Content-type: text/html Man page of round

round

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

round, roundf, roundl - round to nearest integer value in floating-point format  

SYNOPSIS

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

double round(double x);

float roundf(float x);

long double roundl(long double x);  

DESCRIPTION

These functions round their argument to the nearest integer value in floating-point format, rounding halfway cases away from 0, regardless of the current rounding direction.  

RETURN VALUES

Upon successful completion, these functions return the rounded integer value.

If x is NaN, a NaN is returned.

If x is ±0 or ± Inf, x is returned.  

ATTRIBUTES

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

ATTRIBUTE TYPEATTRIBUTE VALUE
Interface StabilityStandard
MT-LevelMT-Safe

 

SEE ALSO

feclearexcept(3M), fetestexcept(3M), math.h(3HEAD), attributes(5), standards(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:39:34 GMT, October 02, 2010