disnan.f man page

logical function disnan (DIN)
DISNAN tests input for NaN.

DISNAN tests input for NaN.  

Purpose:

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

Parameters:

DIN

          DIN is DOUBLE PRECISION
          Input to test for NaN.

Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

June 2017

Definition at line 61 of file disnan.f.