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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) ????-2008 - INRIA
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution. The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
function [p, fact] = lcm(p)
//p=lcm(p) computes the lcm of polynomial vector p
//[pp,fact]=lcm(p) computes besides the vector fact of factors
//such that p.*fact=pp*ones(p)
//!
if type(p)<>1 & type(p)<>2 & type(p)<>8 then
error(msprintf(_("%s: Wrong type for argument #%d: Integer array or Polynomial expected.\n"), "lcm", 1));
end
if type(p)==1 then
if floor(p)<>p then
error(msprintf(_("%s: Wrong type for argument #%d: Integer array or Polynomial expected.\n"), "lcm", 1));
else
p = iconvert(p,4);
end
end
if type(p)==8 then
if argn(1)==2 then [p, fact] = %i_lcm(p), else p = %i_lcm(p), end
return
end
[m, n] = size(p),
p = matrix(p, m*n, 1),
p0 = p(1); fact = 1;
for l = 2:m*n,
[u, v] = simp(p0, p(l)),
p0 = p0*v,
fact = [v*fact, u],
end,
fact = matrix(fact, m, n),
p = p0;
endfunction
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