NAME
nearbyint,
nearbyintf, nearbyintl,
rint, rintf,
rintl —
round to integral value in
floating-point format
LIBRARY
library “libm”
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
Therint(),
rintf(),
and
rintl()
functions return the integral value nearest to x
according to the prevailing rounding mode. These functions raise an inexact
exception when the original argument is not an exact integer.
The
nearbyint(),
nearbyintf(),
and
nearbyintl()
functions perform the same operation, except that they do not raise an
inexact exception.
SEE ALSO
abs(3), ceil(3), fabs(3), fenv(3), floor(3), lrint(3), math(3), round(3)
HISTORY
A rint() function appeared in
Version 6 AT&T UNIX.