Function eval_state

src/Tests/CoolProp-Tests-TermCacheProfile.cpp:218–231

Pick a representative single-phase (T, p) state for each benchmark fluid, run the AbstractState through update so tau/delta are well-defined, then return log(tau) and log(delta). Returns false if the state can't be reached.

// AbstractState through update so tau/delta are well-defined, then return log(tau)
// and log(delta).  Returns false if the state can't be reached.
bool eval_state(const std::string& name, double T, double p, double& log_tau, double& log_delta) {
    std::shared_ptr<CoolProp::AbstractState> AS;
    try {
        AS.reset(CoolProp::AbstractState::factory("HEOS", name));
        AS->update(CoolProp::PT_INPUTS, p, T);
    } catch (...) {
        return false;
    }
    const double tau = AS->tau(), delta = AS->delta();
    if (!(tau > 0) || !(delta > 0)) return false;
    log_tau = std::log(tau);
    log_delta = std::log(delta);
    return true;
}

}  // anonymous namespace