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Grammarcheck .cc files
author Rik <octave@nomad.inbox5.com>
date Sat, 31 Jul 2010 11:18:11 -0700
parents 3140cb7a05a1
children a4f482e66b65
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1 /*
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2
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John W. Eaton <jwe@octave.org>
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3 Copyright (C) 2005, 2006, 2007, 2008 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 IDX_TYPE_LONG
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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 degree\n\
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63 permutation vector for the sparse matrix @var{s}. For a non-symmetric matrix\n\
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64 @var{s},\n\
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65 @code{@var{s} (:, @var{p})} tends to have sparser LU factors than @var{s}.\n\
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66 @code{chol (@var{s} (:, @var{p})' * @var{s} (:, @var{p}))} also tends to be\n\
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67 sparser than @code{chol (@var{s}' * @var{s})}.\n\
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68 @code{@var{p} = ccolamd\n\
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69 (@var{s}, 1)} optimizes the ordering for @code{lu (@var{s} (:, @var{p}))}.\n\
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70 The ordering is followed by a column elimination tree post-ordering.\n\
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71 \n\
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72 @var{knobs} is an optional one- to five-element input vector, with a default\n\
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73 value of @code{[0 10 10 1 0]} if not present or empty. Entries not present\n\
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74 are set to their defaults.\n\
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75 \n\
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76 @table @code\n\
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77 @item @var{knobs}(1)\n\
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78 if nonzero, the ordering is optimized for @code{lu (S (:, p))}. It will be a\n\
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79 poor ordering for @code{chol (@var{s} (:, @var{p})' * @var{s} (:,\n\
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80 @var{p}))}. This is the most important knob for ccolamd.\n\
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81 \n\
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82 @item @var{knob}(2)\n\
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83 if @var{s} is m-by-n, rows with more than @code{max (16, @var{knobs} (2) *\n\
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84 sqrt (n))} entries are ignored.\n\
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85 \n\
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86 @item @var{knob}(3)\n\
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87 columns with more than @code{max (16, @var{knobs} (3) * sqrt (min (@var{m},\n\
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88 @var{n})))} entries are ignored and ordered last in the output permutation\n\
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89 (subject to the cmember constraints).\n\
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90 \n\
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91 @item @var{knob}(4)\n\
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92 if nonzero, aggressive absorption is performed.\n\
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93 \n\
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94 @item @var{knob}(5)\n\
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95 if nonzero, statistics and knobs are printed.\n\
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96 \n\
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97 @end table\n\
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98 \n\
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99 @var{cmember} is an optional vector of length n. It defines the constraints\n\
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100 on the column ordering. If @code{@var{cmember} (j) = @var{c}}, then column\n\
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101 @var{j} is in constraint set @var{c} (@var{c} must be in the range 1 to\n\
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102 @var{n}). In the output permutation @var{p}, all columns in set 1 appear\n\
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103 first, followed by all columns in set 2, and so on. @code{@var{cmember} =\n\
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104 ones(1,n)} if not present or empty.\n\
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105 @code{ccolamd (@var{s}, [], 1 : @var{n})} returns @code{1 : @var{n}}\n\
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106 \n\
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107 @code{@var{p} = ccolamd (@var{s})} is about the same as\n\
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108 @code{@var{p} = colamd (@var{s})}. @var{knobs} and its default values differ. \n\
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109 @code{colamd} always does aggressive absorption, and it finds an ordering\n\
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110 suitable for both @code{lu (@var{s} (:, @var{p}))} and @code{chol (@var{S} (:,\n\
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111 @var{p})' * @var{s} (:, @var{p}))}; it cannot optimize its ordering for\n\
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112 @code{lu (@var{s} (:, @var{p}))} to the extent that\n\
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113 @code{ccolamd (@var{s}, 1)} can.\n\
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114 \n\
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115 @var{stats} is an optional 20-element output vector that provides data\n\
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116 about the ordering and the validity of the input matrix @var{s}. Ordering\n\
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117 statistics are in @code{@var{stats} (1 : 3)}. @code{@var{stats} (1)} and\n\
