class="ttname"><a href="structComplexMatrix2.html#a3ea98d545b67a190ee6abe936c72076f">ComplexMatrix2::real</a></div><div class="ttdeci">qreal real[2][2]</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00139">QuEST.h:139</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_aec63559e8b9ab0e17efe18d64d2ceca6"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#aec63559e8b9ab0e17efe18d64d2ceca6">statevec_compactUnitary</a></div><div class="ttdeci">void statevec_compactUnitary(Qureg qureg, int targetQubit, Complex alpha, Complex beta)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00858">QuEST_cpu_distributed.c:858</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ab750fb47da2fca9849c678c869e40e69"><div class="ttname"><a href="QuEST__cpu_8c.html#ab750fb47da2fca9849c678c869e40e69">densmatr_mixDepolarisingLocal</a></div><div class="ttdeci">void densmatr_mixDepolarisingLocal(Qureg qureg, int targetQubit, qreal depolLevel)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00131">QuEST_cpu.c:131</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ad09bb76ad67581b03ab176832cca37cf"><div class="ttname"><a href="QuEST__cpu_8c.html#ad09bb76ad67581b03ab176832cca37cf">statevec_collapseToKnownProbOutcomeDistributedRenorm</a></div><div class="ttdeci">void statevec_collapseToKnownProbOutcomeDistributedRenorm(Qureg qureg, int measureQubit, qreal totalProbability)</div><div class="ttdoc">Renormalise parts of the state vector where measureQubit=0 or 1, based on the total probability of th...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03849">QuEST_cpu.c:3849</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a0acfe30083d0bc2a84da196378a36122"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a0acfe30083d0bc2a84da196378a36122">statevec_multiControlledMultiQubitUnitary</a></div><div class="ttdeci">void statevec_multiControlledMultiQubitUnitary(Qureg qureg, long long int ctrlMask, int *targs, int numTargs, ComplexMatrixN u)</div><div class="ttdoc">This calls swapQubitAmps only when it would involve a distributed communication; if the qubit chunks ...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01514">QuEST_cpu_distributed.c:1514</a></div></div>
<div class="ttc" id="astructDiagonalOp_html_a2c6eab631ef48b4978db026c98180eee"><div class="ttname"><a href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">DiagonalOp::numElemsPerChunk</a></div><div class="ttdeci">long long int numElemsPerChunk</div><div class="ttdoc">The number of the 2^numQubits amplitudes stored on each distributed node.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00302">QuEST.h:302</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a4d043bb0cee54a5f94faf3ffc34a6790"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a></div><div class="ttdeci">static int halfMatrixBlockFitsInChunk(long long int chunkSize, int targetQubit)</div><div class="ttdoc">return whether the current qubit rotation will use blocks that fit within a single chunk.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00370">QuEST_cpu_distributed.c:370</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a78cf98ea535790bc46069b60bae342c7"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a78cf98ea535790bc46069b60bae342c7">statevec_calcProbOfAllOutcomes</a></div><div class="ttdeci">void statevec_calcProbOfAllOutcomes(qreal *retProbs, Qureg qureg, int *qubits, int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01340">QuEST_cpu_distributed.c:1340</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a86dbcc3db99294add9964741e19fbdab"><div class="ttname"><a href="QuEST__cpu_8c.html#a86dbcc3db99294add9964741e19fbdab">statevec_hadamardLocal</a></div><div class="ttdeci">void statevec_hadamardLocal(Qureg qureg, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03078">QuEST_cpu.c:3078</a></div></div>
