This function calculates the derivatives required for an inversion of temperature and density function.
function derivsOf_ph extends Modelica.Icons.Function; input AbsolutePressure p "Pressure"; input SpecificEnthalpy h "Specific enthalpy"; input Integer phase "Number of phases"; output Common.InverseDerivatives_rhoT derivs "Inverse derivatives for density and temperature"; end derivsOf_ph;