NAME
DISNAN - returns .TRUE
SYNOPSIS
- LOGICAL FUNCTION
-
DISNAN(DIN)
- DOUBLE
-
PRECISION DIN
PURPOSE
DISNAN returns .TRUE. if its argument is NaN, and .FALSE. otherwise. To be replaced by the Fortran 2003 intrinsic in the future.
ARGUMENTS
- DIN (input) DOUBLE PRECISION
-
Input to test for NaN.