| D03PUF | Roe's approximate Riemann solver for Euler equations in conservative form, for use with D03PFF, D03PLF and D03PSF |
| D03PVF | Osher's approximate Riemann solver for Euler equations in conservative form, for use with D03PFF, D03PLF and D03PSF |
| D03PWF | Modified HLL Riemann solver for Euler equations in conservative form, for use with D03PFF, D03PLF and D03PSF |
| D03PXF | Exact Riemann Solver for Euler equations in conservative form, for use with D03PFF, D03PLF and D03PSF |
| X01ABF | Provides the mathematical constant γ (Euler's Constant) |