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annotate src/DLD-FUNCTIONS/chol.cc @ 7924:4976f66d469b

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miscellaneous cleanup
author John W. Eaton <jwe@octave.org>
date Fri, 11 Jul 2008 17:59:28 -0400
parents 87865ed7405f
children 366821c0c01c
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1 /*
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2
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3 Copyright (C) 1996, 1997, 1999, 2000, 2002, 2005, 2006, 2007
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4 John W. Eaton
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5
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6 This file is part of Octave.
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7
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8 Octave is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 3 of the License, or (at your
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11 option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 // The cholupdate, cholinsert, choldelete and cholshift functions were
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25 // written by Jaroslav Hajek <highegg@gmail.com>, Copyright (C) 2008
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26 // VZLU Prague, a.s., Czech Republic.
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27
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28 #ifdef HAVE_CONFIG_H
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29 #include <config.h>
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30 #endif
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31
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32 #include "CmplxCHOL.h"
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33 #include "dbleCHOL.h"
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34 #include "fCmplxCHOL.h"
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35 #include "floatCHOL.h"
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36 #include "SparseCmplxCHOL.h"
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37 #include "SparsedbleCHOL.h"
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38 #include "oct-spparms.h"
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39 #include "sparse-util.h"
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40
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41 #include "ov-re-sparse.h"
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42 #include "ov-cx-sparse.h"
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43 #include "defun-dld.h"
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44 #include "error.h"
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45 #include "gripes.h"
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46 #include "oct-obj.h"
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47 #include "utils.h"
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48
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49 DEFUN_DLD (chol, args, nargout,
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50 "-*- texinfo -*-\n\
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51 @deftypefn {Loadable Function} {@var{r} =} chol (@var{a})\n\
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52 @deftypefnx {Loadable Function} {[@var{r}, @var{p}] =} chol (@var{a})\n\
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53 @deftypefnx {Loadable Function} {[@var{r}, @var{p}, @var{q}] =} chol (@var{s})\n\
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54 @deftypefnx {Loadable Function} {[@var{r}, @var{p}, @var{q}] =} chol (@var{s}, 'vector')\n\
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55 @deftypefnx {Loadable Function} {[@var{l}, @dots{}] =} chol (@dots{}, 'lower')\n\
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56 @cindex Cholesky factorization\n\
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57 Compute the Cholesky factor, @var{r}, of the symmetric positive definite\n\
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58 matrix @var{a}, where\n\
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59 @iftex\n\
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60 @tex\n\
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61 $ R^T R = A $.\n\
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62 @end tex\n\
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63 @end iftex\n\
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64 @ifinfo\n\
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65 \n\
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66 @example\n\
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67 @var{r}' * @var{r} = @var{a}.\n\
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68 @end example\n\
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69 @end ifinfo\n\
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70 \n\
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71 Called with one output argument @code{chol} fails if @var{a} or @var{s} is\n\
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72 not positive definite. With two or more output arguments @var{p} flags\n\
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73 whether the matrix was positive definite and @code{chol} does not fail. A\n\
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74 zero value indicated that the matrix was positive definite and the @var{r}\n\
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75 gives the factorization, annd @var{p} will have a positive value otherwise.\n\
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76 \n\
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77 If called with 3 outputs then a sparsity preserving row/column permutation\n\
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78 is applied to @var{a} prior to the factorization. That is @var{r}\n\
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79 is the factorization of @code{@var{a}(@var{q},@var{q})} such that\n\
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80 @iftex\n\
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81 @tex\n\
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82 $ R^T R = Q^T A Q$.\n\
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83 @end tex\n\
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84 @end iftex\n\
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85 @ifinfo\n\
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86 \n\
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87 @example\n\
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88 @var{r}' * @var{r} = @var{q}' * @var{a} * @var{q}.\n\
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89 @end example\n\
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90 @end ifinfo\n\
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91 \n\
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92 The sparsity preserving permutation is generally returned as a matrix.\n\
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93 However, given the flag 'vector', @var{q} will be returned as a vector\n\
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94 such that\n\
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95 @iftex\n\
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96 @tex\n\
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97 $ R^T R = A (Q, Q)$.\n\
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98 @end tex\n\
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99 @end iftex\n\
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100 @ifinfo\n\
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101 \n\
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102 @example\n\
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103 @var{r}' * @var{r} = a (@var{q}, @var{q}).\n\
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104 @end example\n\
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105 @end ifinfo\n\
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106 \n\
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107 Called with either a sparse or full matrix and uing the 'lower' flag,\n\
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108 @code{chol} returns the lower triangular factorization such that\n\
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109 @iftex\n\
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110 @tex\n\
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111 $ L L^T = A $.\n\
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112 @end tex\n\
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113 @end iftex\n\
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114 @ifinfo\n\
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115 \n\
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116 @example\n\
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117 @var{l} * @var{l}' = @var{a}.\n\
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118 @end example\n\
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119 @end ifinfo\n\
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120 \n\
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121 In general the lower trinagular factorization is significantly faster for\n\
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122 sparse matrices.\n\
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123 @seealso{cholinv, chol2inv}\n\
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124 @end deftypefn")
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125 {
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126 octave_value_list retval;
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127 int nargin = args.length ();
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128 bool LLt = false;
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129 bool vecout = false;
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130
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131 if (nargin < 1 || nargin > 3 || nargout > 3
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132 || (! args(0).is_sparse_type () && nargout > 2))
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133 {
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134 print_usage ();
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135 return retval;
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136 }
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137
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138 int n = 1;
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139 while (n < nargin && ! error_state)
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140 {
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141 std::string tmp = args(n++).string_value ();
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142
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143 if (! error_state )
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
144 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
145 if (tmp.compare ("vector") == 0)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
146 vecout = true;
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
147 else if (tmp.compare ("lower") == 0)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
148 LLt = true;
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
149 else if (tmp.compare ("upper") == 0)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
150 LLt = false;
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
151 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
152 error ("chol: unexpected second or third input");
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
153 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
