mirror of
https://gitlab.com/sortix/sortix.git
synced 2023-02-13 20:55:38 -05:00
5980be9b3c
This work is based in part on code from NetBSD libm, libc and kernel. The library is partly public domain and partly BSD-style licensed.
79 lines
2.3 KiB
Groff
79 lines
2.3 KiB
Groff
.\" $NetBSD: trunc.3,v 1.5 2006/04/04 20:26:33 wiz Exp $
|
|
.\"
|
|
.\" Copyright (c) 2004, 2005 David Schultz <das@FreeBSD.org>
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD: src/lib/msun/man/trunc.3,v 1.3 2005/06/15 19:04:04 ru Exp $
|
|
.\"
|
|
.Dd March 31, 2006
|
|
.Dt TRUNC 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm trunc ,
|
|
.Nm truncf
|
|
.\" .Nm truncl
|
|
.Nd "nearest integral value with magnitude less than or equal to |x|"
|
|
.Sh LIBRARY
|
|
.Lb libm
|
|
.Sh SYNOPSIS
|
|
.In math.h
|
|
.Ft double
|
|
.Fn trunc "double x"
|
|
.Ft float
|
|
.Fn truncf "float x"
|
|
.\" .Ft "long double"
|
|
.\" .Fn truncl "long double x"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn trunc
|
|
and
|
|
.Fn truncf
|
|
.\" .Fn truncl
|
|
functions return the nearest integral value with magnitude less than
|
|
or equal to
|
|
.Pf | Fa x Ns | .
|
|
They are equivalent to
|
|
.Fn rint
|
|
and
|
|
.Fn rintf
|
|
.\" .Fn rintl
|
|
respectively, in the
|
|
.Dv FP_RZ
|
|
rounding mode.
|
|
.Sh SEE ALSO
|
|
.Xr ceil 3 ,
|
|
.Xr floor 3 ,
|
|
.Xr fpsetround 3 ,
|
|
.Xr math 3 ,
|
|
.Xr nextafter 3 ,
|
|
.Xr rint 3 ,
|
|
.Xr round 3
|
|
.Sh STANDARDS
|
|
The
|
|
.Fn trunc
|
|
and
|
|
.Fn truncf
|
|
.\" .Fn truncl
|
|
functions conform to
|
|
.St -isoC-99 .
|