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maint: Update copyright notices for 2015.
author John W. Eaton <jwe@octave.org>
date Wed, 11 Feb 2015 14:19:08 -0500
parents 0850b5212619
children 075a5e2e1ba5
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1 /*
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2
19697
4197fc428c7d maint: Update copyright notices for 2015.
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3 Copyright (C) 2005-2015 David Bateman
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 // This is the octave interface to ccolamd, which bore the copyright given
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24 // in the help of the functions.
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25
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26 #ifdef HAVE_CONFIG_H
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27 #include <config.h>
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28 #endif
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29
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30 #include <cstdlib>
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31
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32 #include <string>
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33 #include <vector>
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34
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35 #include "ov.h"
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36 #include "defun-dld.h"
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37 #include "pager.h"
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38 #include "ov-re-mat.h"
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39
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40 #include "ov-re-sparse.h"
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41 #include "ov-cx-sparse.h"
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42
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43 #include "oct-sparse.h"
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44 #include "oct-locbuf.h"
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45
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46 #ifdef USE_64_BIT_IDX_T
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47 #define CCOLAMD_NAME(name) ccolamd_l ## name
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48 #define CSYMAMD_NAME(name) csymamd_l ## name
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49 #else
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50 #define CCOLAMD_NAME(name) ccolamd ## name
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51 #define CSYMAMD_NAME(name) csymamd ## name
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52 #endif
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53
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54 DEFUN_DLD (ccolamd, args, nargout,
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55 "-*- texinfo -*-\n\
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56 @deftypefn {Loadable Function} {@var{p} =} ccolamd (@var{S})\n\
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57 @deftypefnx {Loadable Function} {@var{p} =} ccolamd (@var{S}, @var{knobs})\n\
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58 @deftypefnx {Loadable Function} {@var{p} =} ccolamd (@var{S}, @var{knobs}, @var{cmember})\n\
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59 @deftypefnx {Loadable Function} {[@var{p}, @var{stats}] =} ccolamd (@dots{})\n\
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60 \n\
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61 Constrained column approximate minimum degree permutation.\n\
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62 @code{@var{p} = ccolamd (@var{S})} returns the column approximate minimum\n\
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63 degree permutation vector for the sparse matrix @var{S}. For a non-symmetric\n\
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64 matrix\n\
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65 @var{S},\n\
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66 @code{@var{S}(:, @var{p})} tends to have sparser LU@tie{}factors than\n\
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67 @var{S}. @code{chol (@var{S}(:, @var{p})' * @var{S}(:, @var{p}))} also\n\
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68 tends to be sparser than @code{chol (@var{S}' * @var{S})}. @code{@var{p} =\n\
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69 ccolamd (@var{S}, 1)} optimizes the ordering for @code{lu (@var{S}(:,\n\
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70 @var{p}))}. The ordering is followed by a column elimination tree\n\
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71 post-ordering.\n\
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72 \n\
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73 @var{knobs} is an optional 1-element to 5-element input vector, with a\n\
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74 default value of @code{[0 10 10 1 0]} if not present or empty. Entries not\n\
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75 present are set to their defaults.\n\
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76 \n\
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77 @table @code\n\
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78 @item @var{knobs}(1)\n\
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79 if nonzero, the ordering is optimized for @code{lu (S(:, p))}. It will be a\n\
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80 poor ordering for @code{chol (@var{S}(:, @var{p})' * @var{S}(:,\n\
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81 @var{p}))}. This is the most important knob for ccolamd.\n\
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82 \n\
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83 @item @var{knobs}(2)\n\
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84 if @var{S} is m-by-n, rows with more than @code{max (16, @var{knobs}(2) *\n\
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85 sqrt (n))} entries are ignored.\n\
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86 \n\
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87 @item @var{knobs}(3)\n\
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88 columns with more than @code{max (16, @var{knobs}(3) * sqrt (min (@var{m},\n\