154 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
155 error ("chol: expecting trailing string arguments");
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
156 }
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
157
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
158 if (! error_state)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
159 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
160 octave_value arg = args(0);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
161
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
162 octave_idx_type nr = arg.rows ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
163 octave_idx_type nc = arg.columns ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
164 bool natural = (nargout != 3);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
165
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
166 int arg_is_empty = empty_arg ("chol", nr, nc);
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
167
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
168 if (arg_is_empty < 0)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
169 return retval;
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
170 if (arg_is_empty > 0)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
171 return octave_value (Matrix ());
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
172
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
173 if (arg.is_sparse_type ())
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
174 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
175 if (arg.is_real_type ())
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
176 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
177 SparseMatrix m = arg.sparse_matrix_value ();
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
178
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
179 if (! error_state)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
180 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
181 octave_idx_type info;
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
182 SparseCHOL fact (m, info, natural);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
183 if (nargout == 3)
7924
4976f66d469b miscellaneous cleanup
John W. Eaton <jwe@octave.org>
parents: 7814
diff changeset
184 {
4976f66d469b miscellaneous cleanup
John W. Eaton <jwe@octave.org>
parents: 7814
diff changeset
185 if (vecout)
4976f66d469b miscellaneous cleanup
John W. Eaton <jwe@octave.org>
parents: 7814
diff changeset
186 retval(2) = fact.perm ();
4976f66d469b miscellaneous cleanup
John W. Eaton <jwe@octave.org>
parents: 7814
diff changeset
187 else
4976f66d469b miscellaneous cleanup
John W. Eaton <jwe@octave.org>
parents: 7814
diff changeset
188 retval(2) = fact.Q();
4976f66d469b miscellaneous cleanup
John W. Eaton <jwe@octave.org>
parents: 7814
diff changeset
189 }
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
190
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
191 if (nargout > 1 || info == 0)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
192 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
193 retval(1) = fact.P();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
194 if (LLt)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
195 retval(0) = fact.L();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
196 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
197 retval(0) = fact.R();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
198 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
199 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
200 error ("chol: matrix not positive definite");
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
201 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
202 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
203 else if (arg.is_complex_type ())
3243
dd00769643ae [project @ 1999-05-28 04:19:00 by jwe]
jwe
parents: 3014
diff changeset
204 {
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
205 SparseComplexMatrix m = arg.sparse_complex_matrix_value ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
206
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
207 if (! error_state)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
208 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
209 octave_idx_type info;
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
210 SparseComplexCHOL fact (m, info, natural);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
211
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
212 if (nargout == 3)
7924
4976f66d469b miscellaneous cleanup
John W. Eaton <jwe@octave.org>
parents: 7814
diff changeset
213 {
4976f66d469b miscellaneous cleanup
John W. Eaton <jwe@octave.org>
parents: 7814
diff changeset
214 if (vecout)
4976f66d469b miscellaneous cleanup
John W. Eaton <jwe@octave.org>
parents: 7814
diff changeset
215 retval(2) = fact.perm ();
4976f66d469b miscellaneous cleanup
John W. Eaton <jwe@octave.org>
parents: 7814
diff changeset
216 else
4976f66d469b miscellaneous cleanup
John W. Eaton <jwe@octave.org>
parents: 7814
diff changeset
217 retval(2) = fact.Q();
4976f66d469b miscellaneous cleanup
John W. Eaton <jwe@octave.org>
parents: 7814
diff changeset
218 }
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
219
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
220 if (nargout > 1 || info == 0)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
221 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
222 retval(1) = fact.P();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
223 if (LLt)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
224 retval(0) = fact.L();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
225 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
226 retval(0) = fact.R();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
227 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
228 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
229 error ("chol: matrix not positive definite");
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
230 }
3243
dd00769643ae [project @ 1999-05-28 04:19:00 by jwe]
jwe
parents: 3014
diff changeset
231 }
3244
7f8827f4040a [project @ 1999-05-29 14:01:55 by jwe]
jwe
parents: 3243
diff changeset
232 else
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
233 gripe_wrong_type_arg ("chol", arg);
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
234 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
235 else if (arg.is_single_type ())
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
236 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
237 if (arg.is_real_type ())
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
238 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
239 FloatMatrix m = arg.float_matrix_value ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
240
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
241 if (! error_state)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
242 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
243 octave_idx_type info;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
244 FloatCHOL fact (m, info);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
245 if (nargout == 2 || info == 0)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
246 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
247 retval(1) = static_cast<float> (info);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
248 if (LLt)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
249 retval(0) = fact.chol_matrix ().transpose ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
250 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
251 retval(0) = fact.chol_matrix ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
252 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
253 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
254 error ("chol: matrix not positive definite");
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
255 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
256 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
257 else if (arg.is_complex_type ())
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
258 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
259 FloatComplexMatrix m = arg.float_complex_matrix_value ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
260
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
261 if (! error_state)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
262 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
263 octave_idx_type info;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
264 FloatComplexCHOL fact (m, info);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
265 if (nargout == 2 || info == 0)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
266 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
267 retval(1) = static_cast<float> (info);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
268 if (LLt)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
269 retval(0) = fact.chol_matrix ().hermitian ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
270 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
271 retval(0) = fact.chol_matrix ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
272 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
273 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
274 error ("chol: matrix not positive definite");
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
275 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
276 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
277 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
278 gripe_wrong_type_arg ("chol", arg);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7700
diff changeset
279 }
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
280 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
281 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
282 if (arg.is_real_type ())
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
283 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
284 Matrix m = arg.matrix_value ();
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
285
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
286 if (! error_state)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
287 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
288 octave_idx_type info;
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
289 CHOL fact (m, info);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
290 if (nargout == 2 || info == 0)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
291 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
292 retval(1) = static_cast<double> (info);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
293 if (LLt)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
294 retval(0) = fact.chol_matrix ().transpose ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
295 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
296 retval(0) = fact.chol_matrix ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
297 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
298 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
299 error ("chol: matrix not positive definite");
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
300 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
301 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
302 else if (arg.is_complex_type ())
3243
dd00769643ae [project @ 1999-05-28 04:19:00 by jwe]
jwe
parents: 3014
diff changeset
303 {
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
304 ComplexMatrix m = arg.complex_matrix_value ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
305
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
