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QuEST__precision_8h_source.html
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<a href="QuEST__precision_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <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>  </div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor"># include <math.h></span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>  </div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor"># ifndef QUEST_PRECISION_H</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor"># define QUEST_PRECISION_H</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  </div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">// set default double precision if not set during compilation</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor"># ifndef QuEST_PREC</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor"># define QuEST_PREC 2</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  </div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * Single precision, which uses 4 bytes per amplitude component</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor"># if QuEST_PREC==1</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor"> # define qreal float</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="comment">// \cond HIDDEN_SYMBOLS </span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor"> # define MPI_QuEST_REAL MPI_FLOAT</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor"> # define MPI_MAX_AMPS_IN_MSG (1LL<<29) // must be 2^int</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor"> # define REAL_STRING_FORMAT "%.8f"</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor"> # define REAL_QASM_FORMAT "%.8g"</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor"> # define REAL_EPS 1e-5</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor"> # define REAL_SPECIFIER "%f"</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor"> # define absReal(X) fabs(X) // not fabsf(X) - better to return doubles where possible</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="comment">// \endcond</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * Double precision, which uses 8 bytes per amplitude component</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor"># elif QuEST_PREC==2</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor"> # define qreal double</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="comment">// \cond HIDDEN_SYMBOLS </span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor"> # define MPI_QuEST_REAL MPI_DOUBLE</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor"> # define MPI_MAX_AMPS_IN_MSG (1LL<<28) // must be 2^int</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor"> # define REAL_STRING_FORMAT "%.14f"</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor"> # define REAL_QASM_FORMAT "%.14g"</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor"> # define REAL_EPS 1e-13</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor"> # define REAL_SPECIFIER "%lf"</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor"> # define absReal(X) fabs(X)</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">// \endcond</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> * Quad precision, which uses 16 bytes per amplitude component.</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> * This is not compatible with most GPUs.</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor"># elif QuEST_PREC==4</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="preprocessor"> # define qreal long double</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="comment">// \cond HIDDEN_SYMBOLS </span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor"> # define MPI_QuEST_REAL MPI_LONG_DOUBLE</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="preprocessor"> # define MPI_MAX_AMPS_IN_MSG (1LL<<27) // must be 2^int</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="preprocessor"> # define REAL_STRING_FORMAT "%.17Lf"</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor"> # define REAL_QASM_FORMAT "%.17Lg"</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor"> # define REAL_EPS 1e-14</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="preprocessor"> # define REAL_SPECIFIER "%Lf"</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="preprocessor"> # define absReal(X) fabsl(X)</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">// \endcond</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment">// the maximum number of qubit registers which can be passed to functions like applyMultiArbitraryPhaseOverrides()</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"><a class="line" href="QuEST__precision_8h.html#a6698ce2a3971003a0a0289e5980d39c5"> 72</a></span> <span class="preprocessor"># define MAX_NUM_REGS_APPLY_ARBITRARY_PHASE 100</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  </div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  </div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="preprocessor"># endif // QUEST_PRECISION_H</span></div>
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