Content-type: text/html Man page of isinf

isinf

Section: Mathematical Library Functions (3M)
Updated: 12 Jul 2006
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NAME

isinf - test for infinity  

SYNOPSIS

c99 [ flag... ] file... -lm [ library... ]
#include <math.h>

int isinf(real-floating x);  

DESCRIPTION

The isinf() macro determines whether its argument value is an infinity (positive or negative). First, an argument represented in a format wider than its semantic type is converted to its semantic type. Then determination is based on the type of the argument.  

RETURN VALUES

The isinf() macro returns a non-zero value if and only if its argument has an infinite value.  

ERRORS

No errors are defined.  

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
Interface StabilityStandard
MT-LevelMT-Safe

 

SEE ALSO

fpclassify(3M), isfinite(3M), isnan(3M), isnormal(3M), math.h(3HEAD), signbit(3M), attributes(5), standards(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
ERRORS
ATTRIBUTES
SEE ALSO

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Time: 02:39:33 GMT, October 02, 2010