| g01efc | Probabilities for the gamma distribution |
| g01ffc | Deviates for the gamma distribution |
| g01kfc | Calculates the value for the probability density function of the gamma distribution at a chosen point |
| g01kkc | Calculates a vector of values for the probability density function of the gamma distribution at chosen points |
| g01sfc | Computes a vector of probabilities for the gamma distribution |
| g01tfc | Computes a vector of deviates for the gamma distribution |
| g02gdc | Fits a generalized linear model with gamma errors |
| g05sjc | Generates a vector of pseudorandom numbers from a gamma distribution |
| s14aac | Gamma function Γ(x) |
| s14abc | Log gamma function ln(Γ(x)) |
| s14agc | Logarithm of the gamma function lnΓ(z), complex argument |
| s14ahc | Scaled log gamma function lnG(x), where G(x) = Γ(x + 1) / (x / e)x |
| s14bac | Incomplete gamma functions P(a,x) and Q(a,x) |