Mercurial > octave
annotate libinterp/corefcn/__ichol__.cc @ 29961:7d6709900da7
eliminate octave:: namespace tags in DEFUN and DEFMETHOD and more
Files affected: __betainc__.cc, __contourc__.cc, __eigs__.cc,
__expint__.cc, __ftp__.cc, __gammainc__.cc, __ichol__.cc, __ilu__.cc,
__magick_read__.cc, __pchip_deriv__.cc, __qp__.cc, amd.cc, balance.cc,
besselj.cc, bsxfun.cc, call-stack.cc, ccolamd.cc, cellfun.cc, chol.cc,
colamd.cc, colloc.cc, conv2.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc,
defaults.cc, dirfns.cc, display.cc, dlmread.cc, dmperm.cc, dot.cc,
eig.cc, ellipj.cc, environment.cc, error.cc, event-manager.cc, fft.cc,
fft2.cc, fftn.cc, file-io.cc, find.cc, gcd.cc, getgrent.cc,
getpwent.cc, getrusage.cc, gsvd.cc, hash.cc, help.cc, hess.cc,
hex2num.cc, input.cc, inv.cc, jsondecode.cc, jsonencode.cc,
load-path.cc, load-save.cc, lookup.cc, lsode.cc, lu.cc, max.cc,
mgorth.cc, oct-hist.cc, ordqz.cc, ordschur.cc, pager.cc, pr-output.cc,
psi.cc, qr.cc, quad.cc, quadcc.cc, qz.cc, rand.cc, regexp.cc,
schur.cc, settings.cc, sighandlers.cc, sparse.cc, spparms.cc,
sqrtm.cc, stream-euler.cc, strfind.cc, strfns.cc, sub2ind.cc, svd.cc,
symbfact.cc, symtab.cc, syscalls.cc, sysdep.cc, time.cc, toplev.cc,
tril.cc, typecast.cc, urlwrite.cc, utils.cc, variables.cc,
__delaunayn__.cc, __fltk_uigetfile__.cc, __glpk__.cc,
__init_gnuplot__.cc, __ode15__.cc, __voronoi__.cc, audiodevinfo.cc,
audioread.cc, convhulln.cc, fftw.cc, gzip.cc, ov-cell.cc, ov-class.cc,
ov-classdef.cc, ov-fcn-handle.cc, ov-struct.cc, ov-typeinfo.cc,
ov-usr-fcn.cc, octave.cc, lex.ll, oct-parse.yy, profiler.cc,
andpt-eval.cc.
author | John W. Eaton <jwe@octave.org> |
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date | Sat, 14 Aug 2021 22:48:52 -0400 |
parents | 32c3a5805893 |
children | a61e1a0f6024 |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 2013-2021 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 //////////////////////////////////////////////////////////////////////// |
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25 |
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26 #if defined (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 "oct-locbuf.h" |
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31 #include "oct-norm.h" |
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32 |
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33 #include "defun.h" |
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34 #include "error.h" |
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35 |
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36 #include "builtin-defun-decls.h" |
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37 |
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38 OCTAVE_NAMESPACE_BEGIN |
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39 |
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40 // Secondary functions for complex and real case used in ichol algorithms. |
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41 Complex ichol_mult_complex (Complex a, Complex b) |
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42 { |
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43 #if defined (HAVE_CXX_COMPLEX_SETTERS) |
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44 b.imag (-b.imag ()); |
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45 #elif defined (HAVE_CXX_COMPLEX_REFERENCE_ACCESSORS) |
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46 b.imag () = -b.imag (); |
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47 #else |
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48 b = b.conj (); |
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49 #endif |
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50 return a * b; |
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51 } |
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52 |
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53 double ichol_mult_real (double a, double b) |
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54 { |
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55 return a * b; |
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56 } |
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57 |
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58 bool ichol_checkpivot_complex (Complex pivot) |
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59 { |
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60 if (pivot.imag () != 0) |
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61 error ("ichol: non-real pivot encountered. The matrix must be Hermitian."); |
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62 else if (pivot.real () < 0) |
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63 error ("ichol: negative pivot encountered"); |
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64 |
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65 return true; |
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66 } |
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67 |
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68 bool ichol_checkpivot_real (double pivot) |
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69 { |
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70 if (pivot < 0) |
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71 error ("ichol: negative pivot encountered"); |
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72 |
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73 return true; |
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74 } |
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75 |
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76 template <typename octave_matrix_t, typename T, T (*ichol_mult) (T, T), |
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77 bool (*ichol_checkpivot) (T)> |
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78 void ichol_0 (octave_matrix_t& sm, const std::string michol = "off") |
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79 { |
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80 const octave_idx_type n = sm.cols (); |
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81 octave_idx_type j1, jend, j2, jrow, jjrow, j, jw, i, k, jj, r; |
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82 T tl; |
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83 |
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84 char opt; |
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85 enum {OFF, ON}; |
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86 if (michol == "on") |
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87 opt = ON; |
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88 else |
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89 opt = OFF; |
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90 |
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Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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parents:
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|
91 // Input matrix pointers |
23449
c763214a8260
maint: Use convention 'int *x' for naming pointers.
