void arsefm(double g, double m1, double m2, double result[5], int *ierr);
Compute the expansion fan properties given and .
ENTRY: Specific heat constant .
ENTRY: Upstream mach number .
ENTRY: Downstream mach number .
EXIT: Array with result properties as described in 12.
EXIT: (optional) Return status code.
Specific heat ratio .
Given or out of range.