NAME

isinf − test for INFINITY function

SYNOPSIS

#include <math.h>

int isinf (x)
double x;

DESCRIPTION

Isinf returns a positive integer if x is +INFINITY , or a negative integer if x is −INFINITY .  Otherwise it returns zero. 

DEPENDENCIES

Series 300
This function is not supported.

SEE ALSO

isnan(3M). 

STANDARDS CONFORMANCE

isinf: XPG2, XPG3

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