306 if (! error_state)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
307 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
308 octave_idx_type info;
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
309 ComplexCHOL fact (m, info);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
310 if (nargout == 2 || info == 0)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
311 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
312 retval(1) = static_cast<double> (info);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
313 if (LLt)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
314 retval(0) = fact.chol_matrix ().hermitian ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
315 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
316 retval(0) = fact.chol_matrix ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
317 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
318 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
319 error ("chol: matrix not positive definite");
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
320 }
3243
dd00769643ae [project @ 1999-05-28 04:19:00 by jwe]
jwe
parents: 3014
diff changeset
321 }
3244
7f8827f4040a [project @ 1999-05-29 14:01:55 by jwe]
jwe
parents: 3243
diff changeset
322 else
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
323 gripe_wrong_type_arg ("chol", arg);
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
324 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
325 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
326
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
327 return retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
328 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
329
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
330 /*
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
331
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
332 %!assert(chol ([2, 1; 1, 1]), [sqrt(2), 1/sqrt(2); 0, 1/sqrt(2)], sqrt (eps));
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
333 %!assert(chol (single([2, 1; 1, 1])), single([sqrt(2), 1/sqrt(2); 0, 1/sqrt(2)]), sqrt (eps('single')));
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
334
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
335 %!error chol ([1, 2; 3, 4]);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
336 %!error chol ([1, 2; 3, 4; 5, 6]);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
337 %!error <Invalid call to chol.*> chol ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
338 %!error <unexpected second or third input.*> chol (1, 2);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
339
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
340 */
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
341
5760
8d7162924bd3 [project @ 2006-04-14 04:01:37 by jwe]
jwe
parents: 5448
diff changeset
342 DEFUN_DLD (cholinv, args, ,
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
343 "-*- texinfo -*-\n\
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
344 @deftypefn {Loadable Function} {} cholinv (@var{a})\n\
5448
ebe5d7d15522 [project @ 2005-09-14 18:55:04 by jwe]
jwe
parents: 5343
diff changeset
345 Use the Cholesky factorization to compute the inverse of the\n\
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
346 symmetric positive definite matrix @var{a}.\n\
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
347 @seealso{chol, chol2inv}\n\
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
348 @end deftypefn")
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
349 {
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
350 octave_value retval;
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
351
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
352 int nargin = args.length ();
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
353
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
354 if (nargin == 1)
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
355 {
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
356 octave_value arg = args(0);
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
357
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
358 octave_idx_type nr = arg.rows ();
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
359 octave_idx_type nc = arg.columns ();
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
360
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
361 if (nr == 0 || nc == 0)
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
362 retval = Matrix ();
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
363 else
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
364 {
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
365 if (arg.is_sparse_type ())
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
366 {
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
367 if (arg.is_real_type ())
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
368 {
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
369 SparseMatrix m = arg.sparse_matrix_value ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
370
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
371 if (! error_state)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
372 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
373 octave_idx_type info;
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
374 SparseCHOL chol (m, info);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
375 if (info == 0)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
376 retval = chol.inverse ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
377 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
378 error ("cholinv: matrix not positive definite");
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
379 }
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
380 }
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
381 else if (arg.is_complex_type ())
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
382 {
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
383 SparseComplexMatrix m = arg.sparse_complex_matrix_value ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
384
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
385 if (! error_state)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
386 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
387 octave_idx_type info;
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
388 SparseComplexCHOL chol (m, info);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
389 if (info == 0)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
390 retval = chol.inverse ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
391 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
392 error ("cholinv: matrix not positive definite");
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
393 }
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
394 }
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
395 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
396 gripe_wrong_type_arg ("cholinv", arg);
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
397 }
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
398 else if (arg.is_single_type ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
399 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
400 if (arg.is_real_type ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
401 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
402 FloatMatrix m = arg.float_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
403
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
404 if (! error_state)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
405 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
406 octave_idx_type info;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
407 FloatCHOL chol (m, info);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
408 if (info == 0)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
409 retval = chol.inverse ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
410 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
411 error ("cholinv: matrix not positive definite");
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
412 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
413 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
414 else if (arg.is_complex_type ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
415 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
416 FloatComplexMatrix m = arg.float_complex_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
417
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
418 if (! error_state)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
419 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
420 octave_idx_type info;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
421 FloatComplexCHOL chol (m, info);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
422 if (info == 0)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
423 retval = chol.inverse ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
424 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
425 error ("cholinv: matrix not positive definite");
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
426 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
427 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
428 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
429 gripe_wrong_type_arg ("chol", arg);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
430 }
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
431 else
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
432 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
433 if (arg.is_real_type ())
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
434 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
435 Matrix m = arg.matrix_value ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
436
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
437 if (! error_state)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
438 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
439 octave_idx_type info;
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
440 CHOL chol (m, info);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
441 if (info == 0)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
442 retval = chol.inverse ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
443 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
444 error ("cholinv: matrix not positive definite");
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
445 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
446 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
447 else if (arg.is_complex_type ())
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
448 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
449 ComplexMatrix m = arg.complex_matrix_value ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
450
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
451 if (! error_state)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
452 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
453 octave_idx_type info;
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
454 ComplexCHOL chol (m, info);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
455 if (info == 0)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
456 retval = chol.inverse ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
457 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
458 error ("cholinv: matrix not positive definite");
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
459 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
460 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
461 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
