| 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) |
| D02UEF | Solve linear constant coefficient boundary value problem on Chebyshev grid, Integral formulation |