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parents:
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92 octave_idx_type *cidx = sm.cidx (); |
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93 octave_idx_type *ridx = sm.ridx (); |
19054
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|
94 T* data = sm.data (); |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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parents:
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changeset
|
95 |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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parents:
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96 // Working arrays |
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97 OCTAVE_LOCAL_BUFFER (octave_idx_type, Lfirst, n); |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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98 OCTAVE_LOCAL_BUFFER (octave_idx_type, Llist, n); |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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99 OCTAVE_LOCAL_BUFFER (octave_idx_type, iw, n); |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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100 OCTAVE_LOCAL_BUFFER (T, dropsums, n); |
df64071e538c
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101 |
df64071e538c
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102 // Initialize working arrays |
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103 for (i = 0; i < n; i++) |
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104 { |
df64071e538c
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105 iw[i] = -1; |
df64071e538c
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106 Llist[i] = -1; |
df64071e538c
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107 Lfirst[i] = -1; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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108 dropsums[i] = 0; |
df64071e538c
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109 } |
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110 |
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111 // Loop over all columns |
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112 for (k = 0; k < n; k++) |
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113 { |
df64071e538c
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114 j1 = cidx[k]; |
df64071e538c
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115 j2 = cidx[k+1]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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116 for (j = j1; j < j2; j++) |
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117 iw[ridx[j]] = j; |
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118 |
21419
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119 jrow = Llist[k]; |
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120 // Iterate over each non-zero element in the actual row. |
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121 while (jrow != -1) |
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122 { |
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123 jjrow = Lfirst[jrow]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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124 jend = cidx[jrow+1]; |
df64071e538c
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125 for (jj = jjrow; jj < jend; jj++) |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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126 { |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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127 r = ridx[jj]; |
df64071e538c
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128 jw = iw[r]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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129 tl = ichol_mult (data[jj], data[jjrow]); |
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130 if (jw != -1) |
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131 data[jw] -= tl; |
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132 else |
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133 // Because of the symmetry of the matrix, we know |
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134 // the drops in the column r are also in the column k. |
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135 if (opt == ON) |
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136 { |
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|
137 dropsums[r] -= tl; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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|
138 dropsums[k] -= tl; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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139 } |
df64071e538c
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parents:
diff
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|
140 } |
19055
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|
141 // Update the linked list and the first entry of the actual column. |
19054
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142 if ((jjrow + 1) < jend) |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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parents:
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|
143 { |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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parents:
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|
144 Lfirst[jrow]++; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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parents:
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|
145 j = jrow; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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parents:
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|
146 jrow = Llist[jrow]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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|
147 Llist[j] = Llist[ridx[Lfirst[j]]]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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148 Llist[ridx[Lfirst[j]]] = j; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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|
149 } |
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150 else |
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151 jrow = Llist[jrow]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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|
152 } |
df64071e538c
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153 |
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154 if (opt == ON) |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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parents:
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|
155 data[j1] += dropsums[k]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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156 |
21419
13415264b9f8
Fix out-of-bounds memory access in ichol, ilu (bug #46449).
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|
157 // Test for j1 == j2 must be first to avoid invalid ridx[j1] access |
13415264b9f8
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|
158 if (j1 == j2 || ridx[j1] != k) |
20831
35241c4b696c
eliminate return statements after calls to error
John W. Eaton <jwe@octave.org>
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diff
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|
159 error ("ichol: encountered a pivot equal to 0"); |
19054
df64071e538c
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160 |
df64071e538c
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|
161 if (! ichol_checkpivot (data[j1])) |
df64071e538c
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162 break; |
df64071e538c
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163 |
df64071e538c
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|
164 data[cidx[k]] = std::sqrt (data[j1]); |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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165 |
19055
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diff
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|
166 // Update Llist and Lfirst with the k-column information. Also, |
38937efbee21
Incorporate new functions ichol and ilu into Octave.
