public SpecificEntropy smass() { if (Environment.Is64BitProcess) { return(SpecificEntropy.FromJoulesPerKilogramKelvin(CoolPropPINVOKE64.AbstractState_smass(swigCPtr))); } else { return(SpecificEntropy.FromJoulesPerKilogramKelvin(CoolPropPINVOKE.AbstractState_smass(swigCPtr))); } }