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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
-