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- # Copyright (C) 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 p = polyinteg (p)
-
- # usage: polyinteg (p)
- #
- # Returns the coefficients of the integral the polynomial whose coefficients
- # are represented by the vector p.
- #
- # The constant of integration is zero.
- #
- # SEE ALSO: poly, polyderiv, polyreduce, roots, conv, deconv, residue,
- # filter, polyval, polyvalm
-
- # Written by Tony Richardson (amr@mpl.ucsd.edu) June 1994.
-
- if(nargin != 1)
- usage ("polyinteg (vector)");
- endif
-
- if (is_matrix (p))
- error ("argument must be a vector");
- endif
-
- lp = length (p);
-
- if (lp == 0)
- p = [];
- return;
- end
-
- if (rows (p) > 1)
- # Convert to column vector
- p = p.';
- endif
-
- p = [ p, 0 ] ./ [ lp:-1:1, 1 ];
-
- endfunction
-