Function validate_unitaryExponentIsReal

quest/src/core/validation.cpp:2443–2455

void validate_matrixIsUnitary(FullStateDiagMatr m, const char* caller) { assertMatrixIsUnitary(m, caller); }

void validate_unitaryExponentIsReal(qcomp exponent, const char* caller) {

    // this validation always checks that 'exponent' is only
    // approximately real, permitting non-zero imaginary
    // component. Functions which require a strictly real
    // exponent never call this; they accept 'qreal' exponents.

    if (isNumericalValidationDisabled())
        return;

    // assesses diag^expo unitarity for any unitary diag
    assertThat(util_isApproxReal(exponent, global_validationEpsilon), report::UNITARY_DIAG_MATR_EXPONENT_NOT_APPROX_REAL, caller);
}

// type T can be CompMatr1, CompMatr2, CompMatr, DiagMatr1, DiagMatr2, DiagMatr, FullStateDiagMatr
template <class T>