SUBROUTINE AR13AA(G,M,RESULT,IERR) DOUBLE PRECISION G, M, RESULT(3) INTEGER IERR
Compute the Prandtl-Meyer properties given a mach number 
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| Argument | Intent | Description |
| g | in | Specific heat constant |
| m | in | Mach number |
| result | out | Array with result properties as described in 11. |
| ierr | out | (optional) Return status code |
Specific heat ratio 
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Given 
out of range.
. 
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