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89 @var{n})))} entries are ignored and ordered last in the output permutation\n\
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90 (subject to the cmember constraints).\n\
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91 \n\
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92 @item @var{knobs}(4)\n\
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93 if nonzero, aggressive absorption is performed.\n\
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94 \n\
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95 @item @var{knobs}(5)\n\
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96 if nonzero, statistics and knobs are printed.\n\
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97 \n\
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98 @end table\n\
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99 \n\
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100 @var{cmember} is an optional vector of length @math{n}. It defines the\n\
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101 constraints on the column ordering. If @code{@var{cmember}(j) = @var{c}},\n\
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102 then column @var{j} is in constraint set @var{c} (@var{c} must be in the\n\
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103 range 1 to n). In the output permutation @var{p}, all columns in set 1\n\
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104 appear first, followed by all columns in set 2, and so on.\n\
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105 @code{@var{cmember} = ones (1,n)} if not present or empty.\n\
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106 @code{ccolamd (@var{S}, [], 1 : n)} returns @code{1 : n}\n\
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107 \n\
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108 @code{@var{p} = ccolamd (@var{S})} is about the same as\n\
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109 @code{@var{p} = colamd (@var{S})}. @var{knobs} and its default values\n\
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110 differ. @code{colamd} always does aggressive absorption, and it finds an\n\
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111 ordering suitable for both @code{lu (@var{S}(:, @var{p}))} and @code{chol\n\
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112 (@var{S}(:, @var{p})' * @var{S}(:, @var{p}))}; it cannot optimize its\n\
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113 ordering for @code{lu (@var{S}(:, @var{p}))} to the extent that\n\
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114 @code{ccolamd (@var{S}, 1)} can.\n\
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115 \n\
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116 @var{stats} is an optional 20-element output vector that provides data\n\
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117 about the ordering and the validity of the input matrix @var{S}. Ordering\n\
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118 statistics are in @code{@var{stats}(1 : 3)}. @code{@var{stats}(1)} and\n\
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119 @code{@var{stats}(2)} are the number of dense or empty rows and columns\n\
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120 ignored by @sc{ccolamd} and @code{@var{stats}(3)} is the number of garbage\n\
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121 collections performed on the internal data structure used by @sc{ccolamd}\n\
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122 (roughly of size @code{2.2 * nnz (@var{S}) + 4 * @var{m} + 7 * @var{n}}\n\
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123 integers).\n\
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124 \n\
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125 @code{@var{stats}(4 : 7)} provide information if CCOLAMD was able to\n\
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126 continue. The matrix is OK if @code{@var{stats}(4)} is zero, or 1 if\n\
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127 invalid. @code{@var{stats}(5)} is the rightmost column index that is\n\
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128 unsorted or contains duplicate entries, or zero if no such column exists.\n\
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129 @code{@var{stats}(6)} is the last seen duplicate or out-of-order row\n\
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130 index in the column index given by @code{@var{stats}(5)}, or zero if no\n\
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131 such row index exists. @code{@var{stats}(7)} is the number of duplicate\n\
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132 or out-of-order row indices. @code{@var{stats}(8 : 20)} is always zero in\n\
10840
89f4d7e294cc Grammarcheck .cc files
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parents: 10791
diff changeset
133 the current version of @sc{ccolamd} (reserved for future use).\n\
5451
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diff changeset
134 \n\
19040
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diff changeset
135 The authors of the code itself are @nospell{S. Larimore, T. Davis}\n\
0850b5212619 doc: Add @nospell macro around proper names in documentation.
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parents: 18679
diff changeset
136 (Univ. of Florida) and @nospell{S. Rajamanickam} in collaboration with\n\
0850b5212619 doc: Add @nospell macro around proper names in documentation.
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parents: 18679
diff changeset
137 @nospell{J. Bilbert and E. Ng}. Supported by the National Science Foundation\n\
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parents: 18679
diff changeset
138 @nospell{(DMS-9504974, DMS-9803599, CCR-0203270)}, and a grant from\n\
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parents: 18679
diff changeset
139 @nospell{Sandia} National Lab.\n\
0850b5212619 doc: Add @nospell macro around proper names in documentation.
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parents: 18679
diff changeset
140 See @url{http://www.cise.ufl.edu/research/sparse} for\n\
16826
a4969508008e doc: Periodic spellcheck of the documentation.