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118 @code{@var{stats} (2)} are the number of dense or empty rows and columns\n\
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119 ignored by @sc{ccolamd} and @code{@var{stats} (3)} is the number of garbage\n\
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120 collections performed on the internal data structure used by @sc{ccolamd}\n\
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121 (roughly of size @code{2.2 * nnz (@var{s}) + 4 * @var{m} + 7 * @var{n}}\n\
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122 integers).\n\
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123 \n\
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124 @code{@var{stats} (4 : 7)} provide information if CCOLAMD was able to\n\
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125 continue. The matrix is OK if @code{@var{stats} (4)} is zero, or 1 if\n\
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126 invalid. @code{@var{stats} (5)} is the rightmost column index that is\n\
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127 unsorted or contains duplicate entries, or zero if no such column exists.\n\
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128 @code{@var{stats} (6)} is the last seen duplicate or out-of-order row\n\
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129 index in the column index given by @code{@var{stats} (5)}, or zero if no\n\
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130 such row index exists. @code{@var{stats} (7)} is the number of duplicate\n\
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131 or out-of-order row indices. @code{@var{stats} (8 : 20)} is always zero in\n\
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132 the current version of @sc{ccolamd} (reserved for future use).\n\
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133 \n\
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134 The authors of the code itself are S. Larimore, T. Davis (Univ. of Florida)\n\
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135 and S. Rajamanickam in collaboration with J. Bilbert and E. Ng. Supported\n\
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136 by the National Science Foundation (DMS-9504974, DMS-9803599, CCR-0203270),\n\
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diff changeset
137 and a grant from Sandia National Lab. See\n\
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diff changeset
138 @url{http://www.cise.ufl.edu/research/sparse} for ccolamd, csymamd, amd,\n\
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diff changeset
139 colamd, symamd, and other related orderings.\n\
5642
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diff changeset
140 @seealso{colamd, csymamd}\n\
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diff changeset
141 @end deftypefn")
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diff changeset
142 {
5771
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diff changeset
143 octave_value_list retval;
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diff changeset
144
5451
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diff changeset
145 #ifdef HAVE_CCOLAMD
5771
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diff changeset
146
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147 int nargin = args.length ();
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diff changeset
148 int spumoni = 0;
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149
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diff changeset
150 if (nargout > 2 || nargin < 1 || nargin > 3)
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diff changeset
151 usage ("ccolamd: incorrect number of input and/or output arguments");
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152 else
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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153 {
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
154 // Get knobs
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diff changeset
155 OCTAVE_LOCAL_BUFFER (double, knobs, CCOLAMD_KNOBS);
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
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diff changeset
156 CCOLAMD_NAME (_set_defaults) (knobs);
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157
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158 // Check for user-passed knobs
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159 if (nargin > 1)
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diff changeset
160 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
161 NDArray User_knobs = args(1).array_value ();
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diff changeset
162 int nel_User_knobs = User_knobs.length ();
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163
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164 if (nel_User_knobs > 0)
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diff changeset
165 knobs [CCOLAMD_LU] = (User_knobs (0) != 0);
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
166 if (nel_User_knobs > 1)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
167 knobs [CCOLAMD_DENSE_ROW] = User_knobs (1);
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
168 if (nel_User_knobs > 2)
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diff changeset
169 knobs [CCOLAMD_DENSE_COL] = User_knobs (2);
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diff changeset
170 if (nel_User_knobs > 3)
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diff changeset
171 knobs [CCOLAMD_AGGRESSIVE] = (User_knobs (3) != 0);
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diff changeset
172 if (nel_User_knobs > 4)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
173 spumoni = (User_knobs (4) != 0);
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174
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175 // print knob settings if spumoni is set
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diff changeset
176 if (spumoni)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
177 {
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diff changeset
178 octave_stdout << "\nccolamd version " << CCOLAMD_MAIN_VERSION << "."
