| F04JLF | Real general Gauss–Markov linear model (including weighted least-squares) |
| F04JMF | Equality-constrained real linear least-squares problem |
| L8c1: | Ordinary least squares | (14 routines) |
| L8c2: | Several regressions | (1 routine) |
| L8c3: | Lp for p different from 2 | (0 routines) |
| L8c4: | Robust | (4 routines) |
| L8c5: | Measurement error models | (0 routines) |
| L8c6: | Models based on ranks | (2 routines) |