lowbit

Calc Software Package for Number Calc

NAME
    lowbit - index of lowest nonzero bit in binary representation of integer

SYNOPSIS
    lowbit(x)

TYPES
    x		nonzero integer

    return	integer

DESCRIPTION
    If x is a nonzero integer, lowbit(x) returns the index of the
    lowest nonzero bit in the binary representation of abs(x).	Equivalently,
    lowbit(x) is the greatest integer for which x/2^n is an integer;
    the binary representation of x then ends with n zero bits.

EXAMPLE
    ; print lowbit(2), lowbit(3), lowbit(4), lowbit(-15), lowbit(2^27)
    1 0 2 0 27

LIMITS
    none

LINK LIBRARY
    long zlowbit(ZVALUE x);

SEE ALSO
    highbit, digits

## 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.
## 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
##
## @(#) $Revision: 29.3 $
## @(#) $Id: lowbit,v 29.3 2006/05/07 07:25:46 chongo Exp $
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/lowbit,v $
##
## Under source code control:	1995/10/03 10:40:02
## File existed as early as:	1995
##
## chongo <was here> /\oo/\	http://www.isthe.com/chongo/
## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/