<div class="ttc" id="agroup__debug_html_gaf8a14ae79c3fb2c0b5f6255cc37bebf9"><div class="ttname"><a href="group__debug.html#gaf8a14ae79c3fb2c0b5f6255cc37bebf9">reportQuESTEnv</a></div><div class="ttdeci">void reportQuESTEnv(QuESTEnv env)</div><div class="ttdoc">Report information about the QuEST environment.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00183">QuEST_cpu_distributed.c:183</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_afa58cf7cb98a25ab33621120c5c330d0"><div class="ttname"><a href="QuEST__cpu_8c.html#afa58cf7cb98a25ab33621120c5c330d0">densmatr_applyDiagonalOpLocal</a></div><div class="ttdeci">void densmatr_applyDiagonalOpLocal(Qureg qureg, DiagonalOp op)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l04082">QuEST_cpu.c:4082</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a903beb4f5d8753a964ce2dc5f9096a24"><div class="ttname"><a href="QuEST__cpu_8c.html#a903beb4f5d8753a964ce2dc5f9096a24">statevec_controlledUnitaryLocal</a></div><div class="ttdeci">void statevec_controlledUnitaryLocal(Qureg qureg, int controlQubit, int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02336">QuEST_cpu.c:2336</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_aedd7ecccf2f09dd2f1c5d191950b51e6"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#aedd7ecccf2f09dd2f1c5d191950b51e6">densmatr_applyDiagonalOp</a></div><div class="ttdeci">void densmatr_applyDiagonalOp(Qureg qureg, DiagonalOp op)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01594">QuEST_cpu_distributed.c:1594</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a4f243eb101c8e63f16cfd50300364cb7"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a4f243eb101c8e63f16cfd50300364cb7">getGlobalIndOfOddParityInChunk</a></div><div class="ttdeci">long long int getGlobalIndOfOddParityInChunk(Qureg qureg, int qb1, int qb2)</div><div class="ttdoc">returns -1 if this node contains no amplitudes where qb1 and qb2 have opposite parity,...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01412">QuEST_cpu_distributed.c:1412</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ae90f82418e0aa67218d733dbbc681998"><div class="ttname"><a href="QuEST__cpu_8c.html#ae90f82418e0aa67218d733dbbc681998">densmatr_mixTwoQubitDepolarisingLocalPart1</a></div><div class="ttdeci">void densmatr_mixTwoQubitDepolarisingLocalPart1(Qureg qureg, int qubit1, int qubit2, qreal delta)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00494">QuEST_cpu.c:494</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_aefba328e047e6ef4fd1ae4b56901aaa7"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#aefba328e047e6ef4fd1ae4b56901aaa7">copyDiagOpIntoMatrixPairState</a></div><div class="ttdeci">void copyDiagOpIntoMatrixPairState(Qureg qureg, DiagonalOp op)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01559">QuEST_cpu_distributed.c:1559</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a393da4c4bc582a757ca8406d8501aca0"><div class="ttname"><a href="QuEST__cpu_8c.html#a393da4c4bc582a757ca8406d8501aca0">statevec_controlledNotDistributed</a></div><div class="ttdeci">void statevec_controlledNotDistributed(Qureg qureg, int controlQubit, ComplexArray stateVecIn, ComplexArray stateVecOut)</div><div class="ttdoc">Rotate a single qubit by {{0,1},{1,0}.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02742">QuEST_cpu.c:2742</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a1275d604674224d87a173fb5bac78835"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a1275d604674224d87a173fb5bac78835">statevec_controlledCompactUnitary</a></div><div class="ttdeci">void statevec_controlledCompactUnitary(Qureg qureg, int controlQubit, int targetQubit, Complex alpha, Complex beta)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00934">QuEST_cpu_distributed.c:934</a></div></div>
<div class="ttc" id="astructQureg_html_ad08dff5316b8937f4b2a1417591543dc"><div class="ttname"><a href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">Qureg::numQubitsRepresented</a></div><div class="ttdeci">int numQubitsRepresented</div><div class="ttdoc">The number of qubits represented in either the state-vector or density matrix.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00327">QuEST.h:327</a></div></div>
<div class="ttc" id="aQuEST__validation_8h_html"><div class="ttname"><a href="QuEST__validation_8h.html">QuEST_validation.h</a></div></div>
<div class="ttc" id="agroup__debug_html_gac7e38d768a1bd79019f88cc1e6295092"><div class="ttname"><a href="group__debug.html#gac7e38d768a1bd79019f88cc1e6295092">syncQuESTSuccess</a></div><div class="ttdeci">int syncQuESTSuccess(int successCode)</div><div class="ttdoc">Performs a logical AND on all successCodes held by all processes.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00168">QuEST_cpu_distributed.c:168</a></div></div>
