function setState_psX_der input AbsolutePressure p "Pressure"; input SpecificEntropy s "Specific entropy"; input MassFraction X[:] = reference_X "Mass fractions"; input FixedPhase phase = 0 "2 for two-phase, 1 for one-phase, 0 if not known"; input Real der_p "Time derivative of pressure"; input Real der_s "Time derivative of specific entropy"; input Real der_X[:] "Time derivative of mass fractions"; output ThermodynamicState der_state "Time derivative of thermodynamic state"; end setState_psX_der;