minix/lib/libm/man/trunc.3

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.\" $NetBSD: trunc.3,v 1.7 2013/11/13 22:11:52 wiz Exp $
.\"
.\" Copyright (c) 2004, 2005 David Schultz <das@FreeBSD.org>
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.\" $FreeBSD: src/lib/msun/man/trunc.3,v 1.3 2005/06/15 19:04:04 ru Exp $
.\"
.Dd November 13, 2013
.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 ,
.Fn truncf ,
and
.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 ,
.Fn rintf ,
and
.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 ,
.Fn truncf ,
and
.Fn truncl
functions conform to
.St -isoC-99 .