minix/lib/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.
.\"
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.\" 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
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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 .