| d03puc | Roe's approximate Riemann solver for Euler equations in conservative form, for use with d03pfc, d03plc and d03psc |
| d03pvc | Osher's approximate Riemann solver for Euler equations in conservative form, for use with d03pfc, d03plc and d03psc |
| d03pwc | Modified HLL Riemann solver for Euler equations in conservative form, for use with d03pfc, d03plc and d03psc |
| d03pxc | Exact Riemann Solver for Euler equations in conservative form, for use with d03pfc, d03plc and d03psc |
| x01abc | Euler's constant, γ |