Mercurial > octave
annotate libinterp/corefcn/amd.cc @ 28024:c28b8ba841fb
move sparse functions from dldfcn to corefcn directory (bug #57459)
Octave is always linked with SuiteSparse libraries to support
functions in liboctave so there is no advantage to dynamically load
the interpreter DEFUN functions that depend on SuiteSparse.
* __eigs__.cc, amd.cc, ccolamd.cc, chol.cc, colamd.cc, dmperm.cc,
qr.cc, symbfact.cc, symrcm.cc: Move from dldfcn to corefcn directory.
Define functions with DEFUN or DEFMETHOD instead of DEFUN_DLD or
DEFMETHOD_DLD.
* libinterp/dldfcn/module-files, libinterp/corefcn/module.mk: Update.
* amd.cc (Famd): Don't mlock function.
* symbfact.cc (Fsymbfact): Don't mlock function.
* variables.cc, type.m, which.m: Update tests.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 29 Jan 2020 06:30:40 -0500 |
parents | libinterp/dldfcn/amd.cc@bd51beb6205e |
children | 0a5b15007766 |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 2008-2020 The Octave Project Developers |
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4 // |
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5 // See the file COPYRIGHT.md in the top-level directory of this |
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6 // distribution or <https://octave.org/copyright/>. |
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7 // |
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8 // This file is part of Octave. |
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9 // |
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10 // Octave is free software: you can redistribute it and/or modify it |
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11 // under the terms of the GNU General Public License as published by |
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12 // the Free Software Foundation, either version 3 of the License, or |
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13 // (at your option) any later version. |
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14 // |
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15 // Octave is distributed in the hope that it will be useful, but |
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 // GNU General Public License for more details. |
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19 // |
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20 // You should have received a copy of the GNU General Public License |
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21 // along with Octave; see the file COPYING. If not, see |
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22 // <https://www.gnu.org/licenses/>. |
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23 // |
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24 //////////////////////////////////////////////////////////////////////// |
7619 | 25 |
26 // This is the octave interface to amd, which bore the copyright given | |
27 // in the help of the functions. | |
28 | |
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29 #if defined (HAVE_CONFIG_H) |
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30 # include "config.h" |
7619 | 31 #endif |
32 | |
33 #include <cstdlib> | |
34 | |
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35 #include "CSparse.h" |
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36 #include "Sparse.h" |
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37 #include "dMatrix.h" |
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38 #include "oct-locbuf.h" |
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39 #include "oct-sparse.h" |
7619 | 40 |
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41 #include "defun.h" |
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42 #include "error.h" |
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43 #include "errwarn.h" |
7619 | 44 #include "oct-map.h" |
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45 #include "ov.h" |
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46 #include "ovl.h" |
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47 #include "parse.h" |
7619 | 48 |
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49 DEFUN (amd, args, nargout, |
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50 doc: /* -*- texinfo -*- |
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51 @deftypefn {} {@var{p} =} amd (@var{S}) |
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52 @deftypefnx {} {@var{p} =} amd (@var{S}, @var{opts}) |
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53 |
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54 Return the approximate minimum degree permutation of a matrix. |
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55 |
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56 This is a permutation such that the Cholesky@tie{}factorization of |
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57 @code{@var{S} (@var{p}, @var{p})} tends to be sparser than the |
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58 Cholesky@tie{}factorization of @var{S} itself. @code{amd} is typically |
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59 faster than @code{symamd} but serves a similar purpose. |
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60 |
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61 The optional parameter @var{opts} is a structure that controls the behavior |
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62 of @code{amd}. The fields of the structure are |
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63 |
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64 @table @asis |
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65 @item @var{opts}.dense |
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66 Determines what @code{amd} considers to be a dense row or column of the |
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67 input matrix. Rows or columns with more than @code{max (16, (dense * |
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68 sqrt (@var{n})))} entries, where @var{n} is the order of the matrix @var{S}, |
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69 are ignored by @code{amd} during the calculation of the permutation. |
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70 The value of dense must be a positive scalar and the default value is 10.0 |
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71 |
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72 @item @var{opts}.aggressive |
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73 If this value is a nonzero scalar, then @code{amd} performs aggressive |
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74 absorption. The default is not to perform aggressive absorption. |
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75 @end table |
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76 |
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77 The author of the code itself is Timothy A. Davis |
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78 (see @url{http://faculty.cse.tamu.edu/davis/suitesparse.html}). |
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79 @seealso{symamd, colamd} |
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80 @end deftypefn */) |
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82 #if defined (HAVE_AMD) |
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83 |
7619 | 84 int nargin = args.length (); |
85 | |
86 if (nargin < 1 || nargin > 2) | |
87 print_usage (); | |
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88 |
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89 octave_idx_type n_row, n_col; |
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90 const octave::suitesparse_integer *ridx, *cidx; |
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91 SparseMatrix sm; |
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92 SparseComplexMatrix scm; |
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93 |
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94 if (args(0).issparse ()) |
7619 | 95 { |
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96 if (args(0).iscomplex ()) |
