Function applyMultiStateControlledRotateZ

quest/src/api/operations.cpp:1116–1129

}

void applyMultiStateControlledRotateZ(Qureg qureg, int* controls, int* states, int numControls, int target, qreal angle) {
    validate_quregFields(qureg, __func__);
    validate_controlsAndTarget(qureg, controls, numControls, target, __func__);
    validate_controlStates(states, numControls, __func__); // permits states==nullptr

    // note that for the single-target scenario, we do not call the backend of
    // applyMultiStateControlledPauliGadget() since it contains sub-optimal logic
    // which sees the factor of every amplitude dynamically evaluated (based on
    // index parity, etc); the dense-matrix element lookup is faster

    // harmlessly re-validates, including hardcoded matrix unitarity
    DiagMatr1 matrix = util_getExpPauliZ(angle);
    validateAndApplyAnyCtrlAnyTargUnitaryMatrix(qureg, controls, states, numControls, &target, 1, matrix, __func__);
}

} // end de-mangler