--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main/control/inst/@lti/size_equal.m	Thu Oct 18 16:15:01 2012 +0000
@@ -0,0 +1,38 @@
+## Copyright (C) 2012   Lukas F. Reichlin
+##
+## This file is part of LTI Syncope.
+##
+## LTI Syncope 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.
+##
+## LTI Syncope 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 LTI Syncope.  If not, see <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {@var{bool} =} size_equal (@var{a}, @var{b}, @dots{})
+## Return true if LTI models (and matrices) @var{a}, @var{b}, @dots{}
+## are of equal size.
+## @end deftypefn
+
+## Author: Lukas Reichlin <lukas.reichlin@gmail.com>
+## Created: October 2012
+## Version: 0.1
+
+function bool = size_equal (varargin)
+
+  s = cellfun (@size, varargin, "uniformoutput", false);
+  
+  if (numel (s) == 1 || isequal (s{:}))  # isequal errors out with only 1 argument, numel(s)==0 handled by built-in size_equal
+    bool = true;
+  else
+    bool = false;
+  endif
+
+endfunction