Is there a standard way to check for Infinite and NaN in Fortran 90/95?

Question

I\'ve been trying to find a standards-compliant way to check for Infinite and NaN values in Fortran 90/95 but it proved harder than I thought.

• I tried to manua

Answer 1

No.

The salient parts of IEEE_ARITHMETIC for generating/checking for NaN's are easy enough to write for gfortran for a particular architecture.