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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179 << CCOLAMD_SUB_VERSION << ", " << CCOLAMD_DATE
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diff changeset
180 << ":\nknobs(1): " << User_knobs (0) << ", order for ";
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diff changeset
181 if ( knobs [CCOLAMD_LU] != 0)
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diff changeset
182 octave_stdout << "lu(A)\n";
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diff changeset
183 else
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184 octave_stdout << "chol(A'*A)\n";
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diff changeset
185
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diff changeset
186 if (knobs [CCOLAMD_DENSE_ROW] >= 0)
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diff changeset
187 octave_stdout << "knobs(2): " << User_knobs (1)
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diff changeset
188 << ", rows with > max(16,"
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
189 << knobs [CCOLAMD_DENSE_ROW] << "*sqrt(size(A,2)))"
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
190 << " entries removed\n";
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
191 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
192 octave_stdout << "knobs(2): " << User_knobs (1)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
193 << ", no dense rows removed\n";
5451
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diff changeset
194
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diff changeset
195 if (knobs [CCOLAMD_DENSE_COL] >= 0)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
196 octave_stdout << "knobs(3): " << User_knobs (2)
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diff changeset
197 << ", cols with > max(16,"
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diff changeset
198 << knobs [CCOLAMD_DENSE_COL] << "*sqrt(size(A)))"
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
199 << " entries removed\n";
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
200 else
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diff changeset
201 octave_stdout << "knobs(3): " << User_knobs (2)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
202 << ", no dense columns removed\n";
5451
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diff changeset
203
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
204 if (knobs [CCOLAMD_AGGRESSIVE] != 0)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
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diff changeset
205 octave_stdout << "knobs(4): " << User_knobs(3)
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diff changeset
206 << ", aggressive absorption: yes";
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diff changeset
207 else
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diff changeset
208 octave_stdout << "knobs(4): " << User_knobs(3)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
209 << ", aggressive absorption: no";
5451
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diff changeset
210
10154
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diff changeset
211 octave_stdout << "knobs(5): " << User_knobs (4)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
212 << ", statistics and knobs printed\n";
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
213 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
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diff changeset
214 }
5451
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diff changeset
215
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
216 octave_idx_type n_row, n_col, nnz;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
217 octave_idx_type *ridx, *cidx;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
218 SparseComplexMatrix scm;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
219 SparseMatrix sm;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
220
5631
7171d19706df [project @ 2006-02-22 20:15:06 by dbateman]
dbateman
parents: 5604
diff changeset
221 if (args(0).is_sparse_type ())
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
222 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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parents: 9064
diff changeset
223 if (args(0).is_complex_type ())
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
224 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
225 scm = args(0). sparse_complex_matrix_value ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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parents: 9064
diff changeset
226 n_row = scm.rows ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
227 n_col = scm.cols ();
10527
b4d2080b6df7 Replace nzmax by nnz as needed
David Bateman <dbateman@free.fr>
parents: 10282
diff changeset
228 nnz = scm.nnz ();
10154
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diff changeset
229 ridx = scm.xridx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
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diff changeset
230 cidx = scm.xcidx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
231 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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parents: 9064
diff changeset
232 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
233 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
234 sm = args(0).sparse_matrix_value ();
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diff changeset
235
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diff changeset
236 n_row = sm.rows ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
237 n_col = sm.cols ();
10527
b4d2080b6df7 Replace nzmax by nnz as needed
David Bateman <dbateman@free.fr>
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diff changeset
238 nnz = sm.nnz ();
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
239 ridx = sm.xridx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
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diff changeset
240 cidx = sm.xcidx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
241 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
242 }
5451
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diff changeset
243 else
10154
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diff changeset
244 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
245 if (args(0).is_complex_type ())
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diff changeset
246 sm = SparseMatrix (real (args(0).complex_matrix_value ()));
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
247 else
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diff changeset
248 sm = SparseMatrix (args(0).matrix_value ());
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diff changeset
249
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diff changeset
250 n_row = sm.rows ();
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diff changeset
251 n_col = sm.cols ();
10527
b4d2080b6df7 Replace nzmax by nnz as needed
David Bateman <dbateman@free.fr>
parents: 10282
diff changeset
252 nnz = sm.nnz ();
10154
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diff changeset
253 ridx = sm.xridx ();
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diff changeset
254 cidx = sm.xcidx ();
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diff changeset
255 }
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256
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
257 // Allocate workspace for ccolamd
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
