| H2a1: | Finite interval (general integrand) | (8 routines) |
| H2a2: | Finite interval (specific or special type integrand including weight functions, oscillating and singular integrands, principal value integrals, splines, etc.) | (12 routines) |
| H2a3: | Semi-infinite interval (including e-x weight function) | (6 routines) |
| H2a4: | Infinite interval (including e-x2 weight function) | (4 routines) |