home *** CD-ROM | disk | FTP | other *** search
- # Copyright (C) 1995 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, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- function l = lcm (a, ...)
-
- # 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]).
-
- # Written by KH (Kurt.Hornik@ci.tuwien.ac.at) on Sep 16, 1994.
-
- 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
-