Rik <rik@octave.org>
parents: 16313
diff changeset
141 ccolamd, csymamd, amd, colamd, symamd, and other related orderings.\n\
5642
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diff changeset
142 @seealso{colamd, csymamd}\n\
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diff changeset
143 @end deftypefn")
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diff changeset
144 {
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diff changeset
145 octave_value_list retval;
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diff changeset
146
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147 #ifdef HAVE_CCOLAMD
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148
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149 int nargin = args.length ();
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diff changeset
150 int spumoni = 0;
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diff changeset
151
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diff changeset
152 if (nargout > 2 || nargin < 1 || nargin > 3)
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diff changeset
153 usage ("ccolamd: incorrect number of input and/or output arguments");
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154 else
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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155 {
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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156 // Get knobs
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diff changeset
157 OCTAVE_LOCAL_BUFFER (double, knobs, CCOLAMD_KNOBS);
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158 CCOLAMD_NAME (_set_defaults) (knobs);
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159
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diff changeset
160 // Check for user-passed knobs
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diff changeset
161 if (nargin > 1)
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diff changeset
162 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
163 NDArray User_knobs = args(1).array_value ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
164 int nel_User_knobs = User_knobs.length ();
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165
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166 if (nel_User_knobs > 0)
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parents: 14854
diff changeset
167 knobs[CCOLAMD_LU] = (User_knobs(0) != 0);
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diff changeset
168 if (nel_User_knobs > 1)
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parents: 14854
diff changeset
169 knobs[CCOLAMD_DENSE_ROW] = User_knobs(1);
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diff changeset
170 if (nel_User_knobs > 2)
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parents: 14854
diff changeset
171 knobs[CCOLAMD_DENSE_COL] = User_knobs(2);
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diff changeset
172 if (nel_User_knobs > 3)
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diff changeset
173 knobs[CCOLAMD_AGGRESSIVE] = (User_knobs(3) != 0);
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diff changeset
174 if (nel_User_knobs > 4)
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Rik <rik@octave.org>
parents: 14854
diff changeset
175 spumoni = (User_knobs(4) != 0);
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diff changeset
176
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diff changeset
177 // print knob settings if spumoni is set
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
178 if (spumoni)
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diff changeset
179 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
180 octave_stdout << "\nccolamd version " << CCOLAMD_MAIN_VERSION << "."
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parents: 11553
diff changeset
181 << CCOLAMD_SUB_VERSION << ", " << CCOLAMD_DATE
15021
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Rik <rik@octave.org>
parents: 15020
diff changeset
182 << ":\nknobs(1): " << User_knobs(0) << ", order for ";
15020
560317fd5977 maint: Cuddle open bracket used for indexing C++ arrays in source code.
Rik <rik@octave.org>
parents: 14854
diff changeset
183 if (knobs[CCOLAMD_LU] != 0)
14854
5ae9f0f77635 maint: Use Octave coding conventions for coddling parenthis is DLD-FUNCTIONS directory
Rik <octave@nomad.inbox5.com>
parents: 14846
diff changeset
184 octave_stdout << "lu (A)\n";
10154
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diff changeset
185 else
14854
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parents: 14846
diff changeset
186 octave_stdout << "chol (A'*A)\n";
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187
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parents: 14854
diff changeset
188 if (knobs[CCOLAMD_DENSE_ROW] >= 0)
15021
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Rik <rik@octave.org>
parents: 15020
diff changeset
189 octave_stdout << "knobs(2): " << User_knobs(1)
14854
5ae9f0f77635 maint: Use Octave coding conventions for coddling parenthis is DLD-FUNCTIONS directory
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diff changeset
190 << ", rows with > max (16,"
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
191 << knobs[CCOLAMD_DENSE_ROW]
175b392e91fe Use GNU style coding conventions for code in libinterp/
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parents: 17744
diff changeset
192 << "*sqrt (size(A,2)))"
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
193 << " entries removed\n";
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
194 else
15021
0fd364b9bf63 maint: Cuddle parenthesis for indexing expressions in ccolamd.cc.
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diff changeset
195 octave_stdout << "knobs(2): " << User_knobs(1)
10154
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diff changeset
196 << ", no dense rows removed\n";
5451
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diff changeset
197
15020
560317fd5977 maint: Cuddle open bracket used for indexing C++ arrays in source code.
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parents: 14854
diff changeset
198 if (knobs[CCOLAMD_DENSE_COL] >= 0)
15021
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Rik <rik@octave.org>
parents: 15020
diff changeset
199 octave_stdout << "knobs(3): " << User_knobs(2)
14854
5ae9f0f77635 maint: Use Octave coding conventions for coddling parenthis is DLD-FUNCTIONS directory
Rik <octave@nomad.inbox5.com>
parents: 14846
diff changeset
200 << ", cols with > max (16,"
15020
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Rik <rik@octave.org>
parents: 14854
diff changeset
201 << knobs[CCOLAMD_DENSE_COL] << "*sqrt (size(A)))"
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
202 << " entries removed\n";
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
203 else
15021
0fd364b9bf63 maint: Cuddle parenthesis for indexing expressions in ccolamd.cc.
Rik <rik@octave.org>
parents: 15020
diff changeset
204 octave_stdout << "knobs(3): " << User_knobs(2)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
205 << ", no dense columns removed\n";
5451
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parents:
diff changeset
206
15020
560317fd5977 maint: Cuddle open bracket used for indexing C++ arrays in source code.
