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- # Copyright (C) 1993, 1994, 1995 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, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- function retval = is_observable (a,c,tol)
-
- # 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.
-
- # Written by A. S. Hodel (scotte@eng.auburn.edu) August 1993.
-
- 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
-