partial function speedOfSound_psxi extends TILMedia.BaseClasses.PartialVLEFluidObjectFunction; input SI.AbsolutePressure p "Pressure"; input SI.SpecificEntropy s "Specific entropy"; input SI.MassFraction[:] xi "Mass fractions of the first nc-1 components"; input TILMedia.Internals.TILMediaExternalObject vleFluidPointer; output SI.Velocity w "Speed of sound"; end speedOfSound_psxi;