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QuEST__cpu__internal_8h.html
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<div class="textblock"><code>#include "<a class="el" href="QuEST__precision_8h_source.html">QuEST_precision.h</a>"</code><br />
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:afa58cf7cb98a25ab33621120c5c330d0"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#afa58cf7cb98a25ab33621120c5c330d0">densmatr_applyDiagonalOpLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, <a class="el" href="structDiagonalOp.html">DiagonalOp</a> op)</td></tr>
<tr class="separator:afa58cf7cb98a25ab33621120c5c330d0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aeb4453a2e609e5359d2995bccf6663ca"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structComplex.html">Complex</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#aeb4453a2e609e5359d2995bccf6663ca">densmatr_calcExpecDiagonalOpLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, <a class="el" href="structDiagonalOp.html">DiagonalOp</a> op)</td></tr>
<tr class="separator:aeb4453a2e609e5359d2995bccf6663ca"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a7772f97cb4d92a9825bf3b7c82c3230c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a7772f97cb4d92a9825bf3b7c82c3230c">densmatr_calcFidelityLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, <a class="el" href="structQureg.html">Qureg</a> pureState)</td></tr>
<tr class="memdesc:a7772f97cb4d92a9825bf3b7c82c3230c"><td class="mdescLeft"> </td><td class="mdescRight">computes a few dens-columns-worth of (vec^*T) dens * vec <a href="QuEST__cpu__internal_8h.html#a7772f97cb4d92a9825bf3b7c82c3230c">More...</a><br /></td></tr>
<tr class="separator:a7772f97cb4d92a9825bf3b7c82c3230c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a939897137596bb73ad7a028d0beaaa10"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a939897137596bb73ad7a028d0beaaa10">densmatr_calcHilbertSchmidtDistanceSquaredLocal</a> (<a class="el" href="structQureg.html">Qureg</a> a, <a class="el" href="structQureg.html">Qureg</a> b)</td></tr>
<tr class="memdesc:a939897137596bb73ad7a028d0beaaa10"><td class="mdescLeft"> </td><td class="mdescRight">computes Tr((a-b) conjTrans(a-b)) = sum of abs values of (a-b) <a href="QuEST__cpu__internal_8h.html#a939897137596bb73ad7a028d0beaaa10">More...</a><br /></td></tr>
<tr class="separator:a939897137596bb73ad7a028d0beaaa10"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a08392b1b27d10e3b8a8648a5afeaa629"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a08392b1b27d10e3b8a8648a5afeaa629">densmatr_calcInnerProductLocal</a> (<a class="el" href="structQureg.html">Qureg</a> a, <a class="el" href="structQureg.html">Qureg</a> b)</td></tr>
<tr class="memdesc:a08392b1b27d10e3b8a8648a5afeaa629"><td class="mdescLeft"> </td><td class="mdescRight">computes Tr(conjTrans(a) b) = sum of (a_ij^* b_ij) <a href="QuEST__cpu__internal_8h.html#a08392b1b27d10e3b8a8648a5afeaa629">More...</a><br /></td></tr>
<tr class="separator:a08392b1b27d10e3b8a8648a5afeaa629"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4b0ef5ab721c43c5bacf957e11a65edf"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a4b0ef5ab721c43c5bacf957e11a65edf">densmatr_calcProbOfAllOutcomesLocal</a> (<a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> *retProbs, <a class="el" href="structQureg.html">Qureg</a> qureg, int *qubits, int numQubits)</td></tr>
<tr class="separator:a4b0ef5ab721c43c5bacf957e11a65edf"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af910c7cf2b85bdc2c399cfe8dbfb8b9c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#af910c7cf2b85bdc2c399cfe8dbfb8b9c">densmatr_calcPurityLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg)</td></tr>
<tr class="separator:af910c7cf2b85bdc2c399cfe8dbfb8b9c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8bea931504c90d9bd97e74645667804e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a8bea931504c90d9bd97e74645667804e">densmatr_findProbabilityOfZeroLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int measureQubit)</td></tr>
<tr class="separator:a8bea931504c90d9bd97e74645667804e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1b36518c8fbbc3a5084bb4ad1fb05ea5"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a1b36518c8fbbc3a5084bb4ad1fb05ea5">densmatr_initPureStateLocal</a> (<a class="el" href="structQureg.html">Qureg</a> targetQureg, <a class="el" href="structQureg.html">Qureg</a> copyQureg)</td></tr>
<tr class="separator:a1b36518c8fbbc3a5084bb4ad1fb05ea5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8d9c19a3424f0ad89bfbfd920d65301d"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a8d9c19a3424f0ad89bfbfd920d65301d">densmatr_mixDampingDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int targetQubit, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> damping)</td></tr>
<tr class="separator:a8d9c19a3424f0ad89bfbfd920d65301d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab124a3a9956046bf9c0e1e3ae9171f42"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#ab124a3a9956046bf9c0e1e3ae9171f42">densmatr_mixDampingLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int targetQubit, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> damping)</td></tr>
<tr class="separator:ab124a3a9956046bf9c0e1e3ae9171f42"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a88670d0e7cebe33f61c1dd98daa338b3"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a88670d0e7cebe33f61c1dd98daa338b3">densmatr_mixDepolarisingDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int targetQubit, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> depolLevel)</td></tr>
<tr class="separator:a88670d0e7cebe33f61c1dd98daa338b3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab750fb47da2fca9849c678c869e40e69"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#ab750fb47da2fca9849c678c869e40e69">densmatr_mixDepolarisingLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int targetQubit, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> depolLevel)</td></tr>
<tr class="separator:ab750fb47da2fca9849c678c869e40e69"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2f76ec8f08e19bb8e1254aafb10e160e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a2f76ec8f08e19bb8e1254aafb10e160e">densmatr_mixTwoQubitDepolarisingDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int targetQubit, int qubit2, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> delta, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> gamma)</td></tr>
<tr class="separator:a2f76ec8f08e19bb8e1254aafb10e160e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3510f01d4d15dcc545564eb84c668cad"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a3510f01d4d15dcc545564eb84c668cad">densmatr_mixTwoQubitDepolarisingLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int qubit1, int qubit2, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> delta, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> gamma)</td></tr>
<tr class="separator:a3510f01d4d15dcc545564eb84c668cad"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae90f82418e0aa67218d733dbbc681998"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#ae90f82418e0aa67218d733dbbc681998">densmatr_mixTwoQubitDepolarisingLocalPart1</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int qubit1, int qubit2, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> delta)</td></tr>
<tr class="separator:ae90f82418e0aa67218d733dbbc681998"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:acabdfbd3184d3ab3bded61e24142b800"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#acabdfbd3184d3ab3bded61e24142b800">densmatr_mixTwoQubitDepolarisingQ1LocalQ2DistributedPart3</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int targetQubit, int qubit2, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> delta, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> gamma)</td></tr>
<tr class="separator:acabdfbd3184d3ab3bded61e24142b800"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a100463f6ec212c76a5fad99579000505"><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a100463f6ec212c76a5fad99579000505">extractBit</a> (const int locationOfBitFromRight, const long long int theEncodedNumber)</td></tr>
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<tr class="memitem:a234f55b49a14dc4c58b1959effeb1b56"><td class="memItemLeft" align="right" valign="top">static long long int </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a234f55b49a14dc4c58b1959effeb1b56">flipBit</a> (const long long int number, const int bitInd)</td></tr>
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<tr class="memitem:a8909226b5f0589d82b34af7f6bf2a339"><td class="memItemLeft" align="right" valign="top">static long long int </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a8909226b5f0589d82b34af7f6bf2a339">insertTwoZeroBits</a> (const long long int number, const int bit1, const int bit2)</td></tr>
<tr class="separator:a8909226b5f0589d82b34af7f6bf2a339"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa183d46d750769c42ff07ae1aaedc105"><td class="memItemLeft" align="right" valign="top">static long long int </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#aa183d46d750769c42ff07ae1aaedc105">insertZeroBit</a> (const long long int number, const int index)</td></tr>
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<tr class="memitem:a0e4eb651e7cb309bcd664b89ac9a2242"><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a0e4eb651e7cb309bcd664b89ac9a2242">isOddParity</a> (const long long int number, const int qb1, const int qb2)</td></tr>
<tr class="separator:a0e4eb651e7cb309bcd664b89ac9a2242"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae94d012c3da6c84599e99f6afea81f5f"><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a> (const long long int mask, const int bitInd)</td></tr>
<tr class="separator:ae94d012c3da6c84599e99f6afea81f5f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a16ccb485bcffb328bbd5b2af6977cead"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structComplex.html">Complex</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a16ccb485bcffb328bbd5b2af6977cead">statevec_calcExpecDiagonalOpLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, <a class="el" href="structDiagonalOp.html">DiagonalOp</a> op)</td></tr>
<tr class="separator:a16ccb485bcffb328bbd5b2af6977cead"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6fbb3b693f25dde1e9e3dc87dc1984f7"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structComplex.html">Complex</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a6fbb3b693f25dde1e9e3dc87dc1984f7">statevec_calcInnerProductLocal</a> (<a class="el" href="structQureg.html">Qureg</a> bra, <a class="el" href="structQureg.html">Qureg</a> ket)</td></tr>
<tr class="separator:a6fbb3b693f25dde1e9e3dc87dc1984f7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aff4deaf21eb4ae6ae4de30779aae3b53"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#aff4deaf21eb4ae6ae4de30779aae3b53">statevec_calcProbOfAllOutcomesLocal</a> (<a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> *retProbs, <a class="el" href="structQureg.html">Qureg</a> qureg, int *qubits, int numQubits)</td></tr>
<tr class="separator:aff4deaf21eb4ae6ae4de30779aae3b53"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad09bb76ad67581b03ab176832cca37cf"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#ad09bb76ad67581b03ab176832cca37cf">statevec_collapseToKnownProbOutcomeDistributedRenorm</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int measureQubit, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> totalProbability)</td></tr>