Rik <rik@octave.org>
parents: 14854
diff changeset
207 if (knobs[CCOLAMD_AGGRESSIVE] != 0)
11586
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John W. Eaton <jwe@octave.org>
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diff changeset
208 octave_stdout << "knobs(4): " << User_knobs(3)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
209 << ", aggressive absorption: yes";
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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parents: 9064
diff changeset
210 else
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diff changeset
211 octave_stdout << "knobs(4): " << User_knobs(3)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
212 << ", aggressive absorption: no";
11586
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John W. Eaton <jwe@octave.org>
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diff changeset
213
15021
0fd364b9bf63 maint: Cuddle parenthesis for indexing expressions in ccolamd.cc.
Rik <rik@octave.org>
parents: 15020
diff changeset
214 octave_stdout << "knobs(5): " << User_knobs(4)
10154
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diff changeset
215 << ", statistics and knobs printed\n";
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
216 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
217 }
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diff changeset
218
5451
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parents:
diff changeset
219 octave_idx_type n_row, n_col, nnz;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
220 octave_idx_type *ridx, *cidx;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
221 SparseComplexMatrix scm;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
222 SparseMatrix sm;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
223
5631
7171d19706df [project @ 2006-02-22 20:15:06 by dbateman]
dbateman
parents: 5604
diff changeset
224 if (args(0).is_sparse_type ())
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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parents: 9064
diff changeset
225 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
226 if (args(0).is_complex_type ())
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
227 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
228 scm = args(0). sparse_complex_matrix_value ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
229 n_row = scm.rows ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
230 n_col = scm.cols ();
10527
b4d2080b6df7 Replace nzmax by nnz as needed
David Bateman <dbateman@free.fr>
parents: 10282
diff changeset
231 nnz = scm.nnz ();
10154
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diff changeset
232 ridx = scm.xridx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
233 cidx = scm.xcidx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
234 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
235 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
236 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
237 sm = args(0).sparse_matrix_value ();
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diff changeset
238
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diff changeset
239 n_row = sm.rows ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
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diff changeset
240 n_col = sm.cols ();
10527
b4d2080b6df7 Replace nzmax by nnz as needed
David Bateman <dbateman@free.fr>
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diff changeset
241 nnz = sm.nnz ();
10154
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diff changeset
242 ridx = sm.xridx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
243 cidx = sm.xcidx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
244 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
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diff changeset
245 }
5451
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diff changeset
246 else
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diff changeset
247 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
248 if (args(0).is_complex_type ())
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
249 sm = SparseMatrix (real (args(0).complex_matrix_value ()));
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
250 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
251 sm = SparseMatrix (args(0).matrix_value ());
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diff changeset
252
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diff changeset
253 n_row = sm.rows ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
254 n_col = sm.cols ();
10527
b4d2080b6df7 Replace nzmax by nnz as needed
David Bateman <dbateman@free.fr>
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diff changeset
255 nnz = sm.nnz ();
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diff changeset
256 ridx = sm.xridx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
257 cidx = sm.xcidx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
258 }
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diff changeset
259
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
260 // Allocate workspace for ccolamd
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
261 OCTAVE_LOCAL_BUFFER (octave_idx_type, p, n_col+1);
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
262 for (octave_idx_type i = 0; i < n_col+1; i++)
15020
560317fd5977 maint: Cuddle open bracket used for indexing C++ arrays in source code.
