DISNAN(3)      LAPACK routine of NEC Numeric Library Collection      DISNAN(3)



NAME
       DISNAN

SYNOPSIS
       LOGICAL FUNCTION DISNAN (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)
                     DIN is DOUBLE PRECISION
                     Input to test for NaN.



LAPACK routine                  31 October 2017                      DISNAN(3)