| g01eac | nag_prob_normal Probabilities for the standard Normal distribution |
| g01mbc | nag_mills_ratio Computes reciprocal of Mills' Ratio |
| s15abc | nag_cumul_normal Cumulative Normal distribution function P(x) |
| s15acc | nag_cumul_normal_complem Complement of cumulative Normal distribution function Q(x) |