Rik <rik@octave.org>
parents: 14854
diff changeset
263 p[i] = cidx[i];
5451
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diff changeset
264
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
265 octave_idx_type Alen = CCOLAMD_NAME (_recommended) (nnz, n_row, n_col);
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
266 OCTAVE_LOCAL_BUFFER (octave_idx_type, A, Alen);
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
267 for (octave_idx_type i = 0; i < nnz; i++)
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268 A[i] = ridx[i];
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269
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270 OCTAVE_LOCAL_BUFFER (octave_idx_type, stats, CCOLAMD_STATS);
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271
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272 if (nargin > 2)
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273 {
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274 NDArray in_cmember = args(2).array_value ();
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275 octave_idx_type cslen = in_cmember.length ();
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276 OCTAVE_LOCAL_BUFFER (octave_idx_type, cmember, cslen);
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277 for (octave_idx_type i = 0; i < cslen; i++)
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278 // convert cmember from 1-based to 0-based
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279 cmember[i] = static_cast<octave_idx_type>(in_cmember(i) - 1);
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280
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281 if (cslen != n_col)
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282 error ("ccolamd: CMEMBER must be of length equal to #cols of A");
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283 else
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284 // Order the columns (destroys A)
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285 if (! CCOLAMD_NAME () (n_row, n_col, Alen, A, p,
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286 knobs, stats, cmember))
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287 {
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288 CCOLAMD_NAME (_report) (stats) ;
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289 error ("ccolamd: internal error!");
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290 return retval;
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291 }
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292 }
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293 else
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294 {
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295 // Order the columns (destroys A)
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296 if (! CCOLAMD_NAME () (n_row, n_col, Alen, A, p, knobs, stats, 0))
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297 {
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298 CCOLAMD_NAME (_report) (stats) ;
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299 error ("ccolamd: internal error!");
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300 return retval;
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301 }
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302 }
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303
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304 // return the permutation vector
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305 NDArray out_perm (dim_vector (1, n_col));
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306 for (octave_idx_type i = 0; i < n_col; i++)
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307 out_perm(i) = p[i] + 1;
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308
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309 retval(0) = out_perm;
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310
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311 // print stats if spumoni > 0
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312 if (spumoni > 0)
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313 CCOLAMD_NAME (_report) (stats) ;
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314
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315 // Return the stats vector
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316 if (nargout == 2)
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317 {
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318 NDArray out_stats (dim_vector (1, CCOLAMD_STATS));
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319 for (octave_idx_type i = 0 ; i < CCOLAMD_STATS ; i++)
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diff changeset
320 out_stats(i) = stats[i] ;
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321 retval(1) = out_stats;
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322
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323 // fix stats (5) and (6), for 1-based information on
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324 // jumbled matrix. note that this correction doesn't
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325 // occur if symamd returns FALSE
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326 out_stats (CCOLAMD_INFO1) ++ ;
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327 out_stats (CCOLAMD_INFO2) ++ ;
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328 }
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329 }
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330
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331 #else
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332
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diff changeset
333 error ("ccolamd: not available in this version of Octave");
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334
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diff changeset
335 #endif
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diff changeset
336
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337 return retval;
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338 }
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339
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diff changeset
340 DEFUN_DLD (csymamd, args, nargout,
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341 "-*- texinfo -*-\n\
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342 @deftypefn {Loadable Function} {@var{p} =} csymamd (@var{S})\n\
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343 @deftypefnx {Loadable Function} {@var{p} =} csymamd (@var{S}, @var{knobs})\n\
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344 @deftypefnx {Loadable Function} {@var{p} =} csymamd (@var{S}, @var{knobs}, @var{cmember})\n\
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345 @deftypefnx {Loadable Function} {[@var{p}, @var{stats}] =} csymamd (@dots{})\n\
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346 \n\
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347 For a symmetric positive definite matrix @var{S}, returns the permutation\n\
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diff changeset
348 vector @var{p} such that @code{@var{S}(@var{p},@var{p})} tends to have a\n\
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diff changeset
349 sparser Cholesky@tie{}factor than @var{S}. Sometimes @code{csymamd} works\n\
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diff changeset
350 well for symmetric indefinite matrices too. The matrix @var{S} is assumed\n\
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diff changeset
351 to be symmetric; only the strictly lower triangular part is referenced.\n\
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352 @var{S} must be square. The ordering is followed by an elimination tree\n\
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diff changeset
353 post-ordering.\n\
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354 \n\
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355 @var{knobs} is an optional 1-element to 3-element input vector, with a\n\
