minix/lib/nbsd_libm/man/trunc.3

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.\" $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
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.\" 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
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" $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 .