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97 { |
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98 scm = args(0).sparse_complex_matrix_value (); |
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99 n_row = scm.rows (); |
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100 n_col = scm.cols (); |
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101 ridx = octave::to_suitesparse_intptr (scm.xridx ()); |
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102 cidx = octave::to_suitesparse_intptr (scm.xcidx ()); |
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103 } |
7619 | 104 else |
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105 { |
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106 sm = args(0).sparse_matrix_value (); |
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107 n_row = sm.rows (); |
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108 n_col = sm.cols (); |
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109 ridx = octave::to_suitesparse_intptr (sm.xridx ()); |
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110 cidx = octave::to_suitesparse_intptr (sm.xcidx ()); |
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111 } |
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112 } |
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113 else |
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114 { |
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115 if (args(0).iscomplex ()) |
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116 sm = SparseMatrix (real (args(0).complex_matrix_value ())); |
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117 else |
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118 sm = SparseMatrix (args(0).matrix_value ()); |
7619 | 119 |
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120 n_row = sm.rows (); |
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121 n_col = sm.cols (); |
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122 ridx = octave::to_suitesparse_intptr (sm.xridx ()); |
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123 cidx = octave::to_suitesparse_intptr (sm.xcidx ()); |
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124 } |
7619 | 125 |
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126 if (n_row != n_col) |
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127 err_square_matrix_required ("amd", "S"); |
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128 |
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129 OCTAVE_LOCAL_BUFFER (double, Control, AMD_CONTROL); |
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130 AMD_NAME (_defaults) (Control); |
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131 if (nargin > 1) |
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132 { |
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133 octave_scalar_map arg1 = args(1).xscalar_map_value ("amd: OPTS argument must be a scalar structure"); |
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134 |
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135 octave_value tmp; |
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137 tmp = arg1.getfield ("dense"); |
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138 if (tmp.is_defined ()) |
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139 Control[AMD_DENSE] = tmp.double_value (); |
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141 tmp = arg1.getfield ("aggressive"); |
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142 if (tmp.is_defined ()) |
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143 Control[AMD_AGGRESSIVE] = tmp.double_value (); |
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144 } |
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146 OCTAVE_LOCAL_BUFFER (octave::suitesparse_integer, P, n_col); |
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147 Matrix xinfo (AMD_INFO, 1); |
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148 double *Info = xinfo.fortran_vec (); |
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149 |
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150 // FIXME: how can we manage the memory allocation of amd |
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151 // in a cleaner manner? |
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152 SUITESPARSE_ASSIGN_FPTR (malloc_func, amd_malloc, malloc); |
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153 SUITESPARSE_ASSIGN_FPTR (free_func, amd_free, free); |
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154 SUITESPARSE_ASSIGN_FPTR (calloc_func, amd_calloc, calloc); |
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155 SUITESPARSE_ASSIGN_FPTR (realloc_func, amd_realloc, realloc); |
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156 SUITESPARSE_ASSIGN_FPTR (printf_func, amd_printf, printf); |
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158 octave_idx_type result = AMD_NAME (_order) (n_col, cidx, ridx, P, Control, |
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159 Info); |
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160 |
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161 if (result == AMD_OUT_OF_MEMORY) |
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162 error ("amd: out of memory"); |
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163 else if (result == AMD_INVALID) |
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164 error ("amd: matrix S is corrupted"); |
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166 Matrix Pout (1, n_col); |
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167 for (octave_idx_type i = 0; i < n_col; i++) |
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168 Pout.xelem (i) = P[i] + 1; |
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169 |
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170 if (nargout > 1) |
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171 return ovl (Pout, xinfo); |
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172 else |
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173 return ovl (Pout); |
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174 |
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176 |
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177 octave_unused_parameter (args); |
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178 octave_unused_parameter (nargout); |
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179 |
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180 err_disabled_feature ("amd", "AMD"); |
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181 |
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183 } | |
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184 |
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185 /* |
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186 %!shared A, A2, opts |
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187 %! A = ones (20, 30); |
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188 %! A2 = ones (30, 30); |
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189 |
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190 %!testif HAVE_AMD |
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191 %! assert(amd (A2), [1:30]); |
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192 %! opts.dense = 25; |
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193 %! assert(amd (A2, opts), [1:30]); |
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194 %! opts.aggressive = 1; |
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195 %! assert(amd (A2, opts), [1:30]); |
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196 |
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197 %!testif HAVE_AMD |
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198 %! assert (amd ([]), zeros (1,0)) |
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199 |
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200 %!error <S must be a square matrix|was unavailable or disabled> amd (A) |
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201 %!error amd (A2, 2) |
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202 */ |