## Copyright © EDF 2002 - 2025
## ThermoSysPro Version 4.2
function dd1Tp_PT input Units.SI.AbsolutePressure p "Pressure"; input Units.SI.Temperature T "temperature"; output Units.SI.DerDensityByTemperature ddTp "Derivative of density wrt. temperature at constant pressure"; end dd1Tp_PT;