NAME
    trunc - truncate a value to a number of decimal places

SYNOPSIS
    trunc(x [,j])

TYPES
    x		real
    j		int

    return	real

DESCRIPTION
    Truncate x to j decimal places.  If j is omitted, 0 places is assumed.
    Specifying zero places makes the result identical to int().

    Truncation of a non-integer prodcues values nearer to zero.

EXAMPLE
    ; print trunc(pi()), trunc(pi(), 5)
    3 3.14159

    ; print trunc(3.333), trunc(3.789), trunc(3.333, 2), trunc(3.789, 2)
    3 3 3.33 3.78

    ; print trunc(-3.333), trunc(-3.789), trunc(-3.333, 2), trunc(-3.789, 2)
    -3 -3 -3.33 -3.78

LIMITS
    0 <= j < 2^31

LINK LIBRARY
    NUMBER *qtrunc(NUMBER *x, *j)

SEE ALSO
    bround, btrunc, int, round

## Copyright (C) 1999  Landon Curt Noll
##
## Calc is open software; you can redistribute it and/or modify it under
## the terms of the version 2.1 of the GNU Lesser General Public License
## as published by the Free Software Foundation.
##
## Calc is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
## or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
## Public License for more details.
##
## A copy of version 2.1 of the GNU Lesser General Public License is
## distributed with calc under the filename COPYING-LGPL.  You should have
## received a copy with calc; if not, write to Free Software Foundation, Inc.
## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
##
## @(#) $Revision: 30.1 $
## @(#) $Id: trunc,v 30.1 2007/03/16 11:10:42 chongo Exp $
## @(#) $Source: /usr/local/src/bin/calc/help/RCS/trunc,v $
##
## Under source code control:	1994/09/30 00:52:38
## File existed as early as:	1994
##
## chongo <was here> /\oo/\	http://www.isthe.com/chongo/
## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/