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## Copyright (C) 1996, 1998, 2000, 2002, 2004, 2005, 2006, 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/>.
## -*- texinfo -*-
## @deftypefn {Function File} {} sysidx (@var{sys}, @var{sigtype}, @var{signamelist})
## Return indices of signals with specified signal names
## inputs given a system data structure @var{sys}, a signal type to be
## selected @var{sigtype} (@code{"in"}, @code{"out"}, @code{"st"}), and
## a list of desired signal names @var{signamelist}.
## @end deftypefn
function idxvec = sysidx (sys, sigtype, signamelist)
if (nargin != 3)
print_usage ();
elseif (! isstruct (sys))
error ("sys must be a system data structure");
elseif (! ischar (sigtype))
error ("sigtype must be a string");
elseif (rows (sigtype) != 1)
[nr, nc] = size (sigtype);
error ("sigtype (%d x %d) must be a single string", nr, nc);
endif
## extract correct set of signal names values
[idxvec, msg] = cellidx ({"in", "out", "st", "yd"}, sigtype);
if (msg)
error ("invalid sigtype = %s", sigtype);
endif
syssiglist = sysgetsignals (sys, sigtype);
[idxvec, msg] = cellidx (syssiglist, signamelist);
if (length (msg))
error ("sysidx (sigtype = %s): %s", sigtype,
strrep (msg, "strlist", "signamelist"));
endif
endfunction
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