462 gripe_wrong_type_arg ("chol", arg);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
463 }
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
464 }
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
465 }
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
466 else
5823
080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe]
jwe
parents: 5760
diff changeset
467 print_usage ();
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
468
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
469 return retval;
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
470 }
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
471
5760
8d7162924bd3 [project @ 2006-04-14 04:01:37 by jwe]
jwe
parents: 5448
diff changeset
472 DEFUN_DLD (chol2inv, args, ,
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
473 "-*- texinfo -*-\n\
5343
be0bd7a760c9 [project @ 2005-05-06 18:04:16 by jwe]
jwe
parents: 5340
diff changeset
474 @deftypefn {Loadable Function} {} chol2inv (@var{u})\n\
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
475 Invert a symmetric, positive definite square matrix from its Cholesky\n\
5343
be0bd7a760c9 [project @ 2005-05-06 18:04:16 by jwe]
jwe
parents: 5340
diff changeset
476 decomposition, @var{u}. Note that @var{u} should be an upper-triangular\n\
be0bd7a760c9 [project @ 2005-05-06 18:04:16 by jwe]
jwe
parents: 5340
diff changeset
477 matrix with positive diagonal elements. @code{chol2inv (@var{u})}\n\
be0bd7a760c9 [project @ 2005-05-06 18:04:16 by jwe]
jwe
parents: 5340
diff changeset
478 provides @code{inv (@var{u}'*@var{u})} but it is much faster than\n\
be0bd7a760c9 [project @ 2005-05-06 18:04:16 by jwe]
jwe
parents: 5340
diff changeset
479 using @code{inv}.\n\
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
480 @seealso{chol, cholinv}\n\
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
481 @end deftypefn")
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
482 {
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
483 octave_value retval;
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
484
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
485 int nargin = args.length ();
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
486
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
487 if (nargin == 1)
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
488 {
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
489 octave_value arg = args(0);
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
490
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
491 octave_idx_type nr = arg.rows ();
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
492 octave_idx_type nc = arg.columns ();
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
493
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
494 if (nr == 0 || nc == 0)
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
495 retval = Matrix ();
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
496 else
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
497 {
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
498 if (arg.is_sparse_type ())
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
499 {
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
500 if (arg.is_real_type ())
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
501 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
502 SparseMatrix r = arg.sparse_matrix_value ();
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
503
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
504 if (! error_state)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
505 retval = chol2inv (r);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
506 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
507 else if (arg.is_complex_type ())
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
508 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
509 SparseComplexMatrix r = arg.sparse_complex_matrix_value ();
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
510
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
511 if (! error_state)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
512 retval = chol2inv (r);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
513 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
514 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
515 gripe_wrong_type_arg ("chol2inv", arg);
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
516 }
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
517 else if (arg.is_single_type ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
518 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
519 if (arg.is_real_type ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
520 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
521 FloatMatrix r = arg.float_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
522
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
523 if (! error_state)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
524 retval = chol2inv (r);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
525 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
526 else if (arg.is_complex_type ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
527 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
528 FloatComplexMatrix r = arg.float_complex_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
529
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
530 if (! error_state)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
531 retval = chol2inv (r);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
532 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
533 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
534 gripe_wrong_type_arg ("chol2inv", arg);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
535
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
536 }
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
537 else
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
538 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
539 if (arg.is_real_type ())
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
540 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
541 Matrix r = arg.matrix_value ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
542
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
543 if (! error_state)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
544 retval = chol2inv (r);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
545 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
546 else if (arg.is_complex_type ())
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
547 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
548 ComplexMatrix r = arg.complex_matrix_value ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
549
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
550 if (! error_state)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
551 retval = chol2inv (r);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
552 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
553 else
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
554 gripe_wrong_type_arg ("chol2inv", arg);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
555 }
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
556 }
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
557 }
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
558 else
5823
080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe]
jwe
parents: 5760
diff changeset
559 print_usage ();
5340
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
560
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
561 return retval;
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
562 }
15843d76156d [project @ 2005-05-06 16:26:58 by jwe]
jwe
parents: 5307
diff changeset
563
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
564 DEFUN_DLD (cholupdate, args, nargout,
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
565 "-*- texinfo -*-\n\
7650
eb7bdde776f2 Texinfo fixes
John W. Eaton <jwe@octave.org>
parents: 7559
diff changeset
566 @deftypefn {Loadable Function} {[@var{R1}, @var{info}] =} cholupdate (@var{R}, @var{u}, @var{op})\n\
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
567 Update or downdate a Cholesky factorization. Given an upper triangular\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
568 matrix @var{R} and a column vector @var{u}, attempt to determine another\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
569 upper triangular matrix @var{R1} such that\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
570 @itemize @bullet\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
571 @item\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
572 @var{R1}'*@var{R1} = @var{R}'*@var{R} + @var{u}*@var{u}'\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
573 if @var{op} is \"+\"\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
574 @item\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
575 @var{R1}'*@var{R1} = @var{R}'*@var{R} - @var{u}*@var{u}'\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
576 if @var{op} is \"-\"\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
577 @end itemize\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
578 \n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
579 If @var{op} is \"-\", @var{info} is set to\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
580 @itemize\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
581 @item 0 if the downdate was successful,\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
582 @item 1 if @var{R}'*@var{R} - @var{u}*@var{u}' is not positive definite,\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
583 @item 2 if @var{R} is singular.\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
584 @end itemize\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
585 \n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
586 If @var{info} is not present, an error message is printed in cases 1 and 2.\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
587 @seealso{chol, qrupdate}\n\
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
588 @end deftypefn")
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
589 {
7559
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
590 octave_idx_type nargin = args.length ();
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
591
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
592 octave_value_list retval;
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
593
7559
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
594 if (nargin > 3 || nargin < 2)
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
595 {
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
596 print_usage ();
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
597 return retval;
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
598 }
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
599
7559
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
600 octave_value argr = args(0);
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
601 octave_value argu = args(1);
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
602
7559
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
603 if (argr.is_matrix_type () && argu.is_matrix_type ()
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
604 && (nargin < 3 || args(2).is_string ()))
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
605 {
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
606 octave_idx_type n = argr.rows ();
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
607
7559
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
608 std::string op = (nargin < 3) ? "+" : args(2).string_value ();
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
609
7559