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diff changeset
356 default value of @code{[10 1 0]} if present or empty. Entries not\n\
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357 present are set to their defaults.\n\
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358 \n\
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359 @table @code\n\
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360 @item @var{knobs}(1)\n\
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diff changeset
361 If @var{S} is n-by-n, then rows and columns with more than\n\
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diff changeset
362 @code{max(16,@var{knobs}(1)*sqrt(n))} entries are ignored, and ordered\n\
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diff changeset
363 last in the output permutation (subject to the cmember constraints).\n\
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364 \n\
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365 @item @var{knobs}(2)\n\
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366 If nonzero, aggressive absorption is performed.\n\
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367 \n\
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368 @item @var{knobs}(3)\n\
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369 If nonzero, statistics and knobs are printed.\n\
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370 \n\
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371 @end table\n\
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372 \n\
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373 @var{cmember} is an optional vector of length n. It defines the constraints\n\
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diff changeset
374 on the ordering. If @code{@var{cmember}(j) = @var{S}}, then row/column j is\n\
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diff changeset
375 in constraint set @var{c} (@var{c} must be in the range 1 to n). In the\n\
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diff changeset
376 output permutation @var{p}, rows/columns in set 1 appear first, followed\n\
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diff changeset
377 by all rows/columns in set 2, and so on. @code{@var{cmember} = ones (1,n)}\n\
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diff changeset
378 if not present or empty. @code{csymamd (@var{S},[],1:n)} returns @code{1:n}.\n\
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379 \n\
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diff changeset
380 @code{@var{p} = csymamd (@var{S})} is about the same as @code{@var{p} =\n\
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diff changeset
381 symamd (@var{S})}. @var{knobs} and its default values differ.\n\
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diff changeset
382 \n\
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diff changeset
383 @code{@var{stats}(4:7)} provide information if CCOLAMD was able to\n\
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diff changeset
384 continue. The matrix is OK if @code{@var{stats}(4)} is zero, or 1 if\n\
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diff changeset
385 invalid. @code{@var{stats}(5)} is the rightmost column index that is\n\
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diff changeset
386 unsorted or contains duplicate entries, or zero if no such column exists.\n\
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diff changeset
387 @code{@var{stats}(6)} is the last seen duplicate or out-of-order row\n\
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diff changeset
388 index in the column index given by @code{@var{stats}(5)}, or zero if no\n\
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diff changeset
389 such row index exists. @code{@var{stats}(7)} is the number of duplicate\n\
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diff changeset
390 or out-of-order row indices. @code{@var{stats}(8:20)} is always zero in\n\
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parents: 10791
diff changeset
391 the current version of @sc{ccolamd} (reserved for future use).\n\
5451
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diff changeset
392 \n\
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parents: 18679
diff changeset
393 The authors of the code itself are @nospell{S. Larimore, T. Davis}\n\
0850b5212619 doc: Add @nospell macro around proper names in documentation.
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diff changeset
394 (Univ. of Florida) and @nospell{S. Rajamanickam} in collaboration with\n\
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diff changeset
395 @nospell{J. Bilbert and E. Ng}. Supported by the National Science Foundation\n\
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diff changeset
396 @nospell{(DMS-9504974, DMS-9803599, CCR-0203270)}, and a grant from\n\
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diff changeset
397 @nospell{Sandia} National Lab.\n\
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diff changeset
398 See @url{http://www.cise.ufl.edu/research/sparse} for\n\
16826
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diff changeset
399 ccolamd, csymamd, amd, colamd, symamd, and other related orderings.\n\
5642
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diff changeset
400 @seealso{symamd, ccolamd}\n\
2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe]
jwe
parents: 5631
diff changeset
401 @end deftypefn")
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
402 {
5771
9c7be8e14b5b [project @ 2006-04-18 19:17:33 by jwe]
jwe
parents: 5760
diff changeset
403 octave_value_list retval;
9c7be8e14b5b [project @ 2006-04-18 19:17:33 by jwe]
jwe
parents: 5760
diff changeset
404
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
405 #if HAVE_CCOLAMD
5771
9c7be8e14b5b [project @ 2006-04-18 19:17:33 by jwe]
jwe
parents: 5760
diff changeset
406
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
407 int nargin = args.length ();
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
408 int spumoni = 0;
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
409
10282
c9780d8e228c fix invalid checks in amd functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10155
diff changeset
410 if (nargout > 2 || nargin < 1 || nargin > 3)
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
411 usage ("ccolamd: incorrect number of input and/or output arguments");
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
412 else
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
413 {
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
414 // Get knobs
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
415 OCTAVE_LOCAL_BUFFER (double, knobs, CCOLAMD_KNOBS);
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
416 CCOLAMD_NAME (_set_defaults) (knobs);
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
417
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
418 // Check for user-passed knobs
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
419 if (nargin > 1)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
420 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
421 NDArray User_knobs = args(1).array_value ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
422 int nel_User_knobs = User_knobs.length ();
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
423
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
424 if (nel_User_knobs > 0)
15020
560317fd5977 maint: Cuddle open bracket used for indexing C++ arrays in source code.
Rik <rik@octave.org>
parents: 14854
diff changeset
425 knobs[CCOLAMD_DENSE_ROW] = User_knobs(0);
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
426 if (nel_User_knobs > 0)
15020
560317fd5977 maint: Cuddle open bracket used for indexing C++ arrays in source code.
Rik <rik@octave.org>
parents: 14854
diff changeset
427 knobs[CCOLAMD_AGGRESSIVE] = User_knobs(1);
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
428 if (nel_User_knobs > 1)
15020
560317fd5977 maint: Cuddle open bracket used for indexing C++ arrays in source code.
