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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) 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-en.txt
function d=%c_tril(a,k)
[lhs,rhs]=argn(0)
if rhs==1 then k=0,end
[m,n]=size(a)
i=find(tril(ones(a),k))
a=matrix(a,m*n,1)
d=emptystr(m*n,1)
d(i)=a(i)
d=matrix(d,m,n)
endfunction
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