Function applyMultiQubitPhaseFlip

quest/src/api/operations.cpp:1464–1473

}

void applyMultiQubitPhaseFlip(Qureg qureg, int* targets, int numTargets) {
    validate_quregFields(qureg, __func__);
    validate_targets(qureg, targets, numTargets, __func__);

    // treat as a (numTargets-1)-controlled 1-target Pauli Z
    DiagMatr1 matr = getDiagMatr1({1, -1});

    // harmlessly re-validates
    applyMultiStateControlledDiagMatr1(qureg, &targets[1], nullptr, numTargets-1, targets[0], matr);
}

} // end de-mangler