Rik <rik@octave.org>
parents: 14854
diff changeset
429 spumoni = static_cast<int> (User_knobs(2));
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
430
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
431 // print knob settings if spumoni is set
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
432 if (spumoni)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
433 {
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
434 octave_stdout << "\ncsymamd version " << CCOLAMD_MAIN_VERSION
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
435 << "." << CCOLAMD_SUB_VERSION
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
436 << ", " << CCOLAMD_DATE << "\n";
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
437
15020
560317fd5977 maint: Cuddle open bracket used for indexing C++ arrays in source code.
Rik <rik@octave.org>
parents: 14854
diff changeset
438 if (knobs[CCOLAMD_DENSE_ROW] >= 0)
15021
0fd364b9bf63 maint: Cuddle parenthesis for indexing expressions in ccolamd.cc.
Rik <rik@octave.org>
parents: 15020
diff changeset
439 octave_stdout << "knobs(1): " << User_knobs(0)
14854
5ae9f0f77635 maint: Use Octave coding conventions for coddling parenthis is DLD-FUNCTIONS directory
Rik <octave@nomad.inbox5.com>
parents: 14846
diff changeset
440 << ", rows/cols with > max (16,"
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
441 << knobs[CCOLAMD_DENSE_ROW]
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
442 << "*sqrt (size(A,2)))"
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
443 << " entries removed\n";
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
444 else
15021
0fd364b9bf63 maint: Cuddle parenthesis for indexing expressions in ccolamd.cc.
Rik <rik@octave.org>
parents: 15020
diff changeset
445 octave_stdout << "knobs(1): " << User_knobs(0)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
446 << ", no dense rows/cols removed\n";
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
447
15020
560317fd5977 maint: Cuddle open bracket used for indexing C++ arrays in source code.
Rik <rik@octave.org>
parents: 14854
diff changeset
448 if (knobs[CCOLAMD_AGGRESSIVE] != 0)
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
449 octave_stdout << "knobs(2): " << User_knobs(1)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
450 << ", aggressive absorption: yes";
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
451 else
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
452 octave_stdout << "knobs(2): " << User_knobs(1)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
453 << ", aggressive absorption: no";
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
454
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
455
15021
0fd364b9bf63 maint: Cuddle parenthesis for indexing expressions in ccolamd.cc.
Rik <rik@octave.org>
parents: 15020
diff changeset
456 octave_stdout << "knobs(3): " << User_knobs(2)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
457 << ", statistics and knobs printed\n";
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
458 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
459 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
460
13219
cf5ebc0e47e4 fix warnings for unused but set variables and shadowed variables
John W. Eaton <jwe@octave.org>
parents: 11586
diff changeset
461 octave_idx_type n_row, n_col;
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
462 octave_idx_type *ridx, *cidx;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
463 SparseMatrix sm;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
464 SparseComplexMatrix scm;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
465
5631
7171d19706df [project @ 2006-02-22 20:15:06 by dbateman]
dbateman
parents: 5604
diff changeset
466 if (args(0).is_sparse_type ())
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
467 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
468 if (args(0).is_complex_type ())
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
469 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
470 scm = args(0).sparse_complex_matrix_value ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
471 n_row = scm.rows ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
472 n_col = scm.cols ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
473 ridx = scm.xridx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
474 cidx = scm.xcidx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
475 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
476 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
477 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
478 sm = args(0).sparse_matrix_value ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
479 n_row = sm.rows ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
480 n_col = sm.cols ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
481 ridx = sm.xridx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
482 cidx = sm.xcidx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
483 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
484 }
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
485 else
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
486 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
487 if (args(0).is_complex_type ())
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
488 sm = SparseMatrix (real (args(0).complex_matrix_value ()));
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
489 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
490 sm = SparseMatrix (args(0).matrix_value ());
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
491
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
492 n_row = sm.rows ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
493 n_col = sm.cols ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
494 ridx = sm.xridx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
495 cidx = sm.xcidx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
496 }
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
497
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
498 if (n_row != n_col)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
499 {
11553
01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory.
Rik <octave@nomad.inbox5.com>
parents: 11523
diff changeset
500 error ("csymamd: matrix S must be square");
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
501 return retval;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
502 }
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
503
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
504 // Allocate workspace for symamd
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
505 OCTAVE_LOCAL_BUFFER (octave_idx_type, perm, n_col+1);
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
506 OCTAVE_LOCAL_BUFFER (octave_idx_type, stats, CCOLAMD_STATS);
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
507
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
508 if (nargin > 2)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
509 {
14846
460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists.
