octave: src/DLD-FUNCTIONS/hess.cc annotate

annotate src/DLD-FUNCTIONS/hess.cc @ 14501:60e5cf354d80

Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. * __contourc__.cc, __delaunayn__.cc, __dispatch__.cc, __dsearchn__.cc, __fltk_uigetfile__.cc, __glpk__.cc, __lin_interpn__.cc, __magick_read__.cc, __pchip_deriv__.cc, __qp__.cc, __voronoi__.cc, besselj.cc, betainc.cc, bsxfun.cc, cellfun.cc, chol.cc, conv2.cc, convhulln.cc, dassl.cc, det.cc, dlmread.cc, dmperm.cc, dot.cc, eig.cc, eigs.cc, fft.cc, fft2.cc, filter.cc, find.cc, gammainc.cc, gcd.cc, givens.cc, hess.cc, hex2num.cc, inv.cc, kron.cc, lookup.cc, lsode.cc, lu.cc, luinc.cc, matrix_type.cc, max.cc, mgorth.cc, nproc.cc, qr.cc, quad.cc, quadcc.cc, qz.cc, rand.cc, rcond.cc, regexp.cc, schur.cc, spparms.cc, sqrtm.cc, str2double.cc, strfind.cc, sub2ind.cc, svd.cc, syl.cc, time.cc, tril.cc, tsearch.cc: Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.

author	Rik <octave@nomad.inbox5.com>
date	Tue, 27 Mar 2012 22:46:45 -0700
parents	72c96de7a403
children

