| G01BKF | Poisson distribution function |
| G02GCF | Fits a generalized linear model with Poisson errors |
| G05MEF | Generates a vector of random integers from a Poisson distribution with varying mean, seeds and generator number passed explicitly |
| G05MKF | Generates a vector of random integers from a Poisson distribution, seeds and generator number passed explicitly |
| G07ABF | Computes confidence interval for the parameter of a Poisson distribution |