octave-nkf: scripts/polynomial/polyvalm.m annotate

annotate scripts/polynomial/polyvalm.m @ 13258:be74491c20e8

Correct typo in input validation of polynomial functions (Bug #33252) * ppder.m, ppint.m, ppjumps.m, ppval.m: Correct typo placing negation (!) only on first isstruct argument rather than combined (isstruct && strcmp) condition.

author	Rik <octave@nomad.inbox5.com>
date	Fri, 30 Sep 2011 09:20:08 -0700
parents	fd0a3ac60b0e
children	663594b481e5

rev	line source
11523 fd0a3ac60b0e update copyright notices John W. Eaton <jwe@octave.org> parents: 10224 diff changeset	1 ## Copyright (C) 1994-2011 John W. Eaton
8903 c174a1fc3fde reimplement polyvalm using Horner Jaroslav Hajek <highegg@gmail.com> parents: 8286 diff changeset	2 ## Copyright (C) 2009 Jaroslav Hajek
2313 5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	3 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	4 ## This file is part of Octave.
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	5 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	6 ## Octave is free software; you can redistribute it and/or modify it
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	7 ## under the terms of the GNU General Public License as published by
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6046 diff changeset	8 ## the Free Software Foundation; either version 3 of the License, or (at
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6046 diff changeset	9 ## your option) any later version.
2313 5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	10 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	11 ## Octave is distributed in the hope that it will be useful, but
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	14 ## General Public License for more details.
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	15 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	16 ## You should have received a copy of the GNU General Public License
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6046 diff changeset	17 ## along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6046 diff changeset	18 ## <http://www.gnu.org/licenses/>.
904 3470f1e25a79 [project @ 1994-11-09 21:22:15 by jwe] jwe parents: 561 diff changeset	19
3368 a4cd1e9d9962 [project @ 1999-11-20 17:22:48 by jwe] jwe parents: 3202 diff changeset	20 ## -- texinfo --
a4cd1e9d9962 [project @ 1999-11-20 17:22:48 by jwe] jwe parents: 3202 diff changeset	21 ## @deftypefn {Function File} {} polyvalm (@var{c}, @var{x})
2311 2b5788792cad [project @ 1996-07-11 20:18:38 by jwe] jwe parents: 2303 diff changeset	22 ## Evaluate a polynomial in the matrix sense.
3426 f8dde1807dee [project @ 2000-01-13 08:40:00 by jwe] jwe parents: 3368 diff changeset	23 ##
3368 a4cd1e9d9962 [project @ 1999-11-20 17:22:48 by jwe] jwe parents: 3202 diff changeset	24 ## @code{polyvalm (@var{c}, @var{x})} will evaluate the polynomial in the
9051 1bf0ce0930be Grammar check TexInfo in all .m files Rik <rdrider0-list@yahoo.com> parents: 8920 diff changeset	25 ## matrix sense, i.e., matrix multiplication is used instead of element by
3368 a4cd1e9d9962 [project @ 1999-11-20 17:22:48 by jwe] jwe parents: 3202 diff changeset	26 ## element multiplication as is used in polyval.
3426 f8dde1807dee [project @ 2000-01-13 08:40:00 by jwe] jwe parents: 3368 diff changeset	27 ##
3368 a4cd1e9d9962 [project @ 1999-11-20 17:22:48 by jwe] jwe parents: 3202 diff changeset	28 ## The argument @var{x} must be a square matrix.
3457 e031284eea27 [project @ 2000-01-19 08:49:56 by jwe] jwe parents: 3426 diff changeset	29 ## @seealso{polyval, poly, roots, conv, deconv, residue, filter,
10224 f6e0404421f4 point to polyint in @seealso, not polyinteg John W. Eaton <jwe@octave.org> parents: 9051 diff changeset	30 ## polyderiv, polyint}
5642 2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe] jwe parents: 5307 diff changeset	31 ## @end deftypefn
1025 f558749713f1 [project @ 1995-01-11 20:52:10 by jwe] jwe parents: 904 diff changeset	32
3202 44d82b369c78 [project @ 1998-10-29 20:27:57 by jwe] jwe parents: 3085 diff changeset	33 ## Author: Tony Richardson <arichard@stark.cc.oh.us>
2312 204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe] jwe parents: 2311 diff changeset	34 ## Created: June 1994