<tr class="memdesc:ad09bb76ad67581b03ab176832cca37cf"><td class="mdescLeft"> </td><td class="mdescRight">Renormalise parts of the state vector where measureQubit=0 or 1, based on the total probability of that qubit being in state 0 or 1. <a href="QuEST__cpu__internal_8h.html#ad09bb76ad67581b03ab176832cca37cf">More...</a><br /></td></tr>
<tr class="separator:ad09bb76ad67581b03ab176832cca37cf"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab02bce0ebbb8f624e8ced8b09b99cdef"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#ab02bce0ebbb8f624e8ced8b09b99cdef">statevec_collapseToKnownProbOutcomeLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int measureQubit, int outcome, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> totalProbability)</td></tr>
<tr class="memdesc:ab02bce0ebbb8f624e8ced8b09b99cdef"><td class="mdescLeft"> </td><td class="mdescRight">Update the state vector to be consistent with measuring measureQubit=0 if outcome=0 and measureQubit=1 if outcome=1. <a href="QuEST__cpu__internal_8h.html#ab02bce0ebbb8f624e8ced8b09b99cdef">More...</a><br /></td></tr>
<tr class="separator:ab02bce0ebbb8f624e8ced8b09b99cdef"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a7ea68e9132ed9db9c242353a33dba2f0"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a7ea68e9132ed9db9c242353a33dba2f0">statevec_collapseToOutcomeDistributedSetZero</a> (<a class="el" href="structQureg.html">Qureg</a> qureg)</td></tr>
<tr class="separator:a7ea68e9132ed9db9c242353a33dba2f0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0a7a35628b1c1eb47336deb9afda5b68"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a0a7a35628b1c1eb47336deb9afda5b68">statevec_compactUnitaryDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, <a class="el" href="structComplex.html">Complex</a> rot1, <a class="el" href="structComplex.html">Complex</a> rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</td></tr>
<tr class="memdesc:a0a7a35628b1c1eb47336deb9afda5b68"><td class="mdescLeft"> </td><td class="mdescRight">Rotate a single qubit in the state vector of probability amplitudes, given two complex numbers alpha and beta, and a subset of the state vector with upper and lower block values stored seperately. <a href="QuEST__cpu__internal_8h.html#a0a7a35628b1c1eb47336deb9afda5b68">More...</a><br /></td></tr>
<tr class="separator:a0a7a35628b1c1eb47336deb9afda5b68"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a5ddfdb22e4704b680d67d08d9e80835b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a5ddfdb22e4704b680d67d08d9e80835b">statevec_compactUnitaryLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int targetQubit, <a class="el" href="structComplex.html">Complex</a> alpha, <a class="el" href="structComplex.html">Complex</a> beta)</td></tr>
<tr class="separator:a5ddfdb22e4704b680d67d08d9e80835b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a071baf8b6951d2a7d6529394b6f39364"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a071baf8b6951d2a7d6529394b6f39364">statevec_controlledCompactUnitaryDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int controlQubit, <a class="el" href="structComplex.html">Complex</a> rot1, <a class="el" href="structComplex.html">Complex</a> rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</td></tr>
<tr class="memdesc:a071baf8b6951d2a7d6529394b6f39364"><td class="mdescLeft"> </td><td class="mdescRight">Rotate a single qubit in the state vector of probability amplitudes, given two complex numbers alpha and beta and a subset of the state vector with upper and lower block values stored seperately. <a href="QuEST__cpu__internal_8h.html#a071baf8b6951d2a7d6529394b6f39364">More...</a><br /></td></tr>
<tr class="separator:a071baf8b6951d2a7d6529394b6f39364"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a215e2d6f88dbecc0b408b3573b5e144f"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a215e2d6f88dbecc0b408b3573b5e144f">statevec_controlledCompactUnitaryLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int controlQubit, int targetQubit, <a class="el" href="structComplex.html">Complex</a> alpha, <a class="el" href="structComplex.html">Complex</a> beta)</td></tr>
<tr class="separator:a215e2d6f88dbecc0b408b3573b5e144f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a393da4c4bc582a757ca8406d8501aca0"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a393da4c4bc582a757ca8406d8501aca0">statevec_controlledNotDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int controlQubit, ComplexArray stateVecIn, ComplexArray stateVecOut)</td></tr>
<tr class="memdesc:a393da4c4bc582a757ca8406d8501aca0"><td class="mdescLeft"> </td><td class="mdescRight">Rotate a single qubit by {{0,1},{1,0}. <a href="QuEST__cpu__internal_8h.html#a393da4c4bc582a757ca8406d8501aca0">More...</a><br /></td></tr>
<tr class="separator:a393da4c4bc582a757ca8406d8501aca0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ace1482ef82b83e7f926634a67b322fc4"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#ace1482ef82b83e7f926634a67b322fc4">statevec_controlledNotLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int controlQubit, int targetQubit)</td></tr>
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<tr class="memitem:ae64f9630325b6f93c6e1e17b9918ecef"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#ae64f9630325b6f93c6e1e17b9918ecef">statevec_controlledPauliYDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int controlQubit, ComplexArray stateVecIn, ComplexArray stateVecOut, int conjFactor)</td></tr>
<tr class="separator:ae64f9630325b6f93c6e1e17b9918ecef"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:abc6383ac53124601e58922205b3cc484"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#abc6383ac53124601e58922205b3cc484">statevec_controlledPauliYLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int controlQubit, int targetQubit, int conjFactor)</td></tr>
<tr class="separator:abc6383ac53124601e58922205b3cc484"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a57368529b2a7e76fec423cbfe9980b22"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a57368529b2a7e76fec423cbfe9980b22">statevec_controlledUnitaryDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int controlQubit, <a class="el" href="structComplex.html">Complex</a> rot1, <a class="el" href="structComplex.html">Complex</a> rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</td></tr>
<tr class="memdesc:a57368529b2a7e76fec423cbfe9980b22"><td class="mdescLeft"> </td><td class="mdescRight">Rotate a single qubit in the state vector of probability amplitudes, given two complex numbers alpha and beta and a subset of the state vector with upper and lower block values stored seperately. <a href="QuEST__cpu__internal_8h.html#a57368529b2a7e76fec423cbfe9980b22">More...</a><br /></td></tr>
<tr class="separator:a57368529b2a7e76fec423cbfe9980b22"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a903beb4f5d8753a964ce2dc5f9096a24"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a903beb4f5d8753a964ce2dc5f9096a24">statevec_controlledUnitaryLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int controlQubit, int targetQubit, <a class="el" href="structComplexMatrix2.html">ComplexMatrix2</a> u)</td></tr>
<tr class="separator:a903beb4f5d8753a964ce2dc5f9096a24"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a430d98e35f1eae7f0815ac539057cf67"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a430d98e35f1eae7f0815ac539057cf67">statevec_findProbabilityOfZeroDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg)</td></tr>
<tr class="memdesc:a430d98e35f1eae7f0815ac539057cf67"><td class="mdescLeft"> </td><td class="mdescRight">Measure the probability of a specified qubit being in the zero state across all amplitudes held in this chunk. <a href="QuEST__cpu__internal_8h.html#a430d98e35f1eae7f0815ac539057cf67">More...</a><br /></td></tr>
<tr class="separator:a430d98e35f1eae7f0815ac539057cf67"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8535bc15c2ff249ddddb3fde6eff1490"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a8535bc15c2ff249ddddb3fde6eff1490">statevec_findProbabilityOfZeroLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int measureQubit)</td></tr>
<tr class="memdesc:a8535bc15c2ff249ddddb3fde6eff1490"><td class="mdescLeft"> </td><td class="mdescRight">Measure the total probability of a specified qubit being in the zero state across all amplitudes in this chunk. <a href="QuEST__cpu__internal_8h.html#a8535bc15c2ff249ddddb3fde6eff1490">More...</a><br /></td></tr>
<tr class="separator:a8535bc15c2ff249ddddb3fde6eff1490"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:abea6570b95fdfa102511ccd1fcb30685"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#abea6570b95fdfa102511ccd1fcb30685">statevec_hadamardDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut, int updateUpper)</td></tr>
<tr class="memdesc:abea6570b95fdfa102511ccd1fcb30685"><td class="mdescLeft"> </td><td class="mdescRight">Rotate a single qubit by {{1,1},{1,-1}}/sqrt2. <a href="QuEST__cpu__internal_8h.html#abea6570b95fdfa102511ccd1fcb30685">More...</a><br /></td></tr>
<tr class="separator:abea6570b95fdfa102511ccd1fcb30685"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a86dbcc3db99294add9964741e19fbdab"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a86dbcc3db99294add9964741e19fbdab">statevec_hadamardLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int targetQubit)</td></tr>
<tr class="separator:a86dbcc3db99294add9964741e19fbdab"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae6f0c9ed9261afbab4712e056a88763d"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#ae6f0c9ed9261afbab4712e056a88763d">statevec_multiControlledMultiQubitNotDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int ctrlMask, int targMask, ComplexArray stateVecIn, ComplexArray stateVecOut)</td></tr>
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<tr class="memitem:ac7d30ce54573c75b35386cd0e284adc5"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#ac7d30ce54573c75b35386cd0e284adc5">statevec_multiControlledMultiQubitNotLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int ctrlMask, int targMask)</td></tr>
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<tr class="memitem:a0aedcccfa50c7aaa8b7fc4c14d7cdfb8"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a0aedcccfa50c7aaa8b7fc4c14d7cdfb8">statevec_multiControlledMultiQubitUnitaryLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, long long int ctrlMask, int *targs, int numTargs, <a class="el" href="structComplexMatrixN.html">ComplexMatrixN</a> u)</td></tr>
<tr class="separator:a0aedcccfa50c7aaa8b7fc4c14d7cdfb8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af8236a00389137b5eff986a40577eaf3"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#af8236a00389137b5eff986a40577eaf3">statevec_multiControlledTwoQubitUnitaryLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, long long int ctrlMask, int q1, int q2, <a class="el" href="structComplexMatrix4.html">ComplexMatrix4</a> u)</td></tr>
<tr class="separator:af8236a00389137b5eff986a40577eaf3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab58fe4be895283c2c4eb86ec9af5682e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#ab58fe4be895283c2c4eb86ec9af5682e">statevec_multiControlledUnitaryDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int targetQubit, long long int ctrlQubitsMask, long long int ctrlFlipMask, <a class="el" href="structComplex.html">Complex</a> rot1, <a class="el" href="structComplex.html">Complex</a> rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</td></tr>
<tr class="memdesc:ab58fe4be895283c2c4eb86ec9af5682e"><td class="mdescLeft"> </td><td class="mdescRight">Apply a unitary operation to a single qubit in the state vector of probability amplitudes, given a subset of the state vector with upper and lower block values stored seperately. <a href="QuEST__cpu__internal_8h.html#ab58fe4be895283c2c4eb86ec9af5682e">More...</a><br /></td></tr>