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19054
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|
167 // scale the column elements by the pivot and reset the working array iw. |
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Incorporate new functions ichol and ilu into Octave.
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|
168 if (k < (n - 1)) |
19054
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|
169 { |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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parents:
diff
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|
170 iw[ridx[j1]] = -1; |
19055
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|
171 for (i = j1 + 1; i < j2; i++) |
19054
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Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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parents:
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|
172 { |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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parents:
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|
173 iw[ridx[i]] = -1; |
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174 data[i] /= data[j1]; |
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175 } |
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176 Lfirst[k] = j1; |
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177 if ((Lfirst[k] + 1) < j2) |
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178 { |
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179 Lfirst[k]++; |
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180 jjrow = ridx[Lfirst[k]]; |
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181 Llist[k] = Llist[jjrow]; |
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182 Llist[jjrow] = k; |
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183 } |
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184 } |
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185 } |
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186 } |
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187 |
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188 DEFUN (__ichol0__, args, , |
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189 doc: /* -*- texinfo -*- |
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190 @deftypefn {} {@var{L} =} __ichol0__ (@var{A}, @var{michol}) |
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191 Undocumented internal function. |
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192 @end deftypefn */) |
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193 { |
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194 if (args.length () != 2) |
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195 print_usage (); |
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196 |
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197 std::string michol = args(1).string_value (); |
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198 |
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199 // In ICHOL0 algorithm the zero-pattern of the input matrix is preserved |
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200 // so its structure does not change during the algorithm. The same input |
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201 // matrix is used to build the output matrix due to that fact. |
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202 if (! args(0).iscomplex ()) |
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203 { |
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204 SparseMatrix sm = Ftril (args(0))(0).sparse_matrix_value (); |
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205 ichol_0 <SparseMatrix, double, ichol_mult_real, |
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206 ichol_checkpivot_real> (sm, michol); |
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207 return ovl (sm); |
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208 } |
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209 else |
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210 { |
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211 SparseComplexMatrix sm |
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212 = Ftril (args(0))(0).sparse_complex_matrix_value (); |
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213 ichol_0 <SparseComplexMatrix, Complex, ichol_mult_complex, |
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214 ichol_checkpivot_complex> (sm, michol); |
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215 return ovl (sm); |
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216 } |
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217 } |
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218 |
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219 template <typename octave_matrix_t, typename T, T (*ichol_mult) (T, T), |
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220 bool (*ichol_checkpivot) (T)> |
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221 void ichol_t (const octave_matrix_t& sm, octave_matrix_t& L, const T* cols_norm, |
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222 const T droptol, const std::string michol = "off") |
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223 { |
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224 |
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225 const octave_idx_type n = sm.cols (); |
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226 octave_idx_type j, jrow, jend, jjrow, i, k, jj, total_len, |
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227 w_len, max_len, ind; |
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228 char opt; |
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229 enum {OFF, ON}; |
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230 if (michol == "on") |
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231 opt = ON; |
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232 else |
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233 opt = OFF; |
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234 |
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235 // Input matrix pointers |
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236 octave_idx_type *cidx = sm.cidx (); |
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237 octave_idx_type *ridx = sm.ridx (); |
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238 T* data = sm.data (); |
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239 |
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240 // Output matrix data structures. Because the final zero pattern pattern of |
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241 // the output matrix is not known due to fill-in elements, a heuristic |
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242 // approach has been adopted for memory allocation. The size of ridx_out_l |
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243 // and data_out_l is incremented 10% of their actual size (nnz (A) in the |
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244 // beginning). If that amount is less than n, their size is just incremented |
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245 // in n elements. This way the number of reallocations decreases throughout |
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246 // the process, obtaining a good performance. |
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247 max_len = sm.nnz (); |
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248 max_len += (0.1 * max_len) > n ? 0.1 * max_len : n; |
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249 Array <octave_idx_type> cidx_out_l (dim_vector (n + 1, 1)); |
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250 octave_idx_type *cidx_l = cidx_out_l.fortran_vec (); |
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251 Array <octave_idx_type> ridx_out_l (dim_vector (max_len, 1)); |
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252 octave_idx_type *ridx_l = ridx_out_l.fortran_vec (); |
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253 Array <T> data_out_l (dim_vector (max_len, 1)); |
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254 T* data_l = data_out_l.fortran_vec (); |
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255 |
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256 // Working arrays |
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257 OCTAVE_LOCAL_BUFFER (T, w_data, n); |
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258 OCTAVE_LOCAL_BUFFER (octave_idx_type, Lfirst, n); |
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259 OCTAVE_LOCAL_BUFFER (octave_idx_type, Llist, n); |
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260 OCTAVE_LOCAL_BUFFER (T, col_drops, n); |
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261 std::vector<octave_idx_type> vec (n, 0); |
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262 std::vector<bool> mark (n, false); |
