Content-type: text/html Man page of isnormal

isnormal

Section: Mathematical Library Functions (3M)
Updated: 12 Jul 2006
Index Return to Main Contents
 

NAME

isnormal - test for a normal value  

SYNOPSIS

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

int isnormal(real-floating x);  

DESCRIPTION

The isnormal() macro determines whether its argument value is normal (neither zero, subnormal, infinite, nor NaN). 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 isnormal() macro returns a non-zero value if and only if its argument has a normal 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), isinf(3M), isnan(3M), math.h(3HEAD), signbit(3M), attributes(5), standards(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
ERRORS
ATTRIBUTES
SEE ALSO

This document was created by man2html, using the manual pages.
Time: 02:39:34 GMT, October 02, 2010