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
610 bool down = op == "-";
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
611
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
612 if (down || op == "+")
07522d7dcdf8 fixes to QR and Cholesky updating code
Jaroslav Hajek <highegg@gmail.com>
parents: 7554
diff changeset
613 if (argr.columns () == n && argu.rows () == n && argu.columns () == 1)
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
614 {
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
615 if (argr.is_single_type () || argu.is_single_type ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
616 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
617 if (argr.is_real_matrix () && argu.is_real_matrix ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
618 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
619 // real case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
620 FloatMatrix R = argr.float_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
621 FloatMatrix u = argu.float_matrix_value ();
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
622
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
623 FloatCHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
624 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
625 int err = 0;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
626
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
627 if (down)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
628 err = fact.downdate (u);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
629 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
630 fact.update (u);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
631
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
632 if (nargout > 1)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
633 retval(1) = err;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
634 else if (err)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
635 error ("cholupdate: downdate violates positiveness");
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
636
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
637 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
638 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
639 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
640 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
641 // complex case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
642 FloatComplexMatrix R = argr.float_complex_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
643 FloatComplexMatrix u = argu.float_complex_matrix_value ();
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
644
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
645 FloatComplexCHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
646 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
647 int err = 0;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
648
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
649 if (down)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
650 err = fact.downdate (u);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
651 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
652 fact.update (u);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
653
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
654 if (nargout > 1)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
655 retval(1) = err;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
656 else if (err)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
657 error ("cholupdate: downdate violates positiveness");
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
658
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
659 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
660 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
661 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
662 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
663 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
664 if (argr.is_real_matrix () && argu.is_real_matrix ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
665 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
666 // real case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
667 Matrix R = argr.matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
668 Matrix u = argu.matrix_value ();
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
669
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
670 CHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
671 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
672 int err = 0;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
673
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
674 if (down)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
675 err = fact.downdate (u);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
676 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
677 fact.update (u);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
678
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
679 if (nargout > 1)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
680 retval(1) = err;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
681 else if (err)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
682 error ("cholupdate: downdate violates positiveness");
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
683
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
684 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
685 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
686 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
687 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
688 // complex case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
689 ComplexMatrix R = argr.complex_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
690 ComplexMatrix u = argu.complex_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
691
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
692 ComplexCHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
693 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
694 int err = 0;
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
695
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
696 if (down)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
697 err = fact.downdate (u);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
698 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
699 fact.update (u);
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
700
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
701 if (nargout > 1)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
702 retval(1) = err;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
703 else if (err)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
704 error ("cholupdate: downdate violates positiveness");
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
705
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
706 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
707 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
708 }
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
709 }
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
710 else
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
711 error ("cholupdate: dimension mismatch");
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
712 else
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
713 error ("cholupdate: op must be \"+\" or \"-\"");
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
714 }
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
715 else
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
716 print_usage ();
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
717
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
718 return retval;
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
719 }
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
720
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
721 /*
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
722 %!shared A, u, Ac, uc
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
723 %! A = [ 0.436997 -0.131721 0.124120 -0.061673 ;
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
724 %! -0.131721 0.738529 0.019851 -0.140295 ;
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
725 %! 0.124120 0.019851 0.354879 -0.059472 ;
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
726 %! -0.061673 -0.140295 -0.059472 0.600939 ];
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
727 %!
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
728 %! u = [ 0.98950 ;
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
729 %! 0.39844 ;
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
730 %! 0.63484 ;
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
731 %! 0.13351 ];
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
732 %! Ac = [ 0.5585528 + 0.0000000i -0.1662088 - 0.0315341i 0.0107873 + 0.0236411i -0.0276775 - 0.0186073i ;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
733 %! -0.1662088 + 0.0315341i 0.6760061 + 0.0000000i 0.0011452 - 0.0475528i 0.0145967 + 0.0247641i ;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
734 %! 0.0107873 - 0.0236411i 0.0011452 + 0.0475528i 0.6263149 - 0.0000000i -0.1585837 - 0.0719763i ;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
735 %! -0.0276775 + 0.0186073i 0.0145967 - 0.0247641i -0.1585837 + 0.0719763i 0.6034234 - 0.0000000i ];
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
736 %!
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
737 %! uc = [ 0.54267 + 0.91519i ;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
738 %! 0.99647 + 0.43141i ;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
739 %! 0.83760 + 0.68977i ;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
740 %! 0.39160 + 0.90378i ];
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
741
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
742
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
743
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
744 %!test
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
745 %! R = chol(A);
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
746 %!
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
747 %! R1 = cholupdate(R,u);
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
748 %!
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
749 %! assert(norm(triu(R1)-R1,Inf) == 0)
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
750 %! assert(norm(R1'*R1 - R'*R - u*u',Inf) < 1e1*eps)
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
751 %!
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
752 %! R1 = cholupdate(R1,u,"-");
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
753 %!
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
754 %! assert(norm(triu(R1)-R1,Inf) == 0)
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
755 %! assert(norm(R1 - R,Inf) < 1e1*eps)
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
756 %!
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
757 %!test
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
758 %! R = chol(Ac);
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
759 %!
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
760 %! R1 = cholupdate(R,uc);
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
761 %!
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
762 %! assert(norm(triu(R1)-R1,Inf) == 0)
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
763 %! assert(norm(R1'*R1 - R'*R - uc*uc',Inf) < 1e1*eps)
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
764 %!
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
765 %! R1 = cholupdate(R1,uc,"-");
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
766 %!
