| g2pitauDerivative of g w.r.t. pi and tau |  | 
| p | Type: Pressure (Pa) Description: Pressure | 
|---|---|
| T | Type: Temperature (K) Description: Temperature (K) | 
| pi | Type: Real Description: Dimensionless pressure | 
|---|---|
| tau | Type: Real Description: Dimensionless temperature | 
| gpi | Type: Real Description: Dimensionless derivative of Gibbs function w.r.t. pi | 
| gtau | Type: Real Description: Dimensionless derivative of Gibbs function w.r.t. tau |