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.\"     from: @(#)rint.3	5.1 (Berkeley) 5/2/91
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.Dd $Mdocdate: August 3 2009 $
.Dt RINT 3
.Os
.Sh NAME
.Nm rint ,
.Nm rintf ,
.Nm rintl
.Nd round to integral value in floating-point format
.Sh SYNOPSIS
.Fd #include <math.h>
.Ft double
.Fn rint "double x"
.Ft float
.Fn rintf "float x"
.Ft long double
.Fn rintl "long double x"
.Sh DESCRIPTION
The
.Fn rint
function returns the integral value (represented as a double precision number)
nearest to
.Fa x
according to the prevailing rounding mode.
The
.Fn rintf
function is a single precision version of
.Fn rint .
The
.Fn rintl
function is an extended precision version of
.Fn rint .
.Sh SEE ALSO
.Xr abs 3 ,
.Xr ceil 3 ,
.Xr fabs 3 ,
.Xr floor 3 ,
.Xr math 3
.Sh HISTORY
A
.Fn rint
function appeared in
.At v6 .