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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_V2.1-en.txt
function r=%r_e(varargin)
// %r_e(i,j,f) extraction f(i,j) in a rational matrix
//author Serge Steer, INRIA
//!
f=varargin($)
num=f.num
den=f.den
r=rlist(num(varargin(1:$-1)),den(varargin(1:$-1)),f.dt)
if r.num==[] then r=[],end
endfunction
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