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isinf(3M)

ISNAN(3M)  —  Series 800 Only

NAME

isnan − test for NaN function

SYNOPSIS

#include <math.h>

int isnan (x)
double x;

DESCRIPTION

Isnan returns a nonzero integer if x is NaN (not-a-number).  Otherwise it returns zero. 

DEPENDENCIES

Series 300
This function is not supported.

SEE ALSO

isinf(3M). 

STANDARDS CONFORMANCE

isnan: XPG2, XPG3

Hewlett-Packard Company  —  HP-UX Release 7.0: Sept 1989

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