<div class="ttc" id="astructDiagonalOp_html_a1d66088bed235d524cd452b107694d5c"><div class="ttname"><a href="structDiagonalOp.html#a1d66088bed235d524cd452b107694d5c">DiagonalOp::real</a></div><div class="ttdeci">qreal * real</div><div class="ttdoc">The real values of the 2^numQubits complex elements.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00308">QuEST.h:308</a></div></div>
<div class="ttc" id="astructComplex_html_ab5b2e2eca02131fc74b289a83636cbe3"><div class="ttname"><a href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">Complex::real</a></div><div class="ttdeci">qreal real</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00105">QuEST.h:105</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_abe74a5a9db8340e37b80fbc77338894d"><div class="ttname"><a href="QuEST__cpu_8c.html#abe74a5a9db8340e37b80fbc77338894d">statevec_swapQubitAmpsDistributed</a></div><div class="ttdeci">void statevec_swapQubitAmpsDistributed(Qureg qureg, int pairRank, int qb1, int qb2)</div><div class="ttdoc">qureg.pairStateVec contains the entire set of amplitudes of the paired node which includes the set of...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03965">QuEST_cpu.c:3965</a></div></div>
<div class="ttc" id="astructComplex_html_a84f5439aad0ef495efdd3b4c1c02d27e"><div class="ttname"><a href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">Complex::imag</a></div><div class="ttdeci">qreal imag</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00106">QuEST.h:106</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ab1ec7f241b68b079c8e316d190af49ce"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ab1ec7f241b68b079c8e316d190af49ce">getChunkOuterBlockPairIdForPart3</a></div><div class="ttdeci">static int getChunkOuterBlockPairIdForPart3(int chunkIsUpperSmallerQubit, int chunkIsUpperBiggerQubit, int chunkId, long long int chunkSize, int smallerQubit, int biggerQubit, int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00339">QuEST_cpu_distributed.c:339</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a2f76ec8f08e19bb8e1254aafb10e160e"><div class="ttname"><a href="QuEST__cpu_8c.html#a2f76ec8f08e19bb8e1254aafb10e160e">densmatr_mixTwoQubitDepolarisingDistributed</a></div><div class="ttdeci">void densmatr_mixTwoQubitDepolarisingDistributed(Qureg qureg, int targetQubit, int qubit2, qreal delta, qreal gamma)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00547">QuEST_cpu.c:547</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_aafc398f8f479fcc066a2dea700235635"><div class="ttname"><a href="QuEST__cpu_8c.html#aafc398f8f479fcc066a2dea700235635">statevec_unitaryLocal</a></div><div class="ttdeci">void statevec_unitaryLocal(Qureg qureg, int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02026">QuEST_cpu.c:2026</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ad65ad1b5ea6f30b0c6b4ffda96e1a8e6"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ad65ad1b5ea6f30b0c6b4ffda96e1a8e6">statevec_calcTotalProb</a></div><div class="ttdeci">qreal statevec_calcTotalProb(Qureg qureg)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00088">QuEST_cpu_distributed.c:88</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a8bea931504c90d9bd97e74645667804e"><div class="ttname"><a href="QuEST__cpu_8c.html#a8bea931504c90d9bd97e74645667804e">densmatr_findProbabilityOfZeroLocal</a></div><div class="ttdeci">qreal densmatr_findProbabilityOfZeroLocal(Qureg qureg, int measureQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03402">QuEST_cpu.c:3402</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_aa3c2d644a2be7f0d3aa9f757527d306f"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a></div><div class="ttdeci">static int chunkIsUpperInOuterBlock(int chunkId, long long int chunkSize, int targetQubit, int numQubits)</div><div class="ttdoc">fix – do with masking instead</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00250">QuEST_cpu_distributed.c:250</a></div></div>
