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RINT(3) Library Functions Manual RINT(3)

NAME

nearbyint, nearbyintf, nearbyintl, rint, rintf, rintlround to integral value in floating-point format

SYNOPSIS

#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.
June 5, 2013 OpenBSD-current