Return thermodynamic state record from p and s
function setState_psX extends Modelica.Icons.Function; input AbsolutePressure p "pressure"; input SpecificEntropy s "specific entropy"; input MassFraction X[nX] "Mass fractions"; input Integer phase = 1 "2 for two-phase, 1 for one-phase, 0 if not known"; output ThermodynamicState state; end setState_psX;