Function getExponentialOfPauliMatrix

tests/deprecated/test_utilities.cpp:329–333

}

QMatrix getExponentialOfPauliMatrix(qreal angle, QMatrix a) {
    QMatrix iden = getIdentityMatrix(a.size());
    QMatrix expo = (cos(angle/2) * iden) + ((qcomp) -1i * sin(angle/2) * a);
    return expo;
}

void setSubMatrix(QMatrix &dest, QMatrix sub, size_t r, size_t c) {
    DEMAND( sub.size() + r <= dest.size() );