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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 [Sm]=systmat(Sl);
// System matrix of the linear system Sl (syslin list)
// in state-space form.
// Sm = [-sE + A B;
// [ C D]
// To get the zeros use det or detr (for square systems)
//!
ty=Sl(1);
ty=ty(1);
if ty=="lss" then
if Sl(7)=="d" then
s=poly(0,"z");
else
s=poly(0,"s");
end
Sm=[-s*eye(Sl(2))+Sl(2),Sl(3);Sl(4),Sl(5)];
return
end
if part(ty,1)=="d" then
s=poly(0,"s");
Sm=[-s*Sl(6)+Sl(2),Sl(3);Sl(4),Sl(5)];
return
end
endfunction
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