| D02LZF | Second-order ordinary differential equations, initial value problem, interpolation for D02LAF |
| D02MZF | Ordinary differential equations, initial value problem, interpolation for D02M–N routines (all integration methods), natural interpolant |
| D02PXF | Ordinary differential equations, initial value problem, interpolation for D02PDF |
| D02QZF | Ordinary differential equations, initial value problem, interpolation for D02QFF or D02QGF |
| D02TYF | Ordinary differential equations, general nonlinear boundary value problem, interpolation for D02TKF |
| D02UWF | Interpolate a function from Chebyshev grid to uniform grid using barycentric Lagrange interpolation |
| D02XJF | Ordinary differential equations, initial value problem, interpolation for D02M–N routines (BLEND and BDF methods only), natural interpolant |
| D02XKF | Ordinary differential equations, initial value problem, interpolation for D02M–N routines, C1 interpolant |
| D03PYF | PDEs, spatial interpolation with D03PDF or D03PJF |
| D03PZF | PDEs, spatial interpolation with D03PCF, D03PEF, D03PFF, D03PHF, D03PKF, D03PLF, D03PPF, D03PRF or D03PSF |
| E01SHF | Interpolated values, evaluate interpolant computed by E01SGF, function and first derivatives, two variables |
| E01TGF | Interpolating functions, modified Shepard's method, three variables |
| E01THF | Interpolated values, evaluate interpolant computed by E01TGF, function and first derivatives, three variables |
| E01TKF | Interpolating functions, modified Shepard's method, four variables |
| E01TLF | Interpolated values, evaluate interpolant computed by E01TKF, function and first derivatives, four variables |
| E01TMF | Interpolating functions, modified Shepard's method, five variables |
| E01TNF | Interpolated values, evaluate interpolant computed by E01TMF, function and first derivatives, five variables |
| E02AFF | Least squares polynomial fit, special data points (including interpolation) |
| E02BAF | Least squares curve cubic spline fit (including interpolation) |