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
767 %! assert(norm(triu(R1)-R1,Inf) == 0)
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
768 %! assert(norm(R1 - R,Inf) < 1e1*eps)
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
769
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
770 %!test
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
771 %! R = chol(single(A));
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
772 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
773 %! R1 = cholupdate(R,single(u));
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
774 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
775 %! assert(norm(triu(R1)-R1,Inf) == 0)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
776 %! assert(norm(R1'*R1 - R'*R - single(u*u'),Inf) < 1e1*eps('single'))
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
777 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
778 %! R1 = cholupdate(R1,single(u),"-");
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
779 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
780 %! assert(norm(triu(R1)-R1,Inf) == 0)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
781 %! assert(norm(R1 - R,Inf) < 1e1*eps('single'))
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
782 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
783 %!test
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
784 %! R = chol(single(Ac));
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
785 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
786 %! R1 = cholupdate(R,single(uc));
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
787 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
788 %! assert(norm(triu(R1)-R1,Inf) == 0)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
789 %! assert(norm(R1'*R1 - R'*R - single(uc*uc'),Inf) < 1e1*eps('single'))
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
790 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
791 %! R1 = cholupdate(R1,single(uc),"-");
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
792 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
793 %! assert(norm(triu(R1)-R1,Inf) == 0)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
794 %! assert(norm(R1 - R,Inf) < 1e1*eps('single'))
7554
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
795 */
40574114c514 implement Cholesky factorization updating
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
796
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
797 DEFUN_DLD (cholinsert, args, nargout,
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
798 "-*- texinfo -*-\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
799 @deftypefn {Loadable Function} {[@var{R1}, @var{info}] =} cholinsert (@var{R}, @var{j}, @var{u})\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
800 Given a Cholesky@tie{}factorization of a real symmetric or complex hermitian\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
801 positive definite matrix @w{@var{A} = @var{R}'*@var{R}}, @var{R}@tie{}upper triangular,\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
802 return the QR@tie{}factorization of\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
803 @var{A1}, where @w{A1(p,p) = A}, @w{A1(:,j) = A1(j,:)' = u} and\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
804 @w{p = [1:j-1,j+1:n+1]}. @w{u(j)} should be positive.\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
805 On return, @var{info} is set to\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
806 @itemize\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
807 @item 0 if the insertion was successful,\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
808 @item 1 if @var{A1} is not positive definite,\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
809 @item 2 if @var{R} is singular.\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
810 @end itemize\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
811 \n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
812 If @var{info} is not present, an error message is printed in cases 1 and 2.\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
813 @seealso{chol, cholupdate, choldelete}\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
814 @end deftypefn")
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
815 {
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
816 octave_idx_type nargin = args.length ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
817
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
818 octave_value_list retval;
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
819
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
820 if (nargin != 3)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
821 {
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
822 print_usage ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
823 return retval;
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
824 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
825
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
826 octave_value argr = args(0);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
827 octave_value argj = args(1);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
828 octave_value argu = args(2);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
829
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
830 if (argr.is_matrix_type () && argu.is_matrix_type ()
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
831 && argj.is_real_scalar ())
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
832 {
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
833 octave_idx_type n = argr.rows ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
834 octave_idx_type j = argj.scalar_value ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
835
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
836 if (argr.columns () == n && argu.rows () == n+1 && argu.columns () == 1)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
837 {
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
838 if (j > 0 && j <= n+1)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
839 {
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
840 if (argr.is_single_type () || argu.is_single_type ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
841 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
842 if (argr.is_real_matrix () && argu.is_real_matrix ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
843 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
844 // real case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
845 FloatMatrix R = argr.float_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
846 FloatMatrix u = argu.float_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
847
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
848 FloatCHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
849 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
850 int err = fact.insert_sym (u, j-1);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
851
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
852 if (nargout > 1)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
853 retval(1) = err;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
854 else if (err)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
855 error ("cholinsert: insertion violates positiveness");
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
856
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
857 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
858 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
859 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
860 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
861 // complex case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
862 FloatComplexMatrix R = argr.float_complex_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
863 FloatComplexMatrix u = argu.float_complex_matrix_value ();
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
864
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
865 FloatComplexCHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
866 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
867 int err = fact.insert_sym (u, j-1);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
868
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
869 if (nargout > 1)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
870 retval(1) = err;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
871 else if (err)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
872 error ("cholinsert: insertion violates positiveness");
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
873
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
874 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
875 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
876 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
877 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
878 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
879 if (argr.is_real_matrix () && argu.is_real_matrix ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
880 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
881 // real case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
882 Matrix R = argr.matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
883 Matrix u = argu.matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
884
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
885 CHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
886 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
887 int err = fact.insert_sym (u, j-1);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
888
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
889 if (nargout > 1)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
890 retval(1) = err;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
891 else if (err)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
892 error ("cholinsert: insertion violates positiveness");
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
893
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
894 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
895 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
896 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
897 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
898 // complex case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
899 ComplexMatrix R = argr.complex_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
900 ComplexMatrix u = argu.complex_matrix_value ();
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
901
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
902 ComplexCHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
903 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
904 int err = fact.insert_sym (u, j-1);
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
905
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
906 if (nargout > 1)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
907 retval(1) = err;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
908 else if (err)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
909 error ("cholinsert: insertion violates positiveness");
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
910
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
911 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
912 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
913 }
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
914 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
915 else
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
916 error ("cholinsert: index out of range");
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
917 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
918 else
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
919 error ("cholinsert: dimension mismatch");
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
920 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
921 else
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
922 print_usage ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
923
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
924 return retval;
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
925 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
926
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
927 /*
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
928 %!test
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
929 %! u2 = [ 0.35080 ;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
930 %! 0.63930 ;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
931 %! 3.31057 ;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
932 %! -0.13825 ;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
933 %! 0.45266 ];
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
934 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
935 %! R = chol(A);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
936 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
937 %! j = 3; p = [1:j-1, j+1:5];
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
938 %! R1 = cholinsert(R,j,u2); A1 = R1'*R1;
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
939 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
940 %! assert(norm(triu(R1)-R1,Inf) == 0)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
941 %! assert(norm(A1(p,p) - A,Inf) < 1e1*eps)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
942 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
943 %!test
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
944 %! u2 = [ 0.35080 + 0.04298i;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
945 %! 0.63930 + 0.23778i;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
946 %! 3.31057 + 0.00000i;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
947 %! -0.13825 + 0.19879i;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
948 %! 0.45266 + 0.50020i];
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
949 %!
