Method smass_idealgas

src/AbstractState.cpp:725–727

    return gas_constant() * (tau() * dalpha0_dTau() - alpha0());
}
double AbstractState::smass_idealgas() {
    return smolar_idealgas() / molar_mass();
}
double AbstractState::neff() {
    const double tau = calc_T_reducing() / _T;
    const double delta = _rhomolar / calc_rhomolar_reducing();