258 OCTAVE_LOCAL_BUFFER (octave_idx_type, p, n_col+1);
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
259 for (octave_idx_type i = 0; i < n_col+1; i++)
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diff changeset
260 p[i] = cidx [i];
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diff changeset
261
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
262 octave_idx_type Alen = CCOLAMD_NAME (_recommended) (nnz, n_row, n_col);
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
263 OCTAVE_LOCAL_BUFFER (octave_idx_type, A, Alen);
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
264 for (octave_idx_type i = 0; i < nnz; i++)
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diff changeset
265 A[i] = ridx [i];
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diff changeset
266
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
267 OCTAVE_LOCAL_BUFFER (octave_idx_type, stats, CCOLAMD_STATS);
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diff changeset
268
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
269 if (nargin > 2)
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diff changeset
270 {
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diff changeset
271 NDArray in_cmember = args(2).array_value();
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diff changeset
272 octave_idx_type cslen = in_cmember.length();
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parents: 9064
diff changeset
273 OCTAVE_LOCAL_BUFFER (octave_idx_type, cmember, cslen);
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diff changeset
274 for (octave_idx_type i = 0; i < cslen; i++)
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diff changeset
275 // convert cmember from 1-based to 0-based
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diff changeset
276 cmember[i] = static_cast<octave_idx_type>(in_cmember(i) - 1);
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diff changeset
277
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diff changeset
278 if (cslen != n_col)
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diff changeset
279 error ("ccolamd: cmember must be of length equal to #cols of A");
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diff changeset
280 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
281 // Order the columns (destroys A)
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diff changeset
282 if (! CCOLAMD_NAME () (n_row, n_col, Alen, A, p, knobs, stats, cmember))
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diff changeset
283 {
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diff changeset
284 CCOLAMD_NAME (_report) (stats) ;
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diff changeset
285 error ("ccolamd: internal error!");
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
286 return retval;
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diff changeset
287 }
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diff changeset
288 }
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289 else
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290 {
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diff changeset
291 // Order the columns (destroys A)
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diff changeset
292 if (! CCOLAMD_NAME () (n_row, n_col, Alen, A, p, knobs, stats, 0))
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293 {
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diff changeset
294 CCOLAMD_NAME (_report) (stats) ;
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295 error ("ccolamd: internal error!");
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
296 return retval;
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297 }
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298 }
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299
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300 // return the permutation vector
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301 NDArray out_perm (dim_vector (1, n_col));
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302 for (octave_idx_type i = 0; i < n_col; i++)
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303 out_perm(i) = p [i] + 1;
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304
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305 retval (0) = out_perm;
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306
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307 // print stats if spumoni > 0
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308 if (spumoni > 0)
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309 CCOLAMD_NAME (_report) (stats) ;
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310
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311 // Return the stats vector
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312 if (nargout == 2)
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313 {
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314 NDArray out_stats (dim_vector (1, CCOLAMD_STATS));
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315 for (octave_idx_type i = 0 ; i < CCOLAMD_STATS ; i++)
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316 out_stats (i) = stats [i] ;
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317 retval(1) = out_stats;
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diff changeset
318
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319 // fix stats (5) and (6), for 1-based information on
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diff changeset
320 // jumbled matrix. note that this correction doesn't
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321 // occur if symamd returns FALSE
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322 out_stats (CCOLAMD_INFO1) ++ ;
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diff changeset
323 out_stats (CCOLAMD_INFO2) ++ ;
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diff changeset
324 }
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325 }
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diff changeset
326
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diff changeset
327 #else
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diff changeset
328
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diff changeset
329 error ("ccolamd: not available in this version of Octave");
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diff changeset
330
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331 #endif
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diff changeset
332
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333 return retval;
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diff changeset
334 }
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diff changeset
335
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diff changeset
336 DEFUN_DLD (csymamd, args, nargout,
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diff changeset
337 "-*- texinfo -*-\n\
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diff changeset
338 @deftypefn {Loadable Function} {@var{p} =} csymamd (@var{s})\n\
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339 @deftypefnx {Loadable Function} {@var{p} =} csymamd (@var{s}, @var{knobs})\n\
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diff changeset
340 @deftypefnx {Loadable Function} {@var{p} =} csymamd (@var{s}, @var{knobs}, @var{cmember})\n\
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341 @deftypefnx {Loadable Function} {[@var{p}, @var{stats}] =} csymamd (@dots{})\n\
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342 \n\