<tr class="separator:ab58fe4be895283c2c4eb86ec9af5682e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab19f28e68330da68ea3caa2bdef32da9"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#ab19f28e68330da68ea3caa2bdef32da9">statevec_multiControlledUnitaryLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int targetQubit, long long int ctrlQubitsMask, long long int ctrlFlipMask, <a class="el" href="structComplexMatrix2.html">ComplexMatrix2</a> u)</td></tr>
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<tr class="memitem:a464efbd1d7ca5a7b25c83ada001955c2"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a464efbd1d7ca5a7b25c83ada001955c2">statevec_pauliXDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, ComplexArray stateVecIn, ComplexArray stateVecOut)</td></tr>
<tr class="memdesc:a464efbd1d7ca5a7b25c83ada001955c2"><td class="mdescLeft"> </td><td class="mdescRight">Rotate a single qubit by {{0,1},{1,0}. <a href="QuEST__cpu__internal_8h.html#a464efbd1d7ca5a7b25c83ada001955c2">More...</a><br /></td></tr>
<tr class="separator:a464efbd1d7ca5a7b25c83ada001955c2"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa987d1e0ba97da2ca540194356dd62de"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#aa987d1e0ba97da2ca540194356dd62de">statevec_pauliXLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int targetQubit)</td></tr>
<tr class="separator:aa987d1e0ba97da2ca540194356dd62de"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0f562af6cb665a8a7a3f80e9449734d5"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a0f562af6cb665a8a7a3f80e9449734d5">statevec_pauliYDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, ComplexArray stateVecIn, ComplexArray stateVecOut, int updateUpper, int conjFac)</td></tr>
<tr class="memdesc:a0f562af6cb665a8a7a3f80e9449734d5"><td class="mdescLeft"> </td><td class="mdescRight">Rotate a single qubit by +-{{0,-i},{i,0}. <a href="QuEST__cpu__internal_8h.html#a0f562af6cb665a8a7a3f80e9449734d5">More...</a><br /></td></tr>
<tr class="separator:a0f562af6cb665a8a7a3f80e9449734d5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a45b0916c3e121837f214b64f7424e479"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a45b0916c3e121837f214b64f7424e479">statevec_pauliYLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int targetQubit, int conjFac)</td></tr>
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<tr class="memitem:abe74a5a9db8340e37b80fbc77338894d"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#abe74a5a9db8340e37b80fbc77338894d">statevec_swapQubitAmpsDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int pairRank, int qb1, int qb2)</td></tr>
<tr class="memdesc:abe74a5a9db8340e37b80fbc77338894d"><td class="mdescLeft"> </td><td class="mdescRight">qureg.pairStateVec contains the entire set of amplitudes of the paired node which includes the set of all amplitudes which need to be swapped between |..0..1..> and |..1..0..> <a href="QuEST__cpu__internal_8h.html#abe74a5a9db8340e37b80fbc77338894d">More...</a><br /></td></tr>
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<tr class="memitem:ab5b51a28caa8792a3f0c637409a694b0"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#ab5b51a28caa8792a3f0c637409a694b0">statevec_swapQubitAmpsLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int qb1, int qb2)</td></tr>
<tr class="memdesc:ab5b51a28caa8792a3f0c637409a694b0"><td class="mdescLeft"> </td><td class="mdescRight">It is ensured that all amplitudes needing to be swapped are on this node. <a href="QuEST__cpu__internal_8h.html#ab5b51a28caa8792a3f0c637409a694b0">More...</a><br /></td></tr>
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<tr class="memitem:a0ce2c2fd54df25495e99dc5b95bed4b2"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#a0ce2c2fd54df25495e99dc5b95bed4b2">statevec_unitaryDistributed</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, <a class="el" href="structComplex.html">Complex</a> rot1, <a class="el" href="structComplex.html">Complex</a> rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</td></tr>
<tr class="memdesc:a0ce2c2fd54df25495e99dc5b95bed4b2"><td class="mdescLeft"> </td><td class="mdescRight">Apply a unitary operation to a single qubit given a subset of the state vector with upper and lower block values stored seperately. <a href="QuEST__cpu__internal_8h.html#a0ce2c2fd54df25495e99dc5b95bed4b2">More...</a><br /></td></tr>
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<tr class="memitem:aafc398f8f479fcc066a2dea700235635"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="QuEST__cpu__internal_8h.html#aafc398f8f479fcc066a2dea700235635">statevec_unitaryLocal</a> (<a class="el" href="structQureg.html">Qureg</a> qureg, int targetQubit, <a class="el" href="structComplexMatrix2.html">ComplexMatrix2</a> u)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Internal functions used to implement the pure backend in ../QuEST_ops_pure.h. Do not call these functions directly. In general, qubits_cpu_local.c and qubits_cpu_mpi.c will implement the pure backend by choosing the correct function or combination of functions to use from those included here, which are defined in <a class="el" href="QuEST__cpu_8c.html">QuEST_cpu.c</a></p>
<dl class="section author"><dt>Author</dt><dd>Ania Brown </dd>
<dd>
Tyson Jones </dd>
<dd>
Balint Koczor </dd></dl>
<p class="definition">Definition in file <a class="el" href="QuEST__cpu__internal_8h_source.html">QuEST_cpu_internal.h</a>.</p>
</div><h2 class="groupheader">Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#afa58cf7cb98a25ab33621120c5c330d0">◆ </a></span>densmatr_applyDiagonalOpLocal()</h2>
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<td class="memname">void densmatr_applyDiagonalOpLocal </td>
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<p class="definition">Definition at line <a class="el" href="QuEST__cpu_8c_source.html#l04082">4082</a> of file <a class="el" href="QuEST__cpu_8c_source.html">QuEST_cpu.c</a>.</p>
<div class="fragment"><div class="line"><a name="l04082"></a><span class="lineno"> 4082</span>  {</div>
<div class="line"><a name="l04083"></a><span class="lineno"> 4083</span>  </div>
<div class="line"><a name="l04084"></a><span class="lineno"> 4084</span>  <span class="comment">/* ALL values of op are pre-loaded into qureg.pairStateVector (on every node).</span></div>
<div class="line"><a name="l04085"></a><span class="lineno"> 4085</span> <span class="comment"> * Furthermore, since it's gauranteed each node contains an integer number of </span></div>
<div class="line"><a name="l04086"></a><span class="lineno"> 4086</span> <span class="comment"> * columns of qureg (because op upperlimits the number of nodes; 1 per element),</span></div>
<div class="line"><a name="l04087"></a><span class="lineno"> 4087</span> <span class="comment"> * then we know iteration below begins at the 'top' of a column, and there is </span></div>
<div class="line"><a name="l04088"></a><span class="lineno"> 4088</span> <span class="comment"> * no offset for op (pairStateVector)</span></div>
<div class="line"><a name="l04089"></a><span class="lineno"> 4089</span> <span class="comment"> */</span></div>
<div class="line"><a name="l04090"></a><span class="lineno"> 4090</span>  </div>
<div class="line"><a name="l04091"></a><span class="lineno"> 4091</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numAmps = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l04092"></a><span class="lineno"> 4092</span>  <span class="keywordtype">int</span> opDim = (1 << op.<a class="code" href="structDiagonalOp.html#a5131eeb67aafb4c19ac98270c3266742">numQubits</a>);</div>
<div class="line"><a name="l04093"></a><span class="lineno"> 4093</span>  </div>
<div class="line"><a name="l04094"></a><span class="lineno"> 4094</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* stateRe = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real;</div>
<div class="line"><a name="l04095"></a><span class="lineno"> 4095</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* stateIm = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag;</div>
<div class="line"><a name="l04096"></a><span class="lineno"> 4096</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* opRe = qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real;</div>
<div class="line"><a name="l04097"></a><span class="lineno"> 4097</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* opIm = qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag;</div>
<div class="line"><a name="l04098"></a><span class="lineno"> 4098</span>  </div>
<div class="line"><a name="l04099"></a><span class="lineno"> 4099</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> a,b,c,d;</div>
<div class="line"><a name="l04100"></a><span class="lineno"> 4100</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index;</div>
<div class="line"><a name="l04101"></a><span class="lineno"> 4101</span>  </div>
<div class="line"><a name="l04102"></a><span class="lineno"> 4102</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l04103"></a><span class="lineno"> 4103</span> <span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l04104"></a><span class="lineno"> 4104</span> <span class="preprocessor"> shared (stateRe,stateIm, opRe,opIm, numAmps,opDim) \</span></div>
<div class="line"><a name="l04105"></a><span class="lineno"> 4105</span> <span class="preprocessor"> private (index, a,b,c,d)</span></div>
<div class="line"><a name="l04106"></a><span class="lineno"> 4106</span> <span class="preprocessor"># endif </span></div>
<div class="line"><a name="l04107"></a><span class="lineno"> 4107</span>  {</div>
<div class="line"><a name="l04108"></a><span class="lineno"> 4108</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l04109"></a><span class="lineno"> 4109</span> <span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l04110"></a><span class="lineno"> 4110</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l04111"></a><span class="lineno"> 4111</span>  <span class="keywordflow">for</span> (index=0LL; index<numAmps; index++) {</div>
<div class="line"><a name="l04112"></a><span class="lineno"> 4112</span>  a = stateRe[index];</div>
<div class="line"><a name="l04113"></a><span class="lineno"> 4113</span>  b = stateIm[index];</div>
<div class="line"><a name="l04114"></a><span class="lineno"> 4114</span>  c = opRe[index % opDim];</div>
<div class="line"><a name="l04115"></a><span class="lineno"> 4115</span>  d = opIm[index % opDim];</div>
<div class="line"><a name="l04116"></a><span class="lineno"> 4116</span>  </div>
<div class="line"><a name="l04117"></a><span class="lineno"> 4117</span>  <span class="comment">// (a + b i)(c + d i) = (a c - b d) + i (a d + b c)</span></div>
<div class="line"><a name="l04118"></a><span class="lineno"> 4118</span>  stateRe[index] = a*c - b*d;</div>
<div class="line"><a name="l04119"></a><span class="lineno"> 4119</span>  stateIm[index] = a*d + b*c;</div>
<div class="line"><a name="l04120"></a><span class="lineno"> 4120</span>  }</div>
<div class="line"><a name="l04121"></a><span class="lineno"> 4121</span>  }</div>
<div class="line"><a name="l04122"></a><span class="lineno"> 4122</span> }</div>
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<p class="reference">References <a class="el" href="QuEST_8h_source.html#l00332">Qureg::numAmpsPerChunk</a>, <a class="el" href="QuEST_8h_source.html#l00300">DiagonalOp::numQubits</a>, <a class="el" href="QuEST_8h_source.html#l00343">Qureg::pairStateVec</a>, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>, and <a class="el" href="QuEST_8h_source.html#l00341">Qureg::stateVec</a>.</p>
