void arfrat(double g, double t, bool tmax, double result[8], int *ierr);
Compute the rayleigh relations given the temperature ratio, 
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| Argument | Intent | Description |
| g | in | Specific heat constant |
| t | in | Temperature ratio |
| tmax | in | Whether the static temperature ratio supplied is for a low speed false or a high speed true. |
| result | out | Array with result properties as described in 5. |
| ierr | out | (optional) Return status code |
Specific heat ratio 
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Computed 
out of range.
Given 
out of range.
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