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diff changeset
343 For a symmetric positive definite matrix @var{s}, returns the permutation\n\
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diff changeset
344 vector @var{p} such that @code{@var{s}(@var{p},@var{p})} tends to have a\n\
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diff changeset
345 sparser Cholesky factor than @var{s}. Sometimes @code{csymamd} works well\n\
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diff changeset
346 for symmetric indefinite matrices too. The matrix @var{s} is assumed to\n\
5451
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diff changeset
347 be symmetric; only the strictly lower triangular part is referenced.\n\
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diff changeset
348 @var{s} must be square. The ordering is followed by an elimination tree\n\
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diff changeset
349 post-ordering.\n\
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350 \n\
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351 @var{knobs} is an optional one- to three-element input vector, with a\n\
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352 default value of @code{[10 1 0]} if present or empty. Entries not\n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
353 present are set to their defaults.\n\
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354 \n\
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diff changeset
355 @table @code\n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
356 @item @var{knobs}(1)\n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
357 If @var{s} is n-by-n, then rows and columns with more than\n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
358 @code{max(16,@var{knobs}(1)*sqrt(n))} entries are ignored, and ordered\n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
359 last in the output permutation (subject to the cmember constraints).\n\
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diff changeset
360 \n\
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jwe
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diff changeset
361 @item @var{knobs}(2)\n\
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jwe
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diff changeset
362 If nonzero, aggressive absorption is performed.\n\
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diff changeset
363 \n\
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diff changeset
364 @item @var{knobs}(3)\n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
365 If nonzero, statistics and knobs are printed.\n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
366 \n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
367 @end table\n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
368 \n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
369 @var{cmember} is an optional vector of length n. It defines the constraints\n\
9064
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diff changeset
370 on the ordering. If @code{@var{cmember}(j) = @var{s}}, then row/column j is\n\
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parents: 8920
diff changeset
371 in constraint set @var{c} (@var{c} must be in the range 1 to n). In the\n\
5451
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diff changeset
372 output permutation @var{p}, rows/columns in set 1 appear first, followed\n\
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diff changeset
373 by all rows/columns in set 2, and so on. @code{@var{cmember} = ones(1,n)}\n\
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diff changeset
374 if not present or empty. @code{csymamd(@var{s},[],1:n)} returns @code{1:n}.\n\
5451
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diff changeset
375 \n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
376 @code{@var{p} = csymamd(@var{s})} is about the same as @code{@var{p} =\n\
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diff changeset
377 symamd(@var{s})}. @var{knobs} and its default values differ.\n\
5451
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diff changeset
378 \n\
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diff changeset
379 @code{@var{stats} (4:7)} provide information if CCOLAMD was able to\n\
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diff changeset
380 continue. The matrix is OK if @code{@var{stats} (4)} is zero, or 1 if\n\
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diff changeset
381 invalid. @code{@var{stats} (5)} is the rightmost column index that is\n\
5451
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diff changeset
382 unsorted or contains duplicate entries, or zero if no such column exists.\n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
383 @code{@var{stats} (6)} is the last seen duplicate or out-of-order row\n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
384 index in the column index given by @code{@var{stats} (5)}, or zero if no\n\
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diff changeset
385 such row index exists. @code{@var{stats} (7)} is the number of duplicate\n\
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parents: 8920
diff changeset
386 or out-of-order row indices. @code{@var{stats} (8:20)} is always zero in\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10791
diff changeset
387 the current version of @sc{ccolamd} (reserved for future use).\n\
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
388 \n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
389 The authors of the code itself are S. Larimore, T. Davis (Uni of Florida)\n\
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diff changeset
390 and S. Rajamanickam in collaboration with J. Bilbert and E. Ng. Supported\n\
5451
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diff changeset
391 by the National Science Foundation (DMS-9504974, DMS-9803599, CCR-0203270),\n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
392 and a grant from Sandia National Lab. See\n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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parents:
diff changeset
393 @url{http://www.cise.ufl.edu/research/sparse} for ccolamd, csymamd, amd,\n\
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
394 colamd, symamd, and other related orderings.\n\
5642
2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe]
jwe
parents: 5631
diff changeset
395 @seealso{symamd, ccolamd}\n\
2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe]
jwe
parents: 5631
diff changeset
396 @end deftypefn")
5451
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diff changeset
397 {
5771
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diff changeset
398 octave_value_list retval;
9c7be8e14b5b [project @ 2006-04-18 19:17:33 by jwe]
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parents: 5760
diff changeset
399
5451
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diff changeset
400 #if HAVE_CCOLAMD
5771
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diff changeset
401
5451
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diff changeset
402 int nargin = args.length ();
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
403 int spumoni = 0;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
404
10282
c9780d8e228c fix invalid checks in amd functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10155
diff changeset
405 if (nargout > 2 || nargin < 1 || nargin > 3)
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
406 usage ("ccolamd: incorrect number of input and/or output arguments");