<p class="reference">Referenced by <a class="el" href="QuEST__cpu__distributed_8c_source.html#l01594">densmatr_applyDiagonalOp()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aeb4453a2e609e5359d2995bccf6663ca">◆ </a></span>densmatr_calcExpecDiagonalOpLocal()</h2>
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<td class="memname"><a class="el" href="structComplex.html">Complex</a> densmatr_calcExpecDiagonalOpLocal </td>
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<p class="definition">Definition at line <a class="el" href="QuEST__cpu_8c_source.html#l04167">4167</a> of file <a class="el" href="QuEST__cpu_8c_source.html">QuEST_cpu.c</a>.</p>
<div class="fragment"><div class="line"><a name="l04167"></a><span class="lineno"> 4167</span>  {</div>
<div class="line"><a name="l04168"></a><span class="lineno"> 4168</span>  </div>
<div class="line"><a name="l04169"></a><span class="lineno"> 4169</span>  <span class="comment">/* since for every 1 element in \p op, there exists a column in \p qureg, </span></div>
<div class="line"><a name="l04170"></a><span class="lineno"> 4170</span> <span class="comment"> * we know that the elements in \p op live on the same node as the </span></div>
<div class="line"><a name="l04171"></a><span class="lineno"> 4171</span> <span class="comment"> * corresponding diagonal elements of \p qureg. This means, the problem is </span></div>
<div class="line"><a name="l04172"></a><span class="lineno"> 4172</span> <span class="comment"> * embarrassingly parallelisable, and the code below works for both </span></div>
<div class="line"><a name="l04173"></a><span class="lineno"> 4173</span> <span class="comment"> * serial and distributed modes.</span></div>
<div class="line"><a name="l04174"></a><span class="lineno"> 4174</span> <span class="comment"> */</span></div>
<div class="line"><a name="l04175"></a><span class="lineno"> 4175</span>  </div>
<div class="line"><a name="l04176"></a><span class="lineno"> 4176</span>  <span class="comment">// computes first local index containing a diagonal element</span></div>
<div class="line"><a name="l04177"></a><span class="lineno"> 4177</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> diagSpacing = 1LL + (1LL << qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l04178"></a><span class="lineno"> 4178</span>  <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>>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="l04179"></a><span class="lineno"> 4179</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> globalIndNextDiag = diagSpacing * numPrevDiags;</div>
<div class="line"><a name="l04180"></a><span class="lineno"> 4180</span>  <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="l04181"></a><span class="lineno"> 4181</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numAmps = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l04182"></a><span class="lineno"> 4182</span>  </div>
<div class="line"><a name="l04183"></a><span class="lineno"> 4183</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* stateReal = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real;</div>
<div class="line"><a name="l04184"></a><span class="lineno"> 4184</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* stateImag = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag;</div>
<div class="line"><a name="l04185"></a><span class="lineno"> 4185</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* opReal = op.<a class="code" href="structDiagonalOp.html#a1d66088bed235d524cd452b107694d5c">real</a>;</div>
<div class="line"><a name="l04186"></a><span class="lineno"> 4186</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* opImag = op.<a class="code" href="structDiagonalOp.html#a85c3f52533efe831bbe40b9a48602388">imag</a>;</div>
<div class="line"><a name="l04187"></a><span class="lineno"> 4187</span>  </div>
<div class="line"><a name="l04188"></a><span class="lineno"> 4188</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> expecRe = 0;</div>
<div class="line"><a name="l04189"></a><span class="lineno"> 4189</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> expecIm = 0;</div>
<div class="line"><a name="l04190"></a><span class="lineno"> 4190</span>  </div>
<div class="line"><a name="l04191"></a><span class="lineno"> 4191</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> stateInd;</div>
<div class="line"><a name="l04192"></a><span class="lineno"> 4192</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> opInd;</div>
<div class="line"><a name="l04193"></a><span class="lineno"> 4193</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> matRe, matIm, opRe, opIm;</div>
<div class="line"><a name="l04194"></a><span class="lineno"> 4194</span>  </div>
<div class="line"><a name="l04195"></a><span class="lineno"> 4195</span>  <span class="comment">// visits every diagonal element with global index (2^n + 1)i for i in [0, 2^n-1]</span></div>
<div class="line"><a name="l04196"></a><span class="lineno"> 4196</span>  </div>
<div class="line"><a name="l04197"></a><span class="lineno"> 4197</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l04198"></a><span class="lineno"> 4198</span> <span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l04199"></a><span class="lineno"> 4199</span> <span class="preprocessor"> shared (stateReal,stateImag, opReal,opImag, localIndNextDiag,diagSpacing,numAmps) \</span></div>
<div class="line"><a name="l04200"></a><span class="lineno"> 4200</span> <span class="preprocessor"> private (stateInd,opInd, matRe,matIm, opRe,opIm) \</span></div>
<div class="line"><a name="l04201"></a><span class="lineno"> 4201</span> <span class="preprocessor"> reduction ( +:expecRe, expecIm )</span></div>
<div class="line"><a name="l04202"></a><span class="lineno"> 4202</span> <span class="preprocessor"># endif </span></div>
<div class="line"><a name="l04203"></a><span class="lineno"> 4203</span>  {</div>
<div class="line"><a name="l04204"></a><span class="lineno"> 4204</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l04205"></a><span class="lineno"> 4205</span> <span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l04206"></a><span class="lineno"> 4206</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l04207"></a><span class="lineno"> 4207</span>  <span class="keywordflow">for</span> (stateInd=localIndNextDiag; stateInd < numAmps; stateInd += diagSpacing) {</div>
<div class="line"><a name="l04208"></a><span class="lineno"> 4208</span>  </div>
<div class="line"><a name="l04209"></a><span class="lineno"> 4209</span>  matRe = stateReal[stateInd];</div>
<div class="line"><a name="l04210"></a><span class="lineno"> 4210</span>  matIm = stateImag[stateInd];</div>
<div class="line"><a name="l04211"></a><span class="lineno"> 4211</span>  opInd = (stateInd - localIndNextDiag) / diagSpacing;</div>
<div class="line"><a name="l04212"></a><span class="lineno"> 4212</span>  opRe = opReal[opInd];</div>
<div class="line"><a name="l04213"></a><span class="lineno"> 4213</span>  opIm = opImag[opInd];</div>
<div class="line"><a name="l04214"></a><span class="lineno"> 4214</span>  </div>
<div class="line"><a name="l04215"></a><span class="lineno"> 4215</span>  <span class="comment">// (matRe + matIm i)(opRe + opIm i) = </span></div>
<div class="line"><a name="l04216"></a><span class="lineno"> 4216</span>  <span class="comment">// (matRe opRe - matIm opIm) + i (matRe opIm + matIm opRe)</span></div>
<div class="line"><a name="l04217"></a><span class="lineno"> 4217</span>  expecRe += matRe * opRe - matIm * opIm;</div>
<div class="line"><a name="l04218"></a><span class="lineno"> 4218</span>  expecIm += matRe * opIm + matIm * opRe;</div>
<div class="line"><a name="l04219"></a><span class="lineno"> 4219</span>  }</div>
<div class="line"><a name="l04220"></a><span class="lineno"> 4220</span>  }</div>
<div class="line"><a name="l04221"></a><span class="lineno"> 4221</span>  </div>
<div class="line"><a name="l04222"></a><span class="lineno"> 4222</span>  <a class="code" href="structComplex.html">Complex</a> expecVal;</div>
<div class="line"><a name="l04223"></a><span class="lineno"> 4223</span>  expecVal.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a> = expecRe;</div>
<div class="line"><a name="l04224"></a><span class="lineno"> 4224</span>  expecVal.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a> = expecIm;</div>
<div class="line"><a name="l04225"></a><span class="lineno"> 4225</span>  <span class="keywordflow">return</span> expecVal;</div>
<div class="line"><a name="l04226"></a><span class="lineno"> 4226</span> }</div>
</div><!-- fragment -->
<p class="reference">References <a class="el" href="QuEST_8h_source.html#l00336">Qureg::chunkId</a>, <a class="el" href="QuEST_8h_source.html#l00106">Complex::imag</a>, <a class="el" href="QuEST_8h_source.html#l00310">DiagonalOp::imag</a>, <a class="el" href="QuEST_8h_source.html#l00332">Qureg::numAmpsPerChunk</a>, <a class="el" href="QuEST_8h_source.html#l00327">Qureg::numQubitsRepresented</a>, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>, <a class="el" href="QuEST_8h_source.html#l00105">Complex::real</a>, <a class="el" href="QuEST_8h_source.html#l00308">DiagonalOp::real</a>, and <a class="el" href="QuEST_8h_source.html#l00341">Qureg::stateVec</a>.</p>
<p class="reference">Referenced by <a class="el" href="QuEST__cpu__distributed_8c_source.html#l01618">densmatr_calcExpecDiagonalOp()</a>.</p>
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<a id="a7772f97cb4d92a9825bf3b7c82c3230c"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a7772f97cb4d92a9825bf3b7c82c3230c">◆ </a></span>densmatr_calcFidelityLocal()</h2>
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<td class="memname"><a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> densmatr_calcFidelityLocal </td>
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<td class="paramtype"><a class="el" href="structQureg.html">Qureg</a> </td>
<td class="paramname"><em>qureg</em>, </td>
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<td class="paramtype"><a class="el" href="structQureg.html">Qureg</a> </td>
<td class="paramname"><em>pureState</em> </td>
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<p>computes a few dens-columns-worth of (vec^*T) dens * vec </p>
<p class="definition">Definition at line <a class="el" href="QuEST__cpu_8c_source.html#l01001">1001</a> of file <a class="el" href="QuEST__cpu_8c_source.html">QuEST_cpu.c</a>.</p>
<div class="fragment"><div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>  {</div>
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  </div>
<div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>  <span class="comment">/* Here, elements of pureState are not accessed (instead grabbed from qureg.pair).</span></div>
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span> <span class="comment"> * We only consult the attributes.</span></div>
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span> <span class="comment"> *</span></div>
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span> <span class="comment"> * qureg is a density matrix, and pureState is a statevector.</span></div>
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span> <span class="comment"> * Every node contains as many columns of qureg as amps by pureState.</span></div>
<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span> <span class="comment"> * (each node contains an integer, exponent-of-2 number of whole columns of qureg)</span></div>
<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span> <span class="comment"> * Ergo, this node contains columns:</span></div>
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span> <span class="comment"> * qureg.chunkID * pureState.numAmpsPerChunk to</span></div>
<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span> <span class="comment"> * (qureg.chunkID + 1) * pureState.numAmpsPerChunk</span></div>