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263 |
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264 T zero = T (0); |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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265 cidx_l[0] = cidx[0]; |
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Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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266 for (i = 0; i < n; i++) |
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267 { |
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268 Llist[i] = -1; |
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269 Lfirst[i] = -1; |
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270 w_data[i] = 0; |
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271 col_drops[i] = zero; |
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272 } |
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273 |
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274 total_len = 0; |
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275 for (k = 0; k < n; k++) |
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276 { |
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277 ind = 0; |
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278 for (j = cidx[k]; j < cidx[k+1]; j++) |
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279 { |
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280 w_data[ridx[j]] = data[j]; |
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281 // Mark column index, intentionally outside the if-clause to ensure |
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282 // that mark[k] will be set to true as well. |
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283 mark[ridx[j]] = true; |
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284 if (ridx[j] != k) |
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285 { |
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Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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286 vec[ind] = ridx[j]; |
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287 ind++; |
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288 } |
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289 } |
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290 jrow = Llist[k]; |
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291 while (jrow != -1) |
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292 { |
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293 jjrow = Lfirst[jrow]; |
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294 jend = cidx_l[jrow+1]; |
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Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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295 for (jj = jjrow; jj < jend; jj++) |
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296 { |
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297 j = ridx_l[jj]; |
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298 // If the element in the j position of the row is zero, |
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299 // then it will become non-zero, so we add it to the |
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300 // vector that tracks non-zero elements in the working row. |
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301 if (! mark[j]) |
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302 { |
23899
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303 mark[j] = true; |
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304 vec[ind] = j; |
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305 ind++; |
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306 } |
21568
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maint: Eliminate bad spacing around '='.
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307 w_data[j] -= ichol_mult (data_l[jj], data_l[jjrow]); |
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308 } |
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309 // Update the actual column first element and |
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310 // update the linked list of the jrow row. |
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311 if ((jjrow + 1) < jend) |
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312 { |
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313 Lfirst[jrow]++; |
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314 j = jrow; |
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315 jrow = Llist[jrow]; |
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316 Llist[j] = Llist[ridx_l[Lfirst[j]]]; |
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317 Llist[ridx_l[Lfirst[j]]] = j; |
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318 } |
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319 else |
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320 jrow = Llist[jrow]; |
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321 } |
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322 |
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323 // Resizing output arrays |
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324 if ((max_len - total_len) < n) |
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325 { |
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326 max_len += (0.1 * max_len) > n ? 0.1 * max_len : n; |
df64071e538c
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327 data_out_l.resize (dim_vector (max_len, 1)); |
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328 data_l = data_out_l.fortran_vec (); |
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329 ridx_out_l.resize (dim_vector (max_len, 1)); |
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330 ridx_l = ridx_out_l.fortran_vec (); |
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331 } |
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332 |
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333 // The sorting of the non-zero elements of the working column can be |
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334 // handled in a couple of ways. The most efficient two I found, are |
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335 // keeping the elements in an ordered binary search tree dynamically or |
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|
336 // keep them unsorted in a vector and at the end of the outer iteration |
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337 // order them. The last approach exhibits lower execution times. |
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338 std::sort (vec.begin (), vec.begin () + ind); |
df64071e538c
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339 |
df64071e538c
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|
340 data_l[total_len] = w_data[k]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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341 ridx_l[total_len] = k; |
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Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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342 w_len = 1; |
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343 |
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344 // Extract the non-zero elements of working column and |
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345 // drop the elements that are lower than droptol * cols_norm[k]. |
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df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
346 for (i = 0; i < ind ; i++) |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
347 { |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
348 jrow = vec[i]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
349 if (w_data[jrow] != zero) |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
350 { |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
351 if (std::abs (w_data[jrow]) < (droptol * cols_norm[k])) |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
352 { |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
353 if (opt == ON) |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
354 { |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
355 col_drops[k] += w_data[jrow]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
356 col_drops[jrow] += w_data[jrow]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
357 } |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
358 } |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
359 else |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
360 { |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
361 data_l[total_len + w_len] = w_data[jrow]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
362 ridx_l[total_len + w_len] = jrow; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
363 w_len++; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
364 } |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
365 } |
23899
437ba51e8bcf
Fix segfault in ichol under certain conditions (bug #51736).
