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## Copyright (C) 1996, 1998, 2004, 2005, 2007
## Auburn University. All rights reserved.
##
##
## This program 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 3 of the License, or (at
## your option) any later version.
##
## This program 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 this program; see the file COPYING. If not, see
## <http://www.gnu.org/licenses/>.
## Undocumented internal function.
function c = __sysconcat__ (a, b)
## c = __sysconcat__ (a, b)
## cell array replacement for append, used by control systems toolbox
if (ischar (a))
a = {a};
endif
if (ischar (b))
b = {b};
endif
if (! (is_signal_list (a) && is_signal_list (b)))
error("need cell arrays of strings");
endif
c = a;
la = length (a);
for ii = 1:length (b)
c{la+ii} = b{ii};
endfor
endfunction
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