1.\" $NetBSD: round.3,v 1.7 2013/11/12 00:10:29 joerg Exp $ 2.\" 3.\" Copyright (c) 2003, Steven G. Kargl 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 16.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 19.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25.\" SUCH DAMAGE. 26.\" 27.\" $FreeBSD: src/lib/msun/man/round.3,v 1.2 2004/06/20 09:27:17 das Exp $ 28.\" 29.Dd November 12, 2013 30.Dt ROUND 3 31.Os 32.Sh NAME 33.Nm round , 34.Nm roundf , 35.Nm roundl 36.Nd round to nearest integral value 37.Sh LIBRARY 38.Lb libm 39.Sh SYNOPSIS 40.In math.h 41.Ft double 42.Fn round "double x" 43.Ft float 44.Fn roundf "float x" 45.Ft long double 46.Fn roundl "long double x" 47.Sh DESCRIPTION 48The 49.Fn round , 50.Fn roundf , 51and 52.Fn roundl 53functions return the nearest integral value to 54.Fa x ; 55if 56.Fa x 57lies halfway between two integral values, then these 58functions return the integral value with the larger 59absolute value (i.e., they round away from zero). 60.Sh SEE ALSO 61.Xr ceil 3 , 62.Xr floor 3 , 63.Xr math 3 , 64.Xr rint 3 , 65.Xr trunc 3 66.Sh STANDARDS 67The 68.Fn round 69and 70.Fn roundf 71functions conform to 72.St -isoC-99 . 73.Sh HISTORY 74The 75.Fn round 76and 77.Fn roundf 78functions appeared in 79.Nx 2.0 . 80