IRM_RESULT GetGasPhaseVolume(std::vector<double>& gas_pressure); IRM_RESULT setGasPhaseVolume(const std::vector<double>& gas_pressure); IRM_RESULT GetGasCompMoles(std::vector<double>& gas_moles); IRM_RESULT GetGasCompPressures(std::vector<double>& gas_pressure); IRM_RESULT GetGasCompPhi(std::vector<double>& gas_phi); IRM_RESULT SetGasCompMoles(const std::vector<double>& gas_moles);