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span> <span class="comment"> *</span></div>
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span> <span class="comment"> * The first pureState.numAmpsTotal elements of qureg.pairStateVec are the</span></div>
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span> <span class="comment"> * entire pureState state-vector</span></div>
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>  </div>
<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>  <span class="comment">// unpack everything for OPENMP</span></div>
<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* vecRe = qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real;</div>
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* vecIm = qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag;</div>
<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* densRe = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real;</div>
<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* densIm = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag;</div>
<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>  </div>
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  <span class="keywordtype">int</span> row, col;</div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  <span class="keywordtype">int</span> dim = (int) pureState.<a class="code" href="structQureg.html#adef4935cac95763c29164cf99b144ed4">numAmpsTotal</a>; </div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  <span class="keywordtype">int</span> colsPerNode = (<span class="keywordtype">int</span>) pureState.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  <span class="comment">// using only int, because density matrix has squared as many amps so its </span></div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  <span class="comment">// iteration would be impossible if the pureStates numAmpsTotal didn't fit into int</span></div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>  </div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  <span class="comment">// starting GLOBAL column index of the qureg columns on this node</span></div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  <span class="keywordtype">int</span> startCol = (int) (qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a> * pureState.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>);</div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  </div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> densElemRe, densElemIm;</div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> prefacRe, prefacIm;</div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> rowSumRe, rowSumIm;</div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> vecElemRe, vecElemIm;</div>
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  </div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>  <span class="comment">// quantity computed by this node</span></div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalSumRe = 0; <span class="comment">// imag-component is assumed zero</span></div>
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  </div>
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span> <span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span> <span class="preprocessor"> shared (vecRe,vecIm,densRe,densIm, dim,colsPerNode,startCol) \</span></div>
<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span> <span class="preprocessor"> private (row,col, prefacRe,prefacIm, rowSumRe,rowSumIm, densElemRe,densElemIm, vecElemRe,vecElemIm) \</span></div>
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span> <span class="preprocessor"> reduction ( +:globalSumRe )</span></div>
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span> <span class="preprocessor"># endif </span></div>
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  {</div>
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span> <span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>  <span class="comment">// indices of my GLOBAL row</span></div>
<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  <span class="keywordflow">for</span> (row=0; row < dim; row++) {</div>
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>  </div>
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  <span class="comment">// single element of conj(pureState)</span></div>
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  prefacRe = vecRe[row];</div>
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>  prefacIm = - vecIm[row];</div>
<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>  </div>
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>  rowSumRe = 0;</div>
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>  rowSumIm = 0;</div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>  </div>
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>  <span class="comment">// indices of my LOCAL column</span></div>
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>  <span class="keywordflow">for</span> (col=0; col < colsPerNode; col++) {</div>
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>  </div>
<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>  <span class="comment">// my local density element</span></div>
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>  densElemRe = densRe[row + dim*col];</div>
<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>  densElemIm = densIm[row + dim*col];</div>
<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>  </div>
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>  <span class="comment">// state-vector element</span></div>
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>  vecElemRe = vecRe[startCol + col];</div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>  vecElemIm = vecIm[startCol + col];</div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>  </div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  rowSumRe += densElemRe*vecElemRe - densElemIm*vecElemIm;</div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  rowSumIm += densElemRe*vecElemIm + densElemIm*vecElemRe;</div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  }</div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  </div>
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  globalSumRe += rowSumRe*prefacRe - rowSumIm*prefacIm; </div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>  }</div>
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>  }</div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  </div>
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  <span class="keywordflow">return</span> globalSumRe;</div>
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span> }</div>
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<p class="reference">References <a class="el" href="QuEST_8h_source.html#l00336">Qureg::chunkId</a>, <a class="el" href="QuEST_8h_source.html#l00332">Qureg::numAmpsPerChunk</a>, <a class="el" href="QuEST_8h_source.html#l00334">Qureg::numAmpsTotal</a>, <a class="el" href="QuEST_8h_source.html#l00343">Qureg::pairStateVec</a>, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>, and <a class="el" href="QuEST_8h_source.html#l00341">Qureg::stateVec</a>.</p>
<p class="reference">Referenced by <a class="el" href="QuEST__cpu__distributed_8c_source.html#l00429">densmatr_calcFidelity()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a939897137596bb73ad7a028d0beaaa10">◆ </a></span>densmatr_calcHilbertSchmidtDistanceSquaredLocal()</h2>
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<td class="memname"><a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> densmatr_calcHilbertSchmidtDistanceSquaredLocal </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structQureg.html">Qureg</a> </td>
<td class="paramname"><em>a</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structQureg.html">Qureg</a> </td>
<td class="paramname"><em>b</em> </td>
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<p>computes Tr((a-b) conjTrans(a-b)) = sum of abs values of (a-b) </p>
<p class="definition">Definition at line <a class="el" href="QuEST__cpu_8c_source.html#l00934">934</a> of file <a class="el" href="QuEST__cpu_8c_source.html">QuEST_cpu.c</a>.</p>
<div class="fragment"><div class="line"><a name="l00934"></a><span class="lineno"> 934</span>  {</div>
<div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  </div>
<div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index;</div>
<div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numAmps = a.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  </div>
<div class="line"><a name="l00939"></a><span class="lineno"> 939</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> *aRe = a.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real;</div>
<div class="line"><a name="l00940"></a><span class="lineno"> 940</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> *aIm = a.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag;</div>
<div class="line"><a name="l00941"></a><span class="lineno"> 941</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> *bRe = b.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real;</div>
<div class="line"><a name="l00942"></a><span class="lineno"> 942</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> *bIm = b.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag;</div>
<div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  </div>
<div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> trace = 0;</div>
<div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> difRe, difIm;</div>
<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  </div>
<div class="line"><a name="l00947"></a><span class="lineno"> 947</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00948"></a><span class="lineno"> 948</span> <span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l00949"></a><span class="lineno"> 949</span> <span class="preprocessor"> shared (aRe,aIm, bRe,bIm, numAmps) \</span></div>
<div class="line"><a name="l00950"></a><span class="lineno"> 950</span> <span class="preprocessor"> private (index,difRe,difIm) \</span></div>
<div class="line"><a name="l00951"></a><span class="lineno"> 951</span> <span class="preprocessor"> reduction ( +:trace )</span></div>
<div class="line"><a name="l00952"></a><span class="lineno"> 952</span> <span class="preprocessor"># endif </span></div>
<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  {</div>
<div class="line"><a name="l00954"></a><span class="lineno"> 954</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00955"></a><span class="lineno"> 955</span> <span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l00956"></a><span class="lineno"> 956</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00957"></a><span class="lineno"> 957</span>  <span class="keywordflow">for</span> (index=0LL; index<numAmps; index++) {</div>
<div class="line"><a name="l00958"></a><span class="lineno"> 958</span>  </div>
<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  difRe = aRe[index] - bRe[index];</div>
<div class="line"><a name="l00960"></a><span class="lineno"> 960</span>  difIm = aIm[index] - bIm[index];</div>
<div class="line"><a name="l00961"></a><span class="lineno"> 961</span>  trace += difRe*difRe + difIm*difIm;</div>
<div class="line"><a name="l00962"></a><span class="lineno"> 962</span>  }</div>
<div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  }</div>
<div class="line"><a name="l00964"></a><span class="lineno"> 964</span>  </div>
<div class="line"><a name="l00965"></a><span class="lineno"> 965</span>  <span class="keywordflow">return</span> trace;</div>
<div class="line"><a name="l00966"></a><span class="lineno"> 966</span> }</div>
