Computes density as a function of pressure and temperature
function density_pT extends Modelica.Icons.Function; input AbsolutePressure p "Pressure"; input Temperature T "Temperature"; input FixedPhase phase = 0 "2 for two-phase, 1 for one-phase, 0 if not known"; input Integer region = Region "If 0, region is unknown, otherwise known and this input"; output Density d "Density"; end density_pT;