<div class="ttc" id="aQuEST__validation_8c_html_ad893327ebd2123508493d445868bfcd7"><div class="ttname"><a href="QuEST__validation_8c.html#ad893327ebd2123508493d445868bfcd7">validateNumRanks</a></div><div class="ttdeci">void validateNumRanks(int numRanks, const char *caller)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__validation_8c_source.html#l00335">QuEST_validation.c:335</a></div></div>
<div class="ttc" id="agroup__debug_html_ga555451c697ea4a9d27389155f68fdabc"><div class="ttname"><a href="group__debug.html#ga555451c697ea4a9d27389155f68fdabc">seedQuEST</a></div><div class="ttdeci">void seedQuEST(QuESTEnv *env, unsigned long int *seedArray, int numSeeds)</div><div class="ttdoc">Seeds the random number generator with a custom array of key(s), overriding the default keys.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01388">QuEST_cpu_distributed.c:1388</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a8c9da88f734b0862f4cce7d819e6d3b5"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a8c9da88f734b0862f4cce7d819e6d3b5">densmatr_calcHilbertSchmidtDistance</a></div><div class="ttdeci">qreal densmatr_calcHilbertSchmidtDistance(Qureg a, Qureg b)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00444">QuEST_cpu_distributed.c:444</a></div></div>
<div class="ttc" id="astructComplex_html"><div class="ttname"><a href="structComplex.html">Complex</a></div><div class="ttdoc">Represents one complex number.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00103">QuEST.h:103</a></div></div>
<div class="ttc" id="agroup__type_html_ga8ba2c3388dd64d9348c3b091852d36d4"><div class="ttname"><a href="group__type.html#ga8ba2c3388dd64d9348c3b091852d36d4">createQuESTEnv</a></div><div class="ttdeci">QuESTEnv createQuESTEnv(void)</div><div class="ttdoc">Create the QuEST execution environment.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00129">QuEST_cpu_distributed.c:129</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_abea6570b95fdfa102511ccd1fcb30685"><div class="ttname"><a href="QuEST__cpu_8c.html#abea6570b95fdfa102511ccd1fcb30685">statevec_hadamardDistributed</a></div><div class="ttdeci">void statevec_hadamardDistributed(Qureg qureg, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut, int updateUpper)</div><div class="ttdoc">Rotate a single qubit by {{1,1},{1,-1}}/sqrt2.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03139">QuEST_cpu.c:3139</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a13ecc24b355a5213d745651cde56bd71"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a13ecc24b355a5213d745651cde56bd71">statevec_multiControlledMultiQubitNot</a></div><div class="ttdeci">void statevec_multiControlledMultiQubitNot(Qureg qureg, int ctrlMask, int targMask)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01097">QuEST_cpu_distributed.c:1097</a></div></div>
<div class="ttc" id="aQuEST__cpu__internal_8h_html_ae94d012c3da6c84599e99f6afea81f5f"><div class="ttname"><a href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a></div><div class="ttdeci">static int maskContainsBit(const long long int mask, const int bitInd)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__internal_8h_source.html#l00034">QuEST_cpu_internal.h:34</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_abc9a9ef4344c7faaaf28ac25c76649b9"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#abc9a9ef4344c7faaaf28ac25c76649b9">statevec_getRealAmp</a></div><div class="ttdeci">qreal statevec_getRealAmp(Qureg qureg, long long int index)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00212">QuEST_cpu_distributed.c:212</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_af1cca787f3b0e0c91ffb2495f9ad8d5a"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#af1cca787f3b0e0c91ffb2495f9ad8d5a">statevec_pauliY</a></div><div class="ttdeci">void statevec_pauliY(Qureg qureg, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01142">QuEST_cpu_distributed.c:1142</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_add9ca9956cdd81ed5d0b0f66168c04a3"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#add9ca9956cdd81ed5d0b0f66168c04a3">statevec_controlledUnitary</a></div><div class="ttdeci">void statevec_controlledUnitary(Qureg qureg, int