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<p class="reference">References <a class="el" href="QuEST_8h_source.html#l00332">Qureg::numAmpsPerChunk</a>, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>, and <a class="el" href="QuEST_8h_source.html#l00341">Qureg::stateVec</a>.</p>
<p class="reference">Referenced by <a class="el" href="QuEST__cpu__distributed_8c_source.html#l00444">densmatr_calcHilbertSchmidtDistance()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a08392b1b27d10e3b8a8648a5afeaa629">◆ </a></span>densmatr_calcInnerProductLocal()</h2>
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<td class="memname"><a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> densmatr_calcInnerProductLocal </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structQureg.html">Qureg</a> </td>
<td class="paramname"><em>a</em>, </td>
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<p>computes Tr(conjTrans(a) b) = sum of (a_ij^* b_ij) </p>
<p class="definition">Definition at line <a class="el" href="QuEST__cpu_8c_source.html#l00969">969</a> of file <a class="el" href="QuEST__cpu_8c_source.html">QuEST_cpu.c</a>.</p>
<div class="fragment"><div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  {</div>
<div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  </div>
<div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index;</div>
<div class="line"><a name="l00972"></a><span class="lineno"> 972</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numAmps = a.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  </div>
<div class="line"><a name="l00974"></a><span class="lineno"> 974</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> *aRe = a.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real;</div>
<div class="line"><a name="l00975"></a><span class="lineno"> 975</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> *aIm = a.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag;</div>
<div class="line"><a name="l00976"></a><span class="lineno"> 976</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> *bRe = b.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real;</div>
<div class="line"><a name="l00977"></a><span class="lineno"> 977</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> *bIm = b.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag;</div>
<div class="line"><a name="l00978"></a><span class="lineno"> 978</span>  </div>
<div class="line"><a name="l00979"></a><span class="lineno"> 979</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> trace = 0;</div>
<div class="line"><a name="l00980"></a><span class="lineno"> 980</span>  </div>
<div class="line"><a name="l00981"></a><span class="lineno"> 981</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00982"></a><span class="lineno"> 982</span> <span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l00983"></a><span class="lineno"> 983</span> <span class="preprocessor"> shared (aRe,aIm, bRe,bIm, numAmps) \</span></div>
<div class="line"><a name="l00984"></a><span class="lineno"> 984</span> <span class="preprocessor"> private (index) \</span></div>
<div class="line"><a name="l00985"></a><span class="lineno"> 985</span> <span class="preprocessor"> reduction ( +:trace )</span></div>
<div class="line"><a name="l00986"></a><span class="lineno"> 986</span> <span class="preprocessor"># endif </span></div>
<div class="line"><a name="l00987"></a><span class="lineno"> 987</span>  {</div>
<div class="line"><a name="l00988"></a><span class="lineno"> 988</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00989"></a><span class="lineno"> 989</span> <span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l00990"></a><span class="lineno"> 990</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00991"></a><span class="lineno"> 991</span>  <span class="keywordflow">for</span> (index=0LL; index<numAmps; index++) {</div>
<div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  trace += aRe[index]*bRe[index] + aIm[index]*bIm[index];</div>
<div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  }</div>
<div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  }</div>
<div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  </div>
<div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  <span class="keywordflow">return</span> trace;</div>
<div class="line"><a name="l00997"></a><span class="lineno"> 997</span> }</div>
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<p class="reference">References <a class="el" href="QuEST_8h_source.html#l00332">Qureg::numAmpsPerChunk</a>, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>, and <a class="el" href="QuEST_8h_source.html#l00341">Qureg::stateVec</a>.</p>
<p class="reference">Referenced by <a class="el" href="QuEST__cpu__distributed_8c_source.html#l00455">densmatr_calcInnerProduct()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a4b0ef5ab721c43c5bacf957e11a65edf">◆ </a></span>densmatr_calcProbOfAllOutcomesLocal()</h2>
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<td class="memname">void densmatr_calcProbOfAllOutcomesLocal </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> * </td>
<td class="paramname"><em>retProbs</em>, </td>
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<td class="paramtype"><a class="el" href="structQureg.html">Qureg</a> </td>
<td class="paramname"><em>qureg</em>, </td>
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<td class="paramtype">int * </td>
<td class="paramname"><em>qubits</em>, </td>
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<p class="definition">Definition at line <a class="el" href="QuEST__cpu_8c_source.html#l03616">3616</a> of file <a class="el" href="QuEST__cpu_8c_source.html">QuEST_cpu.c</a>.</p>
<div class="fragment"><div class="line"><a name="l03616"></a><span class="lineno"> 3616</span>  {</div>
<div class="line"><a name="l03617"></a><span class="lineno"> 3617</span>  </div>
<div class="line"><a name="l03618"></a><span class="lineno"> 3618</span>  <span class="comment">// clear outcomeProbs (in parallel, in case it's large)</span></div>
<div class="line"><a name="l03619"></a><span class="lineno"> 3619</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numOutcomeProbs = (1 << numQubits);</div>
<div class="line"><a name="l03620"></a><span class="lineno"> 3620</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> j;</div>
<div class="line"><a name="l03621"></a><span class="lineno"> 3621</span>  </div>
<div class="line"><a name="l03622"></a><span class="lineno"> 3622</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l03623"></a><span class="lineno"> 3623</span> <span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l03624"></a><span class="lineno"> 3624</span> <span class="preprocessor"> default (none) \</span></div>
<div class="line"><a name="l03625"></a><span class="lineno"> 3625</span> <span class="preprocessor"> shared (numOutcomeProbs,outcomeProbs) \</span></div>
<div class="line"><a name="l03626"></a><span class="lineno"> 3626</span> <span class="preprocessor"> private (j)</span></div>
<div class="line"><a name="l03627"></a><span class="lineno"> 3627</span> <span class="preprocessor"># endif </span></div>
<div class="line"><a name="l03628"></a><span class="lineno"> 3628</span>  {</div>
<div class="line"><a name="l03629"></a><span class="lineno"> 3629</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l03630"></a><span class="lineno"> 3630</span> <span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l03631"></a><span class="lineno"> 3631</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l03632"></a><span class="lineno"> 3632</span>  <span class="keywordflow">for</span> (j=0; j<numOutcomeProbs; j++)</div>
<div class="line"><a name="l03633"></a><span class="lineno"> 3633</span>  outcomeProbs[j] = 0;</div>
<div class="line"><a name="l03634"></a><span class="lineno"> 3634</span>  } </div>
<div class="line"><a name="l03635"></a><span class="lineno"> 3635</span>  </div>
<div class="line"><a name="l03636"></a><span class="lineno"> 3636</span>  <span class="comment">// compute first local index containing a diagonal element</span></div>
<div class="line"><a name="l03637"></a><span class="lineno"> 3637</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> localNumAmps = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l03638"></a><span class="lineno"> 3638</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> densityDim = (1LL << qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l03639"></a><span class="lineno"> 3639</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> diagSpacing = 1LL + densityDim;</div>
<div class="line"><a name="l03640"></a><span class="lineno"> 3640</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> maxNumDiagsPerChunk = 1 + localNumAmps / diagSpacing;</div>
<div class="line"><a name="l03641"></a><span class="lineno"> 3641</span>  <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>>0)? 1+(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>*localNumAmps)/diagSpacing : 0;</div>
<div class="line"><a name="l03642"></a><span class="lineno"> 3642</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> globalIndNextDiag = diagSpacing * numPrevDiags;</div>
<div class="line"><a name="l03643"></a><span class="lineno"> 3643</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> localIndNextDiag = globalIndNextDiag % localNumAmps;</div>
<div class="line"><a name="l03644"></a><span class="lineno"> 3644</span>  </div>
<div class="line"><a name="l03645"></a><span class="lineno"> 3645</span>  <span class="comment">// computes how many diagonals are contained in this chunk</span></div>
<div class="line"><a name="l03646"></a><span class="lineno"> 3646</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numDiagsInThisChunk = maxNumDiagsPerChunk;</div>
<div class="line"><a name="l03647"></a><span class="lineno"> 3647</span>  <span class="keywordflow">if</span> (localIndNextDiag + (numDiagsInThisChunk-1)*diagSpacing >= localNumAmps)</div>
<div class="line"><a name="l03648"></a><span class="lineno"> 3648</span>  numDiagsInThisChunk -= 1;</div>
<div class="line"><a name="l03649"></a><span class="lineno"> 3649</span>  </div>
<div class="line"><a name="l03650"></a><span class="lineno"> 3650</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> visitedDiags; <span class="comment">// number of visited diagonals in this chunk so far</span></div>
<div class="line"><a name="l03651"></a><span class="lineno"> 3651</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> basisStateInd; <span class="comment">// current diagonal index being considered</span></div>
<div class="line"><a name="l03652"></a><span class="lineno"> 3652</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index; <span class="comment">// index in the local chunk</span></div>
<div class="line"><a name="l03653"></a><span class="lineno"> 3653</span>  </div>
<div class="line"><a name="l03654"></a><span class="lineno"> 3654</span>  <span class="keywordtype">int</span> q;</div>
<div class="line"><a name="l03655"></a><span class="lineno"> 3655</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> outcomeInd;</div>
<div class="line"><a name="l03656"></a><span class="lineno"> 3656</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> *stateRe = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real;</div>
<div class="line"><a name="l03657"></a><span class="lineno"> 3657</span>  </div>
<div class="line"><a name="l03658"></a><span class="lineno"> 3658</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l03659"></a><span class="lineno"> 3659</span> <span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l03660"></a><span class="lineno"> 3660</span> <span class="preprocessor"> shared (localIndNextDiag, numPrevDiags, diagSpacing, stateRe, numDiagsInThisChunk, qubits,numQubits, outcomeProbs) \</span></div>
