The error message in Cygwin looks like:
nan=0d10/0.
^
Division by 0 (zero) at (^) (IEEE not yet supported)
I checked the GNU web site. It says GFortran supports isNaN() function. I think g77 does not support it.
In Solaris, I can write a function similar to isNaN(), because IEEE Not-a-number is supported.
The intel & imsl also has this FORTRAN intrinsic.
What should I do in Cygwin with g77?
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