disnan(l) - Linux man page

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.