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
407 else
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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parents:
diff changeset
408 {
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
409 // Get knobs
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
410 OCTAVE_LOCAL_BUFFER (double, knobs, CCOLAMD_KNOBS);
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
411 CCOLAMD_NAME (_set_defaults) (knobs);
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
412
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
413 // Check for user-passed knobs
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
414 if (nargin > 1)
10154
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parents: 9064
diff changeset
415 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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parents: 9064
diff changeset
416 NDArray User_knobs = args(1).array_value ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
417 int nel_User_knobs = User_knobs.length ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
418
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
419 if (nel_User_knobs > 0)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
420 knobs [CCOLAMD_DENSE_ROW] = User_knobs (0);
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
421 if (nel_User_knobs > 0)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
422 knobs [CCOLAMD_AGGRESSIVE] = User_knobs (1);
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
423 if (nel_User_knobs > 1)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
424 spumoni = static_cast<int> (User_knobs (2));
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
425
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
426 // print knob settings if spumoni is set
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
427 if (spumoni)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
428 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
429 octave_stdout << "\ncsymamd version " << CCOLAMD_MAIN_VERSION << "."
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
430 << CCOLAMD_SUB_VERSION << ", " << CCOLAMD_DATE << "\n";
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
431
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
432 if (knobs [CCOLAMD_DENSE_ROW] >= 0)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
433 octave_stdout << "knobs(1): " << User_knobs (0)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
434 << ", rows/cols with > max(16,"
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
435 << knobs [CCOLAMD_DENSE_ROW] << "*sqrt(size(A,2)))"
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
436 << " entries removed\n";
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
437 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
438 octave_stdout << "knobs(1): " << User_knobs (0)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
439 << ", no dense rows/cols removed\n";
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
440
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
441 if (knobs [CCOLAMD_AGGRESSIVE] != 0)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
442 octave_stdout << "knobs(2): " << User_knobs(1)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
443 << ", aggressive absorption: yes";
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
444 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
445 octave_stdout << "knobs(2): " << User_knobs(1)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
446 << ", aggressive absorption: no";
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
447
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
448
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
449 octave_stdout << "knobs(3): " << User_knobs (2)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
450 << ", statistics and knobs printed\n";
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
451 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
452 }
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
453
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
454 octave_idx_type n_row, n_col, nnz;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
455 octave_idx_type *ridx, *cidx;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
456 SparseMatrix sm;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
457 SparseComplexMatrix scm;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
458
5631
7171d19706df [project @ 2006-02-22 20:15:06 by dbateman]
dbateman
parents: 5604
diff changeset
459 if (args(0).is_sparse_type ())
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
460 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
461 if (args(0).is_complex_type ())
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
462 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
463 scm = args(0).sparse_complex_matrix_value ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
464 n_row = scm.rows ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
465 n_col = scm.cols ();
10527
b4d2080b6df7 Replace nzmax by nnz as needed
David Bateman <dbateman@free.fr>
parents: 10282
diff changeset
466 nnz = scm.nnz ();
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
467 ridx = scm.xridx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
468 cidx = scm.xcidx ();
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 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
471 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
472 sm = args(0).sparse_matrix_value ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
473 n_row = sm.rows ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
474 n_col = sm.cols ();
10527
b4d2080b6df7 Replace nzmax by nnz as needed
David Bateman <dbateman@free.fr>
parents: 10282
diff changeset
475 nnz = sm.nnz ();
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
476 ridx = sm.xridx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
477 cidx = sm.xcidx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
478 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
479 }
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
480 else
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
481 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
482 if (args(0).is_complex_type ())
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
483 sm = SparseMatrix (real (args(0).complex_matrix_value ()));
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
484 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
485 sm = SparseMatrix (args(0).matrix_value ());
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 n_row = sm.rows ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
488 n_col = sm.cols ();
10527
b4d2080b6df7 Replace nzmax by nnz as needed
David Bateman <dbateman@free.fr>
parents: 10282
diff changeset
489 nnz = sm.nnz ();
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
490 ridx = sm.xridx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
491 cidx = sm.xcidx ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
492 }
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
493
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
494 if (n_row != n_col)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
495 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
496 error ("symamd: matrix must be square");
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
497 return retval;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
498 }
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
499
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
500 // Allocate workspace for symamd
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
