| e01bac | Interpolating function, cubic spline interpolant, one variable |
| e01dac | Interpolating function, bicubic spline interpolant, two variables |
| e02bac | Least squares curve cubic spline fit (including interpolation), one variable |
| e02bbc | Evaluation of fitted cubic spline, function only |
| e02bcc | Evaluation of fitted cubic spline, function and derivatives |
| e02bdc | Evaluation of fitted cubic spline, definite integral |
| e02bec | Least squares cubic spline curve fit, automatic knot placement, one variable |
| e02dac | Least squares surface fit, bicubic splines |
| e02dcc | Least squares bicubic spline fit with automatic knot placement, two variables (rectangular grid) |
| e02ddc | Least squares bicubic spline fit with automatic knot placement, two variables (scattered data) |
| e02dec | Evaluation of bicubic spline, at a set of points |
| e02dfc | Evaluation of bicubic spline, at a mesh of points |
| e02dhc | Evaluation of spline surface at mesh of points with derivatives |
| e02zac | Sort two-dimensional data into panels for fitting bicubic splines |
| g10abc | Fit cubic smoothing spline, smoothing parameter given |
| g10acc | Fit cubic smoothing spline, smoothing parameter estimated |