Method call

src/Backends/PCSAFT/PCSAFTBackend.cpp:2758–2766

        SolverRhoResid(PCSAFTBackend& PCSAFT, CoolPropDbl T, CoolPropDbl p) : PCSAFT(PCSAFT), T(T), p(p) {}
        CoolPropDbl call(CoolPropDbl rhomolar) override {
            CoolPropDbl peos = PCSAFT.update_DmolarT(rhomolar);
            double cost = (peos - p) / p;
            if (ValidNumber(cost)) {
                return cost;
            } else {
                return 1.0e20;
            }
        };
    };

    SolverRhoResid resid(*this, T, p);