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- ## Copyright (C) 1996 Auburn University. All Rights Reserved
- ##
- ## 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 USA.
-
- ## -*- texinfo -*-
- ## @deftypefn {Function File } { @var{vec} = } tf2sysl (@var{vec})
- ## used internally in @ref{tf2sys}.
- ## strip leading zero coefficients to get the true polynomial length
- ## @end deftypefn
-
- function vec = tf2sysl (vec)
- ## vec = tf2sysl(vec)
- ##
- ## used internally in tf2sys
- ## strip leading zero coefficients to get the true polynomial length
-
-
- while( (length(vec) > 1) & (vec(1) == 0) )
- vec = vec(2:length(vec));
- endwhile
- if(vec(1) == 0)
- warning("tf2sys: polynomial has no nonzero coefficients!")
- endif
-
- endfunction
-