| g01efc | Probabilities for the gamma distribution |
| g01ffc | Deviates for the gamma distribution |
| g02gdc | Fits a generalized linear model with gamma errors |
| g05ffc | Pseudo-random real numbers from the gamma distribution |
| g05lfc | Generates a vector of random numbers from a γ distribution, seeds and generator number passed explicitly |
| s14aac | Gamma function Gamma (x) |
| s14abc | Log Gamma function ln (Gamma (x)) |
| s14agc | Logarithm of the Gamma function ln Gamma (z) |
| s14bac | Incomplete Gamma functions P(a,x) and Q(a,x) |