arfisd - Isentropic relations given ρ2/ρ1

void arfisd(double g, double r, double result[5], int *ierr);

Compute the isentropic relations given the density ratio $ρ2/ρ1$ .

Performance
Fixed

Arguments

G - REAL: ENTRY: Specific heat constant $γ$ .
R - REAL: ENTRY: Density ratio $0≤ ρ /ρ ≤1 2 1$ .
RESULT - ARRAY OF REAL: EXIT: Array with result properties as described in 3.
IERR - INTEGER: EXIT: (optional) Return status code.

Status codes