armcrm - Critical pressure coefficient given Mcrit

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3.4.1 armcrm - Critical pressure coefficient given $Mcrit$

double armcrm(double g, double mcrit, int *ierr);

Compute given the critical pressure coefficient given $Mcrit$ .

Performance
Fixed

Arguments

G - REAL: ENTRY: Specific heat constant $γ$ .
MCRIT - REAL: ENTRY: Critical Mach number $0 <M <1 crit$ .
IERR - INTEGER: EXIT: (optional) Return status code.

Status codes

-1: Specific heat ratio $γ≤ 1$ .
-2: Given $Mcrit$ out of range.

Return Value
Critical pressure coefficient $Cp$ or NAN on error.

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