Temperature as function of pressure and temperature
function s_pT extends Modelica.Icons.Function; input Modelica.SIunits.Pressure p "Pressure"; input Modelica.SIunits.Temperature T "Temperature"; input Integer region = 0 "If 0, region is unknown, otherwise known and this input"; output Modelica.SIunits.SpecificEntropy s "Specific entropy"; end s_pT;