.\"	$OpenBSD: trunc.3,v 1.1 2006/03/18 20:13:24 brad Exp $
.\"
.\" Copyright (c) 2004, 2005 David Schultz <das@FreeBSD.org>
.\" All rights reserved.
.\"
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.\" $FreeBSD: src/lib/msun/man/trunc.3,v 1.3 2005/06/15 19:04:04 ru Exp $
.\"
.Dd April 16, 2005
.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 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 FE_TOWARDZERO
rounding mode.
.Sh SEE ALSO
.Xr ceil 3 ,
.\" .Xr fesetround 3
.Xr floor 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 .