501 OCTAVE_LOCAL_BUFFER (octave_idx_type, perm, n_col+1);
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
502 OCTAVE_LOCAL_BUFFER (octave_idx_type, stats, CCOLAMD_STATS);
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 if (nargin > 2)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
505 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
506 NDArray in_cmember = args(2).array_value();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
507 octave_idx_type cslen = in_cmember.length();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
508 OCTAVE_LOCAL_BUFFER (octave_idx_type, cmember, cslen);
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
509 for (octave_idx_type i = 0; i < cslen; i++)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
510 // convert cmember from 1-based to 0-based
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
511 cmember[i] = static_cast<octave_idx_type>(in_cmember(i) - 1);
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
512
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
513 if (cslen != n_col)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
514 error ("ccolamd: cmember must be of length equal to #cols of A");
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
515 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
516 if (!CSYMAMD_NAME () (n_col, ridx, cidx, perm, knobs, stats,
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
517 &calloc, &free, cmember, -1))
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
518 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
519 CSYMAMD_NAME (_report) (stats) ;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
520 error ("symamd: internal error!") ;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
521 return retval;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
522 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
523 }
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
524 else
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
525 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
526 if (!CSYMAMD_NAME () (n_col, ridx, cidx, perm, knobs, stats,
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
527 &calloc, &free, 0, -1))
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
528 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
529 CSYMAMD_NAME (_report) (stats) ;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
530 error ("symamd: internal error!") ;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
531 return retval;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
532 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
533 }
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
534
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
535 // return the permutation vector
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
536 NDArray out_perm (dim_vector (1, n_col));
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
537 for (octave_idx_type i = 0; i < n_col; i++)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
538 out_perm(i) = perm [i] + 1;
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
539
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
540 retval (0) = out_perm;
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
541
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
542 // Return the stats vector
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
543 if (nargout == 2)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
544 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
545 NDArray out_stats (dim_vector (1, CCOLAMD_STATS));
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
546 for (octave_idx_type i = 0 ; i < CCOLAMD_STATS ; i++)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
547 out_stats (i) = stats [i] ;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
548 retval(1) = out_stats;
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
549
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
550 // fix stats (5) and (6), for 1-based information on
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
551 // jumbled matrix. note that this correction doesn't
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
552 // occur if symamd returns FALSE
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
553 out_stats (CCOLAMD_INFO1) ++ ;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
554 out_stats (CCOLAMD_INFO2) ++ ;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9064
diff changeset
555 }
5451
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
556
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
jwe
parents:
diff changeset
557 // print stats if spumoni > 0
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558 if (spumoni > 0)
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diff changeset
559 CSYMAMD_NAME (_report) (stats) ;
5451
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560
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diff changeset
561 // Return the stats vector
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562 if (nargout == 2)
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40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
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563 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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parents: 9064
diff changeset
564 NDArray out_stats (dim_vector (1, CCOLAMD_STATS));
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
565 for (octave_idx_type i = 0 ; i < CCOLAMD_STATS ; i++)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
566 out_stats (i) = stats [i] ;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
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diff changeset
567 retval(1) = out_stats;
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diff changeset
568
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40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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diff changeset
569 // fix stats (5) and (6), for 1-based information on
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
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diff changeset
570 // jumbled matrix. note that this correction doesn't
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
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parents: 9064
diff changeset
571 // occur if symamd returns FALSE
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John W. Eaton <jwe@octave.org>
parents: 9064
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572 out_stats (CCOLAMD_INFO1) ++ ;
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573 out_stats (CCOLAMD_INFO2) ++ ;
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diff changeset
574 }
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575 }
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576
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577 #else
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diff changeset
578
ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe]
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diff changeset
579 error ("csymamd: not available in this version of Octave");
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diff changeset
580
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diff changeset
581 #endif
5771
9c7be8e14b5b [project @ 2006-04-18 19:17:33 by jwe]
jwe
parents: 5760
diff changeset
582
9c7be8e14b5b [project @ 2006-04-18 19:17:33 by jwe]
jwe
parents: 5760
diff changeset
583 return retval;
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diff changeset
584 }