3.13.5 arspmfm - Prandtl-Meyer angle from

DOUBLE PRECISION FUNCTION AR13AD(G,M)
  DOUBLE PRECISION G, M

Computes the Prandtl-Meyer angle from the given mach number .

Performance
Fixed

Arguments

G - REAL

ENTRY: Specific heat constant .

M - REAL

ENTRY: Mach number .

Return value
This function returns the Prandtl-Meyer angle for the given mach number or NAN (Not-a-Number) if an error has occurred).