204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe] jwe parents: 2311 diff changeset	35 ## Adapted-By: jwe
561 e79ff1f4df3c [project @ 1994-07-25 22:32:08 by jwe] jwe parents: diff changeset	36
2312 204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe] jwe parents: 2311 diff changeset	37 function y = polyvalm (c, x)
561 e79ff1f4df3c [project @ 1994-07-25 22:32:08 by jwe] jwe parents: diff changeset	38
3085 e6d14959bea9 [project @ 1997-09-19 22:06:12 by jwe] jwe parents: 2847 diff changeset	39 if (nargin != 2)
6046 34f96dd5441b [project @ 2006-10-10 16:10:25 by jwe] jwe parents: 5642 diff changeset	40 print_usage ();
561 e79ff1f4df3c [project @ 1994-07-25 22:32:08 by jwe] jwe parents: diff changeset	41 endif
e79ff1f4df3c [project @ 1994-07-25 22:32:08 by jwe] jwe parents: diff changeset	42
4030 22bd65326ec1 [project @ 2002-08-09 18:58:13 by jwe] jwe parents: 3649 diff changeset	43 if (! (isvector (c) \|\| isempty (c)))
3458 d25bc039237b [project @ 2000-01-19 09:36:14 by jwe] jwe parents: 3457 diff changeset	44 error ("polyvalm: first argument must be a vector");
561 e79ff1f4df3c [project @ 1994-07-25 22:32:08 by jwe] jwe parents: diff changeset	45 endif
e79ff1f4df3c [project @ 1994-07-25 22:32:08 by jwe] jwe parents: diff changeset	46
4030 22bd65326ec1 [project @ 2002-08-09 18:58:13 by jwe] jwe parents: 3649 diff changeset	47 if (! issquare (x))
3458 d25bc039237b [project @ 2000-01-19 09:36:14 by jwe] jwe parents: 3457 diff changeset	48 error ("polyvalm: second argument must be a square matrix");
561 e79ff1f4df3c [project @ 1994-07-25 22:32:08 by jwe] jwe parents: diff changeset	49 endif
e79ff1f4df3c [project @ 1994-07-25 22:32:08 by jwe] jwe parents: diff changeset	50
8903 c174a1fc3fde reimplement polyvalm using Horner Jaroslav Hajek <highegg@gmail.com> parents: 8286 diff changeset	51 n = length (c);
c174a1fc3fde reimplement polyvalm using Horner Jaroslav Hajek <highegg@gmail.com> parents: 8286 diff changeset	52 if (n == 0)
c174a1fc3fde reimplement polyvalm using Horner Jaroslav Hajek <highegg@gmail.com> parents: 8286 diff changeset	53 y = zeros (rows (x), class (x));
3085 e6d14959bea9 [project @ 1997-09-19 22:06:12 by jwe] jwe parents: 2847 diff changeset	54 else
8903 c174a1fc3fde reimplement polyvalm using Horner Jaroslav Hajek <highegg@gmail.com> parents: 8286 diff changeset	55 id = eye (rows (x), class (x));
c174a1fc3fde reimplement polyvalm using Horner Jaroslav Hajek <highegg@gmail.com> parents: 8286 diff changeset	56 y = c(1) * id;
c174a1fc3fde reimplement polyvalm using Horner Jaroslav Hajek <highegg@gmail.com> parents: 8286 diff changeset	57 for i = 2:n
c174a1fc3fde reimplement polyvalm using Horner Jaroslav Hajek <highegg@gmail.com> parents: 8286 diff changeset	58 y = y * x + c(i) * id;
c174a1fc3fde reimplement polyvalm using Horner Jaroslav Hajek <highegg@gmail.com> parents: 8286 diff changeset	59 endfor
3085 e6d14959bea9 [project @ 1997-09-19 22:06:12 by jwe] jwe parents: 2847 diff changeset	60 endif
561 e79ff1f4df3c [project @ 1994-07-25 22:32:08 by jwe] jwe parents: diff changeset	61
e79ff1f4df3c [project @ 1994-07-25 22:32:08 by jwe] jwe parents: diff changeset	62 endfunction
7411 83a8781b529d [project @ 2008-01-22 21:52:25 by jwe] jwe parents: 7017 diff changeset	63
8903 c174a1fc3fde reimplement polyvalm using Horner Jaroslav Hajek <highegg@gmail.com> parents: 8286 diff changeset	64
c174a1fc3fde reimplement polyvalm using Horner Jaroslav Hajek <highegg@gmail.com> parents: 8286 diff changeset	65 %!assert(! any (polyvalm ([], [1, 2; 3, 4]))(:));
c174a1fc3fde reimplement polyvalm using Horner Jaroslav Hajek <highegg@gmail.com> parents: 8286 diff changeset	66 %!assert(polyvalm ([1, 2, 3, 4], [3, -4, 1; -2, 0, 2; -1, 4, -3]), [117, -124, 11; -70, 36, 38; -43, 92, -45])
7411 83a8781b529d [project @ 2008-01-22 21:52:25 by jwe] jwe parents: 7017 diff changeset	67
83a8781b529d [project @ 2008-01-22 21:52:25 by jwe] jwe parents: 7017 diff changeset	68 %!error polyvalm ([1, 1, 1], [1, 2; 3, 4; 5, 6]);
83a8781b529d [project @ 2008-01-22 21:52:25 by jwe] jwe parents: 7017 diff changeset	69

Mercurial > hg > octave-nkf

annotate scripts/polynomial/polyvalm.m @ 13258:be74491c20e8