Rik <octave@nomad.inbox5.com>
parents: 14844
diff changeset
510 NDArray in_cmember = args(2).array_value ();
460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists.
Rik <octave@nomad.inbox5.com>
parents: 14844
diff changeset
511 octave_idx_type cslen = in_cmember.length ();
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
512 OCTAVE_LOCAL_BUFFER (octave_idx_type, cmember, cslen);
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
513 for (octave_idx_type i = 0; i < cslen; i++)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
514 // convert cmember from 1-based to 0-based
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
515 cmember[i] = static_cast<octave_idx_type>(in_cmember(i) - 1);
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
516
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
517 if (cslen != n_col)
11553
01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory.
Rik <octave@nomad.inbox5.com>
parents: 11523
diff changeset
518 error ("csymamd: CMEMBER must be of length equal to #cols of A");
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
519 else if (!CSYMAMD_NAME () (n_col, ridx, cidx, perm, knobs, stats,
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
520 &calloc, &free, cmember, -1))
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
521 {
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
522 CSYMAMD_NAME (_report) (stats) ;
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
523 error ("csymamd: internal error!") ;
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
524 return retval;
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
525 }
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
526 }
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
527 else
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
528 {
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
529 if (!CSYMAMD_NAME () (n_col, ridx, cidx, perm, knobs, stats,
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
530 &calloc, &free, 0, -1))
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
531 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
532 CSYMAMD_NAME (_report) (stats) ;
11553
01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory.
Rik <octave@nomad.inbox5.com>
parents: 11523
diff changeset
533 error ("csymamd: internal error!") ;
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
534 return retval;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
535 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
536 }
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
537
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
538 // return the permutation vector
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
539 NDArray out_perm (dim_vector (1, n_col));
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
540 for (octave_idx_type i = 0; i < n_col; i++)
14854
5ae9f0f77635 maint: Use Octave coding conventions for coddling parenthis is DLD-FUNCTIONS directory
Rik <octave@nomad.inbox5.com>
parents: 14846
diff changeset
541 out_perm(i) = perm[i] + 1;
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
542
14844
5bc9b9cb4362 maint: Use Octave coding conventions for cuddled parenthesis in retval assignments.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
543 retval(0) = out_perm;
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
544
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
545 // Return the stats vector
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
546 if (nargout == 2)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
547 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
548 NDArray out_stats (dim_vector (1, CCOLAMD_STATS));
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
549 for (octave_idx_type i = 0 ; i < CCOLAMD_STATS ; i++)
15020
560317fd5977 maint: Cuddle open bracket used for indexing C++ arrays in source code.
Rik <rik@octave.org>
parents: 14854
diff changeset
550 out_stats(i) = stats[i] ;
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
551 retval(1) = out_stats;
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
552
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
553 // fix stats (5) and (6), for 1-based information on
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
554 // jumbled matrix. note that this correction doesn't
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
555 // occur if symamd returns FALSE
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
556 out_stats (CCOLAMD_INFO1) ++ ;
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
557 out_stats (CCOLAMD_INFO2) ++ ;
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
558 }
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
559
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
560 // print stats if spumoni > 0
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
561 if (spumoni > 0)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
562 CSYMAMD_NAME (_report) (stats) ;
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
563
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
564 // Return the stats vector
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
565 if (nargout == 2)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
566 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
567 NDArray out_stats (dim_vector (1, CCOLAMD_STATS));
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
568 for (octave_idx_type i = 0 ; i < CCOLAMD_STATS ; i++)
15020
560317fd5977 maint: Cuddle open bracket used for indexing C++ arrays in source code.
Rik <rik@octave.org>
parents: 14854
diff changeset
569 out_stats(i) = stats[i] ;
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
570 retval(1) = out_stats;
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
571
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
572 // fix stats (5) and (6), for 1-based information on
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
573 // jumbled matrix. note that this correction doesn't
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
574 // occur if symamd returns FALSE
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
575 out_stats (CCOLAMD_INFO1) ++ ;
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11553
diff changeset
576 out_stats (CCOLAMD_INFO2) ++ ;
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
577 }
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
578 }
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
579
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
580 #else
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
581
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
582 error ("csymamd: not available in this version of Octave");
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
583
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
584 #endif
5771
9c7be8e14b5b [project @ 2006-04-18 19:17:33 by jwe]
jwe
parents: 5760
diff changeset
585
9c7be8e14b5b [project @ 2006-04-18 19:17:33 by jwe]
jwe
parents: 5760
diff changeset
586 return retval;
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
587 }