| D01GAF | One-dimensional quadrature, integration of function defined by data values, Gill–Miller method |
| D02BJF | Ordinary differential equations, initial value problem, Runge–Kutta method, until function of solution is zero, integration over range with intermediate output (simple driver) |
| D02PCF | Ordinary differential equations, initial value problem, Runge–Kutta method, integration over range with output |
| D02PDF | Ordinary differential equations, initial value problem, Runge–Kutta method, integration over one step |
| D02PYF | Ordinary differential equations, initial value problem, integration diagnostics for D02PCF and D02PDF |
| D02UEF | Solve linear constant coefficient boundary value problem on Chebyshev grid, Integral formulation |