LROUND

Section: Linux Programmer's Manual (3)
Updated: 2001-05-31
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NAME

lround, lroundf, lroundl, llround, llroundf, llroundl - round to nearest integer, away from zero  

SYNOPSIS

#include <math.h>

long int lround(double x);

long int lroundf(float x);
long int lroundl(long double x); long long int llround(double x);
long long int llroundf(float x);
long long int llroundl(long double x);

Compile with -std=c99; link with -lm.  

DESCRIPTION

These functions round their argument to the nearest integer value, rounding away from zero, regardless of the current rounding direction. If x is infinite or NaN, or if the rounded value is outside the range of the return type, the numeric result is unspecified. A domain error may occur if the magnitude of x is too large.  

RETURN VALUE

The rounded integer value. Note that unlike round(3), ceil(3), etc., the return type of these functions differs from that of their arguments.  

ERRORS

EDOM
The magnitude of x is too large and (math_errhandling & MATH_ERRNO) is non-zero.
 

CONFORMING TO

C99.  

SEE ALSO

ceil(3), floor(3), lrint(3), nearbyint(3), rint(3), round(3)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
CONFORMING TO
SEE ALSO

linux.jgfs.net manual pages