rev	line source
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	1 /*
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	2
14138 72c96de7a403 maint: update copyright notices for 2012 John W. Eaton <jwe@octave.org> parents: 13915 diff changeset	3 Copyright (C) 1996-2012 John W. Eaton
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	4
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	5 This file is part of Octave.
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	6
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	7 Octave is free software; you can redistribute it and/or modify it
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	8 under the terms of the GNU General Public License as published by the
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 5823 diff changeset	9 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 5823 diff changeset	10 option) any later version.
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	11
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	12 Octave is distributed in the hope that it will be useful, but WITHOUT
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	15 for more details.
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	16
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	17 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: 5823 diff changeset	18 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 5823 diff changeset	19 <http://www.gnu.org/licenses/>.
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	20
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	21 */
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	22
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	23 #ifdef HAVE_CONFIG_H
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	24 #include <config.h>
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	25 #endif
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	26
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	27 #include "CmplxHESS.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	28 #include "dbleHESS.h"
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	29 #include "fCmplxHESS.h"
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	30 #include "floatHESS.h"
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	31
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	32 #include "defun-dld.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	33 #include "error.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	34 #include "gripes.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	35 #include "oct-obj.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	36 #include "utils.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	37
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	38 DEFUN_DLD (hess, args, nargout,
3548 ab7fa5a8f23f [project @ 2000-02-03 01:17:15 by jwe] jwe parents: 3372 diff changeset	39 "-- texinfo --\n\
12584 7ef7e20057fa Improve documentation strings in Linear Algebra chapter. Rik <octave@nomad.inbox5.com> parents: 11553 diff changeset	40 @deftypefn {Loadable Function} {@var{H} =} hess (@var{A})\n\
7ef7e20057fa Improve documentation strings in Linear Algebra chapter. Rik <octave@nomad.inbox5.com> parents: 11553 diff changeset	41 @deftypefnx {Loadable Function} {[@var{P}, @var{H}] =} hess (@var{A})\n\
3372 f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3014 diff changeset	42 @cindex Hessenberg decomposition\n\
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	43 Compute the Hessenberg decomposition of the matrix @var{A}.\n\
3372 f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3014 diff changeset	44 \n\
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	45 The Hessenberg decomposition is\n\
3372 f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3014 diff changeset	46 @tex\n\
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3014 diff changeset	47 $$\n\
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3014 diff changeset	48 A = PHP^T\n\
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3014 diff changeset	49 $$\n\
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	50 where $P$ is a square unitary matrix ($P^TP = I$), and $H$\n\
3372 f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3014 diff changeset	51 is upper Hessenberg ($H_{i,j} = 0, \\forall i \\ge j+1$).\n\
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3014 diff changeset	52 @end tex\n\
8517 81d6ab3ac93c Allow documentation tobe built for other formats than tex and info sh@sh-laptop parents: 7814 diff changeset	53 @ifnottex\n\
12584 7ef7e20057fa Improve documentation strings in Linear Algebra chapter. Rik <octave@nomad.inbox5.com> parents: 11553 diff changeset	54 @code{@var{P} * @var{H} * @var{P}' = @var{A}} where @var{P} is a square\n\
7ef7e20057fa Improve documentation strings in Linear Algebra chapter. Rik <octave@nomad.inbox5.com> parents: 11553 diff changeset	55 unitary matrix (@code{@var{P}' * @var{P} = I}, using complex-conjugate\n\
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	56 transposition) and @var{H} is upper Hessenberg\n\
01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	57 (@code{@var{H}(i, j) = 0 forall i >= j+1)}.\n\
8517 81d6ab3ac93c Allow documentation tobe built for other formats than tex and info sh@sh-laptop parents: 7814 diff changeset	58 @end ifnottex\n\
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	59 \n\
01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	60 The Hessenberg decomposition is usually used as the first step in an\n\
01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	61 eigenvalue computation, but has other applications as well (see Golub,\n\
01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	62 Nash, and Van Loan, IEEE Transactions on Automatic Control, 1979).\n\
3372 f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3014 diff changeset	63 @end deftypefn")
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	64 {
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	65 octave_value_list retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	66
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	67 int nargin = args.length ();
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	68
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	69 if (nargin != 1 \|\| nargout > 2)
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	70 {
5823 080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe] jwe parents: 5307 diff changeset	71 print_usage ();
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	72 return retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	73 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	74
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	75 octave_value arg = args(0);
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	76
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 4684 diff changeset	77 octave_idx_type nr = arg.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 4684 diff changeset	78 octave_idx_type nc = arg.columns ();
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	79
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	80 int arg_is_empty = empty_arg ("hess", nr, nc);
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	81
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	82 if (arg_is_empty < 0)
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	83 return retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	84 else if (arg_is_empty > 0)
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	85 return octave_value_list (2, Matrix ());
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	86
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	87 if (nr != nc)
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	88 {
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	89 gripe_square_matrix_required ("hess");
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	90 return retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	91 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	92
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	93 if (arg.is_single_type ())
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	94 {
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	95 if (arg.is_real_type ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	96 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	97 FloatMatrix tmp = arg.float_matrix_value ();
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	98
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	99 if (! error_state)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	100 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	101 FloatHESS result (tmp);
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	102
10539 8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	103 if (nargout <= 1)
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	104 retval(0) = result.hess_matrix ();
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	105 else
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	106 {
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	107 retval(1) = result.hess_matrix ();
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	108 retval(0) = result.unitary_hess_matrix ();
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	109 }
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	110 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	111 }
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	112 else if (arg.is_complex_type ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	113 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	114 FloatComplexMatrix ctmp = arg.float_complex_matrix_value ();
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	115
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	116 if (! error_state)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	117 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	118 FloatComplexHESS result (ctmp);
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	119
10539 8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	120 if (nargout <= 1)
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	121 retval(0) = result.hess_matrix ();
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	122 else
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	123 {
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	124 retval(1) = result.hess_matrix ();
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	125 retval(0) = result.unitary_hess_matrix ();
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	126 }
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	127 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	128 }
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	129 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	130 else
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	131 {
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	132 if (arg.is_real_type ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	133 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	134 Matrix tmp = arg.matrix_value ();
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	135
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	136 if (! error_state)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	137 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	138 HESS result (tmp);
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	139
10539 8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	140 if (nargout <= 1)
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	141 retval(0) = result.hess_matrix ();
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	142 else
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	143 {
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	144 retval(1) = result.hess_matrix ();
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	145 retval(0) = result.unitary_hess_matrix ();
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	146 }
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	147 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	148 }
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	149 else if (arg.is_complex_type ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	150 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	151 ComplexMatrix ctmp = arg.complex_matrix_value ();
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	152
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	153 if (! error_state)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	154 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	155 ComplexHESS result (ctmp);
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	156
10539 8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	157 if (nargout <= 1)
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	158 retval(0) = result.hess_matrix ();
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	159 else
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	160 {
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	161 retval(1) = result.hess_matrix ();
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	162 retval(0) = result.unitary_hess_matrix ();
8db807a0eb78 Return correct Hessenberg matrix when called with 0 or 1 output arguments Rik <code@nomad.inbox5.com> parents: 10155 diff changeset	163 }
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	164 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	165 }
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	166 else
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	167 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	168 gripe_wrong_type_arg ("hess", arg);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	169 }
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	170 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	171
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	172 return retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	173 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	174
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	175 /*
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	176 %!test
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	177 %! a = [1, 2, 3; 5, 4, 6; 8, 7, 9];
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	178 %! [p, h] = hess (a);
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	179 %! assert (p * h * p', a, sqrt (eps));
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	180
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	181 %!test
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	182 %! a = single ([1, 2, 3; 5, 4, 6; 8, 7, 9]);
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	183 %! [p, h] = hess (a);
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	184 %! assert (p * h * p', a, sqrt (eps ("single")));
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	185
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	186 %!error hess ()
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	187 %!error hess ([1, 2; 3, 4], 2)
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	188 %!error <argument must be a square matrix> hess ([1, 2; 3, 4; 5, 6])
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	189 */

Mercurial > octave

annotate src/DLD-FUNCTIONS/hess.cc @ 14501:60e5cf354d80