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- ## Copyright (C) 1996 John W. Eaton
- ##
- ## This file is part of Octave.
- ##
- ## Octave 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 2, or (at your option)
- ## any later version.
- ##
- ## Octave 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 Octave; see the file COPYING. If not, write to the Free
- ## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
- ## 02111-1307, USA.
-
- ## usage: is_observable (a, c {,tol})
- ##
- ## Returns 1 if the pair (a, c) is observable, or 0 if not.
- ##
- ## See also: size, rows, columns, length, is_matrix, is_scalar, is_vector.
-
- ## Author: A. S. Hodel <scotte@eng.auburn.edu>
- ## Created: August 1993
- ## Adapted-By: jwe
-
- function retval = is_observable (a,c,tol)
-
- if (nargin == 2)
- retval = is_controllable (a', c');
- elseif (nargin == 3)
- retval = is_controllable (a', c', tol);
- else
- usage ("is_observable (a, c {,tol})");
- endif
-
- endfunction
-