Mercurial > octave
view scripts/elfun/lcm.m @ 1315:611d403c7f3d
[project @ 1995-06-25 19:56:32 by jwe]
author | jwe |
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date | Sun, 25 Jun 1995 19:56:32 +0000 |
parents | 9fc405c8c06c |
children | 52a3f38cbfeb |
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# 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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