| e01aec | Interpolating functions, polynomial interpolant, data may include derivative values, one variable |
| e01bgc | Evaluation of interpolant computed by e01bec, function and first derivative |
| e02ahc | Derivative of fitted polynomial in Chebyshev series form |
| e04yac | Least-squares derivative checker for use with e04gbc |
| g01rtc | Landau derivative function phi ' (λ) |
| s14aec | Derivative of the psi function ψ (x) |
| s14afc | Derivative of the psi function ψ (z) |