double armcrm(double g, double mcrit, int *ierr);
Compute given the critical pressure coefficient given 
.
| Argument | Intent | Description |
| g | in | Specific heat constant |
| mcrit | in | Critical Mach number |
| ierr | out | (optional) Return status code |
Specific heat ratio 
.
Given 
out of range.
Return Value
Critical pressure coefficient 
or NAN on error.
. 
.