<div class="line"><a name="l03661"></a><span class="lineno"> 3661</span> <span class="preprocessor"> private (visitedDiags, basisStateInd, index, q,outcomeInd)</span></div>
<div class="line"><a name="l03662"></a><span class="lineno"> 3662</span> <span class="preprocessor"># endif </span></div>
<div class="line"><a name="l03663"></a><span class="lineno"> 3663</span>  {</div>
<div class="line"><a name="l03664"></a><span class="lineno"> 3664</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l03665"></a><span class="lineno"> 3665</span> <span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l03666"></a><span class="lineno"> 3666</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l03667"></a><span class="lineno"> 3667</span>  <span class="comment">// sums the diagonal elems of the density matrix where measureQubit=0</span></div>
<div class="line"><a name="l03668"></a><span class="lineno"> 3668</span>  <span class="keywordflow">for</span> (visitedDiags = 0; visitedDiags < numDiagsInThisChunk; visitedDiags++) {</div>
<div class="line"><a name="l03669"></a><span class="lineno"> 3669</span>  </div>
<div class="line"><a name="l03670"></a><span class="lineno"> 3670</span>  basisStateInd = numPrevDiags + visitedDiags;</div>
<div class="line"><a name="l03671"></a><span class="lineno"> 3671</span>  index = localIndNextDiag + diagSpacing * visitedDiags;</div>
<div class="line"><a name="l03672"></a><span class="lineno"> 3672</span>  </div>
<div class="line"><a name="l03673"></a><span class="lineno"> 3673</span>  <span class="comment">// determine outcome implied by basisStateInd</span></div>
<div class="line"><a name="l03674"></a><span class="lineno"> 3674</span>  outcomeInd = 0;</div>
<div class="line"><a name="l03675"></a><span class="lineno"> 3675</span>  <span class="keywordflow">for</span> (q=0; q<numQubits; q++)</div>
<div class="line"><a name="l03676"></a><span class="lineno"> 3676</span>  outcomeInd += <a class="code" href="QuEST__gpu_8cu.html#aec1852e1a8e70d3690919ce8ab551ba0">extractBit</a>(qubits[q], basisStateInd) * (1LL << q);</div>
<div class="line"><a name="l03677"></a><span class="lineno"> 3677</span>  </div>
<div class="line"><a name="l03678"></a><span class="lineno"> 3678</span>  <span class="comment">// atomicly update corresponding outcome array element</span></div>
<div class="line"><a name="l03679"></a><span class="lineno"> 3679</span> <span class="preprocessor"> # ifdef _OPENMP</span></div>
<div class="line"><a name="l03680"></a><span class="lineno"> 3680</span> <span class="preprocessor"> # pragma omp atomic</span></div>
<div class="line"><a name="l03681"></a><span class="lineno"> 3681</span> <span class="preprocessor"> # endif</span></div>
<div class="line"><a name="l03682"></a><span class="lineno"> 3682</span>  outcomeProbs[outcomeInd] += stateRe[index];</div>
<div class="line"><a name="l03683"></a><span class="lineno"> 3683</span>  }</div>
<div class="line"><a name="l03684"></a><span class="lineno"> 3684</span>  }</div>
<div class="line"><a name="l03685"></a><span class="lineno"> 3685</span> }</div>
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<p class="reference">References <a class="el" href="QuEST_8h_source.html#l00336">Qureg::chunkId</a>, <a class="el" href="QuEST__gpu_8cu_source.html#l00082">extractBit()</a>, <a class="el" href="QuEST_8h_source.html#l00332">Qureg::numAmpsPerChunk</a>, <a class="el" href="QuEST_8h_source.html#l00327">Qureg::numQubitsRepresented</a>, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>, and <a class="el" href="QuEST_8h_source.html#l00341">Qureg::stateVec</a>.</p>
<p class="reference">Referenced by <a class="el" href="QuEST__cpu__distributed_8c_source.html#l01349">densmatr_calcProbOfAllOutcomes()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#af910c7cf2b85bdc2c399cfe8dbfb8b9c">◆ </a></span>densmatr_calcPurityLocal()</h2>
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<td class="memname"><a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> densmatr_calcPurityLocal </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structQureg.html">Qureg</a> </td>
<td class="paramname"><em>qureg</em></td><td>)</td>
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<p class="definition">Definition at line <a class="el" href="QuEST__cpu_8c_source.html#l00872">872</a> of file <a class="el" href="QuEST__cpu_8c_source.html">QuEST_cpu.c</a>.</p>
<div class="fragment"><div class="line"><a name="l00872"></a><span class="lineno"> 872</span>  {</div>
<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  </div>
<div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  <span class="comment">/* sum of qureg^2, which is sum_i |qureg[i]|^2 */</span></div>
<div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index;</div>
<div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numAmps = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l00877"></a><span class="lineno"> 877</span>  </div>
<div class="line"><a name="l00878"></a><span class="lineno"> 878</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> trace = 0;</div>
<div class="line"><a name="l00879"></a><span class="lineno"> 879</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> *vecRe = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real;</div>
<div class="line"><a name="l00880"></a><span class="lineno"> 880</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> *vecIm = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag;</div>
<div class="line"><a name="l00881"></a><span class="lineno"> 881</span>  </div>
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00883"></a><span class="lineno"> 883</span> <span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span> <span class="preprocessor"> shared (vecRe, vecIm, numAmps) \</span></div>
<div class="line"><a name="l00885"></a><span class="lineno"> 885</span> <span class="preprocessor"> private (index) \</span></div>
<div class="line"><a name="l00886"></a><span class="lineno"> 886</span> <span class="preprocessor"> reduction ( +:trace )</span></div>
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span> <span class="preprocessor"># endif </span></div>
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  {</div>
<div class="line"><a name="l00889"></a><span class="lineno"> 889</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span> <span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  <span class="keywordflow">for</span> (index=0LL; index<numAmps; index++) {</div>
<div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  </div>
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  trace += vecRe[index]*vecRe[index] + vecIm[index]*vecIm[index];</div>
<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  }</div>
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  }</div>
<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  </div>
<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  <span class="keywordflow">return</span> trace;</div>
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span> }</div>
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<p class="reference">References <a class="el" href="QuEST_8h_source.html#l00332">Qureg::numAmpsPerChunk</a>, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>, and <a class="el" href="QuEST_8h_source.html#l00341">Qureg::stateVec</a>.</p>
<p class="reference">Referenced by <a class="el" href="QuEST__cpu__distributed_8c_source.html#l01358">densmatr_calcPurity()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a8bea931504c90d9bd97e74645667804e">◆ </a></span>densmatr_findProbabilityOfZeroLocal()</h2>
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<td class="memname"><a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> densmatr_findProbabilityOfZeroLocal </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structQureg.html">Qureg</a> </td>
<td class="paramname"><em>qureg</em>, </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>measureQubit</em> </td>
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<p class="definition">Definition at line <a class="el" href="QuEST__cpu_8c_source.html#l03402">3402</a> of file <a class="el" href="QuEST__cpu_8c_source.html">QuEST_cpu.c</a>.</p>
<div class="fragment"><div class="line"><a name="l03402"></a><span class="lineno"> 3402</span>  {</div>
<div class="line"><a name="l03403"></a><span class="lineno"> 3403</span>  </div>
<div class="line"><a name="l03404"></a><span class="lineno"> 3404</span>  <span class="comment">// computes first local index containing a diagonal element</span></div>
<div class="line"><a name="l03405"></a><span class="lineno"> 3405</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> localNumAmps = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l03406"></a><span class="lineno"> 3406</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> densityDim = (1LL << qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l03407"></a><span class="lineno"> 3407</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> diagSpacing = 1LL + densityDim;</div>
<div class="line"><a name="l03408"></a><span class="lineno"> 3408</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> maxNumDiagsPerChunk = 1 + localNumAmps / diagSpacing;</div>
<div class="line"><a name="l03409"></a><span class="lineno"> 3409</span>  <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>>0)? 1+(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>*localNumAmps)/diagSpacing : 0;</div>
<div class="line"><a name="l03410"></a><span class="lineno"> 3410</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> globalIndNextDiag = diagSpacing * numPrevDiags;</div>
<div class="line"><a name="l03411"></a><span class="lineno"> 3411</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> localIndNextDiag = globalIndNextDiag % localNumAmps;</div>
<div class="line"><a name="l03412"></a><span class="lineno"> 3412</span>  </div>
<div class="line"><a name="l03413"></a><span class="lineno"> 3413</span>  <span class="comment">// computes how many diagonals are contained in this chunk</span></div>
<div class="line"><a name="l03414"></a><span class="lineno"> 3414</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numDiagsInThisChunk = maxNumDiagsPerChunk;</div>
<div class="line"><a name="l03415"></a><span class="lineno"> 3415</span>  <span class="keywordflow">if</span> (localIndNextDiag + (numDiagsInThisChunk-1)*diagSpacing >= localNumAmps)</div>
<div class="line"><a name="l03416"></a><span class="lineno"> 3416</span>  numDiagsInThisChunk -= 1;</div>
<div class="line"><a name="l03417"></a><span class="lineno"> 3417</span>  </div>
<div class="line"><a name="l03418"></a><span class="lineno"> 3418</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> visitedDiags; <span class="comment">// number of visited diagonals in this chunk so far</span></div>
<div class="line"><a name="l03419"></a><span class="lineno"> 3419</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> basisStateInd; <span class="comment">// current diagonal index being considered</span></div>
<div class="line"><a name="l03420"></a><span class="lineno"> 3420</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index; <span class="comment">// index in the local chunk</span></div>
<div class="line"><a name="l03421"></a><span class="lineno"> 3421</span>  </div>
<div class="line"><a name="l03422"></a><span class="lineno"> 3422</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> zeroProb = 0;</div>
<div class="line"><a name="l03423"></a><span class="lineno"> 3423</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> *stateVecReal = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real;</div>
<div class="line"><a name="l03424"></a><span class="lineno"> 3424</span>  </div>
