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## Copyright (C) 1996 John W. Eaton
##
## This file is part of Octave.
##
## Octave is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2, or (at your option)
## any later version.
##
## Octave 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
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Octave; see the file COPYING. If not, write to the Free
## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
## 02111-1307, USA.
## usage: lcm (a, ...)
##
## lcm (a) returns the least common multiple of the entries of the
## integer vector a.
## lcm (a1, ..., ak) is the same as lcm([a1, ..., ak]).
## Author: KH <Kurt.Hornik@ci.tuwien.ac.at>
## Created: 16 September 1994
## Adapted-By: jwe
function l = lcm (a, ...)
if (nargin == 0)
usage ("lcm (a, ...)");
endif
if (nargin > 1)
va_start;
for k = 2:nargin;
a = [a, (va_arg ())];
endfor
endif
if (round (a) != a)
error ("lcm: all arguments must be integer");
endif
if (any (a) == 0)
l = 0;
else
a = abs (a);
l = a (1);
for k = 1:(length (a) - 1)
l = l * a(k+1) / gcd (l, a(k+1));
endfor
endif
endfunction
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