controlQubit, int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00972">QuEST_cpu_distributed.c:972</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a790add229738945812ae2048c03d58ec"><div class="ttname"><a href="QuEST__cpu_8c.html#a790add229738945812ae2048c03d58ec">statevec_controlledPauliYDistributed</a></div><div class="ttdeci">void statevec_controlledPauliYDistributed(Qureg qureg, int controlQubit, ComplexArray stateVecIn, ComplexArray stateVecOut, int conjFac)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03036">QuEST_cpu.c:3036</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a215e2d6f88dbecc0b408b3573b5e144f"><div class="ttname"><a href="QuEST__cpu_8c.html#a215e2d6f88dbecc0b408b3573b5e144f">statevec_controlledCompactUnitaryLocal</a></div><div class="ttdeci">void statevec_controlledCompactUnitaryLocal(Qureg qureg, int controlQubit, int targetQubit, Complex alpha, Complex beta)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02196">QuEST_cpu.c:2196</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a0552889d6f57d9e0ed8b209bf426482d"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a></div><div class="ttdeci">static int chunkIsUpper(int chunkId, long long int chunkSize, int targetQubit)</div><div class="ttdoc">Returns whether a given chunk in position chunkId is in the upper or lower half of a block.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00241">QuEST_cpu_distributed.c:241</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a4a2fa262d3f0dba372797b9bd35d9fa5"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a4a2fa262d3f0dba372797b9bd35d9fa5">statevec_controlledPauliYConj</a></div><div class="ttdeci">void statevec_controlledPauliYConj(Qureg qureg, int controlQubit, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01225">QuEST_cpu_distributed.c:1225</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a6fbb3b693f25dde1e9e3dc87dc1984f7"><div class="ttname"><a href="QuEST__cpu_8c.html#a6fbb3b693f25dde1e9e3dc87dc1984f7">statevec_calcInnerProductLocal</a></div><div class="ttdeci">Complex statevec_calcInnerProductLocal(Qureg bra, Qureg ket)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01082">QuEST_cpu.c:1082</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ab07dc84ee1f2034482f1c186576434be"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ab07dc84ee1f2034482f1c186576434be">statevec_collapseToKnownProbOutcome</a></div><div class="ttdeci">void statevec_collapseToKnownProbOutcome(Qureg qureg, int measureQubit, int outcome, qreal totalStateProb)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01368">QuEST_cpu_distributed.c:1368</a></div></div>
<div class="ttc" id="astructComplexMatrix2_html"><div class="ttname"><a href="structComplexMatrix2.html">ComplexMatrix2</a></div><div class="ttdoc">Represents a 2x2 matrix of complex numbers.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00137">QuEST.h:137</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ac3735bd959600e57b2ee3a105666cddf"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ac3735bd959600e57b2ee3a105666cddf">statevec_unitary</a></div><div class="ttdeci">void statevec_unitary(Qureg qureg, int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00895">QuEST_cpu_distributed.c:895</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a7772f97cb4d92a9825bf3b7c82c3230c"><div class="ttname"><a href="QuEST__cpu_8c.html#a7772f97cb4d92a9825bf3b7c82c3230c">densmatr_calcFidelityLocal</a></div><div class="ttdeci">qreal densmatr_calcFidelityLocal(Qureg qureg, Qureg pureState)</div><div class="ttdoc">computes a few dens-columns-worth of (vec^*T) dens * vec</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01001">QuEST_cpu.c:1001</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a8535bc15c2ff249ddddb3fde6eff1490"><div class="ttname"><a href="QuEST__cpu_8c.html#a8535bc15c2ff249ddddb3fde6eff1490">statevec_findProbabilityOfZeroLocal</a></div><div class="ttdeci">qreal statevec_findProbabilityOfZeroLocal(Qureg qureg, int measureQubit)</div><div class="ttdoc">Measure the total probability of a specified qubit being in the zero state across all amplitudes in t...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03457">QuEST_cpu.c:3457</a></div></div>
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