ultrix man page for isnan

Query: isnan

OS: ultrix

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

isnan(3)						     Library Functions Manual							  isnan(3)

Name
       isnan - test for NaN

Syntax
       #include <math.h>

       int isnan (x)
       double x;

Description
       The  function  returns 1 if x is NaN (the IEEE floating point reserved not-a-number value) and zero otherwise.  On VAX, the return value is
       always zero.

																	  isnan(3)
Related Man Pages
isnan(3m) - opensolaris
isinf(3) - mojave
isnan(3) - netbsd
finite(3) - freebsd
isnormal(3) - freebsd
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