<div class="line"><a name="l03425"></a><span class="lineno"> 3425</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l03426"></a><span class="lineno"> 3426</span> <span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l03427"></a><span class="lineno"> 3427</span> <span class="preprocessor"> shared (localIndNextDiag, numPrevDiags, diagSpacing, stateVecReal, numDiagsInThisChunk) \</span></div>
<div class="line"><a name="l03428"></a><span class="lineno"> 3428</span> <span class="preprocessor"> private (visitedDiags, basisStateInd, index) \</span></div>
<div class="line"><a name="l03429"></a><span class="lineno"> 3429</span> <span class="preprocessor"> reduction ( +:zeroProb )</span></div>
<div class="line"><a name="l03430"></a><span class="lineno"> 3430</span> <span class="preprocessor"># endif </span></div>
<div class="line"><a name="l03431"></a><span class="lineno"> 3431</span>  {</div>
<div class="line"><a name="l03432"></a><span class="lineno"> 3432</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l03433"></a><span class="lineno"> 3433</span> <span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l03434"></a><span class="lineno"> 3434</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l03435"></a><span class="lineno"> 3435</span>  <span class="comment">// sums the diagonal elems of the density matrix where measureQubit=0</span></div>
<div class="line"><a name="l03436"></a><span class="lineno"> 3436</span>  <span class="keywordflow">for</span> (visitedDiags = 0; visitedDiags < numDiagsInThisChunk; visitedDiags++) {</div>
<div class="line"><a name="l03437"></a><span class="lineno"> 3437</span>  </div>
<div class="line"><a name="l03438"></a><span class="lineno"> 3438</span>  basisStateInd = numPrevDiags + visitedDiags;</div>
<div class="line"><a name="l03439"></a><span class="lineno"> 3439</span>  index = localIndNextDiag + diagSpacing * visitedDiags;</div>
<div class="line"><a name="l03440"></a><span class="lineno"> 3440</span>  </div>
<div class="line"><a name="l03441"></a><span class="lineno"> 3441</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__gpu_8cu.html#aec1852e1a8e70d3690919ce8ab551ba0">extractBit</a>(measureQubit, basisStateInd) == 0)</div>
<div class="line"><a name="l03442"></a><span class="lineno"> 3442</span>  zeroProb += stateVecReal[index]; <span class="comment">// assume imag[diagonls] ~ 0</span></div>
<div class="line"><a name="l03443"></a><span class="lineno"> 3443</span>  </div>
<div class="line"><a name="l03444"></a><span class="lineno"> 3444</span>  }</div>
<div class="line"><a name="l03445"></a><span class="lineno"> 3445</span>  }</div>
<div class="line"><a name="l03446"></a><span class="lineno"> 3446</span>  </div>
<div class="line"><a name="l03447"></a><span class="lineno"> 3447</span>  <span class="keywordflow">return</span> zeroProb;</div>
<div class="line"><a name="l03448"></a><span class="lineno"> 3448</span> }</div>
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<p class="reference">References <a class="el" href="QuEST_8h_source.html#l00336">Qureg::chunkId</a>, <a class="el" href="QuEST__gpu_8cu_source.html#l00082">extractBit()</a>, <a class="el" href="QuEST_8h_source.html#l00332">Qureg::numAmpsPerChunk</a>, <a class="el" href="QuEST_8h_source.html#l00327">Qureg::numQubitsRepresented</a>, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>, and <a class="el" href="QuEST_8h_source.html#l00341">Qureg::stateVec</a>.</p>
<p class="reference">Referenced by <a class="el" href="QuEST__cpu__distributed_8c_source.html#l01328">densmatr_calcProbOfOutcome()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a1b36518c8fbbc3a5084bb4ad1fb05ea5">◆ </a></span>densmatr_initPureStateLocal()</h2>
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<td class="memname">void densmatr_initPureStateLocal </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structQureg.html">Qureg</a> </td>
<td class="paramname"><em>targetQureg</em>, </td>
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<td></td>
<td class="paramtype"><a class="el" href="structQureg.html">Qureg</a> </td>
<td class="paramname"><em>copyQureg</em> </td>
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<p class="definition">Definition at line <a class="el" href="QuEST__cpu_8c_source.html#l01195">1195</a> of file <a class="el" href="QuEST__cpu_8c_source.html">QuEST_cpu.c</a>.</p>
<div class="fragment"><div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>  {</div>
<div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>  </div>
<div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>  <span class="comment">/* copyQureg amps aren't explicitly used - they're accessed through targetQureg.pair,</span></div>
<div class="line"><a name="l01198"></a><span class="lineno"> 1198</span> <span class="comment"> * which contains the full pure statevector.</span></div>
<div class="line"><a name="l01199"></a><span class="lineno"> 1199</span> <span class="comment"> * targetQureg has as many columns on node as copyQureg has amps</span></div>
<div class="line"><a name="l01200"></a><span class="lineno"> 1200</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>  </div>
<div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> colOffset = targetQureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a> * copyQureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> colsPerNode = copyQureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> rowsPerNode = copyQureg.<a class="code" href="structQureg.html#adef4935cac95763c29164cf99b144ed4">numAmpsTotal</a>;</div>
<div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>  </div>
<div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>  <span class="comment">// unpack vars for OpenMP</span></div>
<div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* vecRe = targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real;</div>
<div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* vecIm = targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag;</div>
<div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* densRe = targetQureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real;</div>
<div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* densIm = targetQureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag;</div>
<div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>  </div>
<div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> col, row, index;</div>
<div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>  </div>
<div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>  <span class="comment">// a_i conj(a_j) |i><j|</span></div>
<div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> ketRe, ketIm, braRe, braIm;</div>
<div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>  </div>
<div class="line"><a name="l01217"></a><span class="lineno"> 1217</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l01218"></a><span class="lineno"> 1218</span> <span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l01219"></a><span class="lineno"> 1219</span> <span class="preprocessor"> default (none) \</span></div>
<div class="line"><a name="l01220"></a><span class="lineno"> 1220</span> <span class="preprocessor"> shared (colOffset, colsPerNode,rowsPerNode, vecRe,vecIm,densRe,densIm) \</span></div>
<div class="line"><a name="l01221"></a><span class="lineno"> 1221</span> <span class="preprocessor"> private (col,row, ketRe,ketIm,braRe,braIm, index) </span></div>
<div class="line"><a name="l01222"></a><span class="lineno"> 1222</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l01223"></a><span class="lineno"> 1223</span>  {</div>
<div class="line"><a name="l01224"></a><span class="lineno"> 1224</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l01225"></a><span class="lineno"> 1225</span> <span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l01226"></a><span class="lineno"> 1226</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>  <span class="comment">// local column</span></div>
<div class="line"><a name="l01228"></a><span class="lineno"> 1228</span>  <span class="keywordflow">for</span> (col=0; col < colsPerNode; col++) {</div>
<div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>  </div>
<div class="line"><a name="l01230"></a><span class="lineno"> 1230</span>  <span class="comment">// global row</span></div>
<div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>  <span class="keywordflow">for</span> (row=0; row < rowsPerNode; row++) {</div>
<div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>  </div>
<div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>  <span class="comment">// get pure state amps</span></div>
<div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>  ketRe = vecRe[row];</div>
<div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>  ketIm = vecIm[row];</div>
<div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>  braRe = vecRe[col + colOffset];</div>
<div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>  braIm = - vecIm[col + colOffset]; <span class="comment">// minus for conjugation</span></div>
<div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>  </div>
<div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>  <span class="comment">// update density matrix</span></div>
<div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>  index = row + col*rowsPerNode; <span class="comment">// local ind</span></div>
<div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>  densRe[index] = ketRe*braRe - ketIm*braIm;</div>
<div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>  densIm[index] = ketRe*braIm + ketIm*braRe;</div>
<div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>  }</div>
<div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>  }</div>
<div class="line"><a name="l01245"></a><span class="lineno"> 1245</span>  }</div>
<div class="line"><a name="l01246"></a><span class="lineno"> 1246</span> }</div>
</div><!-- fragment -->
<p class="reference">References <a class="el" href="QuEST_8h_source.html#l00336">Qureg::chunkId</a>, <a class="el" href="QuEST_8h_source.html#l00332">Qureg::numAmpsPerChunk</a>, <a class="el" href="QuEST_8h_source.html#l00334">Qureg::numAmpsTotal</a>, <a class="el" href="QuEST_8h_source.html#l00343">Qureg::pairStateVec</a>, <a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>, and <a class="el" href="QuEST_8h_source.html#l00341">Qureg::stateVec</a>.</p>
<p class="reference">Referenced by <a class="el" href="QuEST__cpu__distributed_8c_source.html#l00466">densmatr_initPureState()</a>.</p>
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<a id="a8d9c19a3424f0ad89bfbfd920d65301d"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a8d9c19a3424f0ad89bfbfd920d65301d">◆ </a></span>densmatr_mixDampingDistributed()</h2>
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<td class="memname">void densmatr_mixDampingDistributed </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structQureg.html">Qureg</a> </td>
<td class="paramname"><em>qureg</em>, </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>targetQubit</em>, </td>
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<td></td>
<td class="paramtype"><a class="el" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> </td>
<td class="paramname"><em>damping</em> </td>
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<td>)</td>
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<p class="definition">Definition at line <a class="el" href="QuEST__cpu_8c_source.html#l00306">306</a> of file <a class="el" href="QuEST__cpu_8c_source.html">QuEST_cpu.c</a>.</p>
<div class="fragment"><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  {</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> retain=1-damping;</div>