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
950 %! R = chol(Ac);
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
951 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
952 %! j = 3; p = [1:j-1, j+1:5];
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
953 %! R1 = cholinsert(R,j,u2); A1 = R1'*R1;
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
954 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
955 %! assert(norm(triu(R1)-R1,Inf) == 0)
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
956 %! assert(norm(A1(p,p) - Ac,Inf) < 1e1*eps)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
957 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
958
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
959 %!test
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
960 %! u2 = single ([ 0.35080 ;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
961 %! 0.63930 ;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
962 %! 3.31057 ;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
963 %! -0.13825 ;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
964 %! 0.45266 ]);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
965 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
966 %! R = chol(single(A));
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
967 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
968 %! j = 3; p = [1:j-1, j+1:5];
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
969 %! R1 = cholinsert(R,j,u2); A1 = R1'*R1;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
970 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
971 %! assert(norm(triu(R1)-R1,Inf) == 0)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
972 %! assert(norm(A1(p,p) - A,Inf) < 1e1*eps('single'))
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
973 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
974 %!test
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
975 %! u2 = single ([ 0.35080 + 0.04298i;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
976 %! 0.63930 + 0.23778i;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
977 %! 3.31057 + 0.00000i;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
978 %! -0.13825 + 0.19879i;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
979 %! 0.45266 + 0.50020i]);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
980 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
981 %! R = chol(single(Ac));
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
982 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
983 %! j = 3; p = [1:j-1, j+1:5];
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
984 %! R1 = cholinsert(R,j,u2); A1 = R1'*R1;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
985 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
986 %! assert(norm(triu(R1)-R1,Inf) == 0)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
987 %! assert(norm(A1(p,p) - single(Ac),Inf) < 1e1*eps('single'))
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
988 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
989 */
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
990
7924
4976f66d469b miscellaneous cleanup
John W. Eaton <jwe@octave.org>
parents: 7814
diff changeset
991 DEFUN_DLD (choldelete, args, ,
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
992 "-*- texinfo -*-\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
993 @deftypefn {Loadable Function} {@var{R1} =} choldelete (@var{R}, @var{j})\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
994 Given a Cholesky@tie{}factorization of a real symmetric or complex hermitian\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
995 positive definite matrix @w{@var{A} = @var{R}'*@var{R}}, @var{R}@tie{}upper triangular,\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
996 return the QR@tie{}factorization of @w{A(p,p)}, where @w{p = [1:j-1,j+1:n+1]}.\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
997 @seealso{chol, cholupdate, cholinsert}\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
998 @end deftypefn")
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
999 {
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1000 octave_idx_type nargin = args.length ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1001
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1002 octave_value_list retval;
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1003
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1004 if (nargin != 2)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1005 {
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1006 print_usage ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1007 return retval;
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1008 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1009
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1010 octave_value argr = args(0);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1011 octave_value argj = args(1);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1012
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1013 if (argr.is_matrix_type () && argj.is_real_scalar ())
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1014 {
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1015 octave_idx_type n = argr.rows ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1016 octave_idx_type j = argj.scalar_value ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1017
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1018 if (argr.columns () == n)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1019 {
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1020 if (j > 0 && j <= n)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1021 {
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1022 if (argr.is_single_type ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1023 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1024 if (argr.is_real_matrix ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1025 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1026 // real case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1027 FloatMatrix R = argr.float_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1028
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1029 FloatCHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1030 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1031 fact.delete_sym (j-1);
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1032
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1033 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1034 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1035 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1036 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1037 // complex case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1038 FloatComplexMatrix R = argr.float_complex_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1039
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1040 FloatComplexCHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1041 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1042 fact.delete_sym (j-1);
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1043
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1044 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1045 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1046 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1047 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1048 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1049 if (argr.is_real_matrix ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1050 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1051 // real case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1052 Matrix R = argr.matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1053
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1054 CHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1055 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1056 fact.delete_sym (j-1);
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1057
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1058 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1059 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1060 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1061 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1062 // complex case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1063 ComplexMatrix R = argr.complex_matrix_value ();
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1064
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1065 ComplexCHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1066 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1067 fact.delete_sym (j-1);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1068
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1069 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1070 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1071 }
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1072 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1073 else
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1074 error ("choldelete: index out of range");
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1075 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1076 else
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1077 error ("choldelete: dimension mismatch");
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1078 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1079 else
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1080 print_usage ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1081
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1082 return retval;
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1083 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1084
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1085 /*
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1086 %!test
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1087 %! R = chol(A);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1088 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1089 %! j = 3; p = [1:j-1,j+1:4];
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1090 %! R1 = choldelete(R,j);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1091 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1092 %! assert(norm(triu(R1)-R1,Inf) == 0)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1093 %! assert(norm(R1'*R1 - A(p,p),Inf) < 1e1*eps)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1094 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1095 %!test
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1096 %! R = chol(Ac);
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1097 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1098 %! j = 3; p = [1:j-1,j+1:4];
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1099 %! R1 = choldelete(R,j);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1100 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1101 %! assert(norm(triu(R1)-R1,Inf) == 0)
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1102 %! assert(norm(R1'*R1 - Ac(p,p),Inf) < 1e1*eps)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1103
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1104 %!test
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1105 %! R = chol(single(A));
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1106 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1107 %! j = 3; p = [1:j-1,j+1:4];
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1108 %! R1 = choldelete(R,j);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1109 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1110 %! assert(norm(triu(R1)-R1,Inf) == 0)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1111 %! assert(norm(R1'*R1 - single(A(p,p)),Inf) < 1e1*eps('single'))
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1112 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1113 %!test
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1114 %! R = chol(single(Ac));
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1115 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1116 %! j = 3; p = [1:j-1,j+1:4];
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1117 %! R1 = choldelete(R,j);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1118 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1119 %! assert(norm(triu(R1)-R1,Inf) == 0)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1120 %! assert(norm(R1'*R1 - single(Ac(p,p)),Inf) < 1e1*eps('single'))
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1121 */
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1122
7924
4976f66d469b miscellaneous cleanup
John W. Eaton <jwe@octave.org>
parents: 7814
diff changeset
1123 DEFUN_DLD (cholshift, args, ,
