NAME

       sisnan.f -

SYNOPSIS

   Functions/Subroutines
       logical function sisnan (SIN)
           SISNAN tests input for NaN.

Function/Subroutine Documentation

   logical function sisnan (realSIN)
       SISNAN tests input for NaN.

       Purpose:

            SISNAN returns .TRUE. if its argument is NaN, and .FALSE.
            otherwise.  To be replaced by the Fortran 2003 intrinsic in the
            future.

       Parameters:
           SIN

                     SIN is REAL
                     Input to test for NaN.

       Author:
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Date:
           September 2012

       Definition at line 60 of file sisnan.f.

Author

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