NAME

nearbyint, nearbyintf, nearbyintl, rint, rintf, rintl — round to integral value in floating-point format

SYNOPSIS

Math Library (libm, -lm)
#include <math.h>

double
nearbyint(double x);

float
nearbyintf(float x);

long double
nearbyintl(long double x);

double
rint(double x);

float
rintf(float x);

long double
rintl(long double x);

DESCRIPTION

The rint(), rintf(), and rintl() functions return the integral value nearest to x according to the prevailing rounding mode.

The nearbyint(), nearbyintf(), and nearbyintl() functions do the same, but without raising the “inexact” floating-point exception.

SEE ALSO

abs(3), ceil(3), fabs(3), floor(3)

HISTORY

A rint() function appeared in Version 6 AT&T UNIX.