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1124 "-*- texinfo -*-\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1125 @deftypefn {Loadable Function} {@var{R1} =} cholshift (@var{R}, @var{i}, @var{j})\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1126 Given a Cholesky@tie{}factorization of a real symmetric or complex hermitian\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1127 positive definite matrix @w{@var{A} = @var{R}'*@var{R}}, @var{R}@tie{}upper triangular,\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1128 return the QR@tie{}factorization of\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1129 @w{@var{A}(p,p)}, where @w{p} is the permutation @*\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1130 @code{p = [1:i-1, shift(i:j, 1), j+1:n]} if @w{@var{i} < @var{j}} @*\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1131 or @*\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1132 @code{p = [1:j-1, shift(j:i,-1), i+1:n]} if @w{@var{j} < @var{i}}. @*\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1133 \n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1134 @seealso{chol, cholinsert, choldelete}\n\
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1135 @end deftypefn")
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1136 {
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1137 octave_idx_type nargin = args.length ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1138
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1139 octave_value_list retval;
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1140
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1141 if (nargin != 3)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1142 {
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1143 print_usage ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1144 return retval;
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1145 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1146
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1147 octave_value argr = args(0);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1148 octave_value argi = args(1);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1149 octave_value argj = args(2);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1150
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1151 if (argr.is_matrix_type () && argi.is_real_scalar () && argj.is_real_scalar ())
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1152 {
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1153 octave_idx_type n = argr.rows ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1154 octave_idx_type i = argi.scalar_value ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1155 octave_idx_type j = argj.scalar_value ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1156
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1157 if (argr.columns () == n)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1158 {
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1159 if (j > 0 && j <= n+1 && i > 0 && i <= n+1)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1160 {
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1161
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1162 if (argr.is_single_type () && argi.is_single_type () &&
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1163 argj.is_single_type ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1164 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1165 if (argr.is_real_matrix ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1166 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1167 // real case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1168 FloatMatrix R = argr.float_matrix_value ();
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1169
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1170 FloatCHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1171 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1172 fact.shift_sym (i-1, j-1);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1173
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1174 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1175 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1176 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1177 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1178 // complex case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1179 FloatComplexMatrix R = argr.float_complex_matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1180
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1181 FloatComplexCHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1182 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1183 fact.shift_sym (i-1, j-1);
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1184
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1185 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1186 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1187 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1188 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1189 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1190 if (argr.is_real_matrix ())
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1191 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1192 // real case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1193 Matrix R = argr.matrix_value ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1194
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1195 CHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1196 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1197 fact.shift_sym (i-1, j-1);
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1198
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1199 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1200 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1201 else
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1202 {
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1203 // complex case
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1204 ComplexMatrix R = argr.complex_matrix_value ();
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1205
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1206 ComplexCHOL fact;
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1207 fact.set (R);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1208 fact.shift_sym (i-1, j-1);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1209
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1210 retval(0) = fact.chol_matrix ();
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1211 }
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1212 }
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1213 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1214 else
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1215 error ("cholshift: index out of range");
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1216 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1217 else
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1218 error ("cholshift: dimension mismatch");
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1219 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1220 else
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1221 print_usage ();
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1222
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1223 return retval;
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1224 }
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1225
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1226 /*
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1227 %!test
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1228 %! R = chol(A);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1229 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1230 %! i = 1; j = 3; p = [1:i-1, shift(i:j,-1), j+1:4];
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1231 %! R1 = cholshift(R,i,j);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1232 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1233 %! assert(norm(triu(R1)-R1,Inf) == 0)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1234 %! assert(norm(R1'*R1 - A(p,p),Inf) < 1e1*eps)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1235 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1236 %! j = 1; i = 3; p = [1:j-1, shift(j:i,+1), i+1:4];
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1237 %! R1 = cholshift(R,i,j);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1238 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1239 %! assert(norm(triu(R1)-R1,Inf) == 0)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1240 %! assert(norm(R1'*R1 - A(p,p),Inf) < 1e1*eps)
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1241 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1242 %!test
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1243 %! R = chol(Ac);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1244 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1245 %! i = 1; j = 3; p = [1:i-1, shift(i:j,-1), j+1:4];
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1246 %! R1 = cholshift(R,i,j);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1247 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1248 %! assert(norm(triu(R1)-R1,Inf) == 0)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1249 %! assert(norm(R1'*R1 - Ac(p,p),Inf) < 1e1*eps)
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1250 %!
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1251 %! j = 1; i = 3; p = [1:j-1, shift(j:i,+1), i+1:4];
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1252 %! R1 = cholshift(R,i,j);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1253 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1254 %! assert(norm(triu(R1)-R1,Inf) == 0)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1255 %! assert(norm(R1'*R1 - Ac(p,p),Inf) < 1e1*eps)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1256
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1257 %!test
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1258 %! R = chol(single(A));
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1259 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1260 %! i = 1; j = 3; p = [1:i-1, shift(i:j,-1), j+1:4];
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1261 %! R1 = cholshift(R,i,j);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1262 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1263 %! assert(norm(triu(R1)-R1,Inf) == 0)
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1264 %! assert(norm(R1'*R1 - single(A(p,p)),Inf) < 1e1*eps('single'))
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1265 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1266 %! j = 1; i = 3; p = [1:j-1, shift(j:i,+1), i+1:4];
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1267 %! R1 = cholshift(R,i,j);
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1268 %!
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1269 %! assert(norm(triu(R1)-R1,Inf) == 0)
7814
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1270 %! assert(norm(R1'*R1 - single(A(p,p)),Inf) < 1e1*eps('single'))
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1271 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1272 %!test
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1273 %! R = chol(single(Ac));
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1274 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1275 %! i = 1; j = 3; p = [1:i-1, shift(i:j,-1), j+1:4];
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1276 %! R1 = cholshift(R,i,j);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1277 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1278 %! assert(norm(triu(R1)-R1,Inf) == 0)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1279 %! assert(norm(R1'*R1 - single(Ac(p,p)),Inf) < 1e1*eps('single'))
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1280 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1281 %! j = 1; i = 3; p = [1:j-1, shift(j:i,+1), i+1:4];
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1282 %! R1 = cholshift(R,i,j);
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1283 %!
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1284 %! assert(norm(triu(R1)-R1,Inf) == 0)
87865ed7405f Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
1285 %! assert(norm(R1'*R1 - single(Ac(p,p)),Inf) < 1e1*eps('single'))
7700
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1286 */
efccca5f2ad7 more QR & Cholesky updating functions
Jaroslav Hajek <highegg@gmail.com>
parents: 7650
diff changeset
1287
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
1288 /*
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
1289 ;;; Local Variables: ***
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
1290 ;;; mode: C++ ***
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
1291 ;;; End: ***
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
1292 */
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
1293