Richard Zweig <richard.zweig@gmx.de>
parents:
23219
diff
changeset
|
366 // Clear mark, vec, and w_data. However, mark[k] is not set to zero. |
437ba51e8bcf
Fix segfault in ichol under certain conditions (bug #51736).
Richard Zweig <richard.zweig@gmx.de>
parents:
23219
diff
changeset
|
367 mark[jrow] = false; |
437ba51e8bcf
Fix segfault in ichol under certain conditions (bug #51736).
Richard Zweig <richard.zweig@gmx.de>
parents:
23219
diff
changeset
|
368 vec[i] = 0; |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
369 w_data[jrow] = zero; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
370 } |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
371 |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
372 // Compensate column sums --> michol option |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
373 if (opt == ON) |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
374 data_l[total_len] += col_drops[k]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
375 |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
376 if (data_l[total_len] == zero) |
20831
35241c4b696c
eliminate return statements after calls to error
John W. Eaton <jwe@octave.org>
parents:
20802
diff
changeset
|
377 error ("ichol: encountered a pivot equal to 0"); |
35241c4b696c
eliminate return statements after calls to error
John W. Eaton <jwe@octave.org>
parents:
20802
diff
changeset
|
378 |
35241c4b696c
eliminate return statements after calls to error
John W. Eaton <jwe@octave.org>
parents:
20802
diff
changeset
|
379 if (! ichol_checkpivot (data_l[total_len])) |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
380 break; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
381 |
19055
38937efbee21
Incorporate new functions ichol and ilu into Octave.
Rik <rik@octave.org>
parents:
19054
diff
changeset
|
382 // Once elements are dropped and compensation of column sums are done, |
38937efbee21
Incorporate new functions ichol and ilu into Octave.
Rik <rik@octave.org>
parents:
19054
diff
changeset
|
383 // scale the elements by the pivot. |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
384 data_l[total_len] = std::sqrt (data_l[total_len]); |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
385 for (jj = total_len + 1; jj < (total_len + w_len); jj++) |
21568
3d60ed163b70
maint: Eliminate bad spacing around '='.
Rik <rik@octave.org>
parents:
21419
diff
changeset
|
386 data_l[jj] /= data_l[total_len]; |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
387 total_len += w_len; |
19055
38937efbee21
Incorporate new functions ichol and ilu into Octave.
Rik <rik@octave.org>
parents:
19054
diff
changeset
|
388 // Check if there are too many elements to be indexed with |
38937efbee21
Incorporate new functions ichol and ilu into Octave.
Rik <rik@octave.org>
parents:
19054
diff
changeset
|
389 // octave_idx_type type due to fill-in during the process. |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
390 if (total_len < 0) |
20831
35241c4b696c
eliminate return statements after calls to error
John W. Eaton <jwe@octave.org>
parents:
20802
diff
changeset
|
391 error ("ichol: integer overflow. Too many fill-in elements in L"); |
35241c4b696c
eliminate return statements after calls to error
John W. Eaton <jwe@octave.org>
parents:
20802
diff
changeset
|
392 |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
393 cidx_l[k+1] = cidx_l[k] - cidx_l[0] + w_len; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
394 |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
395 // Update Llist and Lfirst with the k-column information. |
19055
38937efbee21
Incorporate new functions ichol and ilu into Octave.
Rik <rik@octave.org>
parents:
19054
diff
changeset
|
396 if (k < (n - 1)) |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
397 { |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
398 Lfirst[k] = cidx_l[k]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
399 if ((Lfirst[k] + 1) < cidx_l[k+1]) |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
400 { |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
401 Lfirst[k]++; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
402 jjrow = ridx_l[Lfirst[k]]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
403 Llist[k] = Llist[jjrow]; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
404 Llist[jjrow] = k; |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
405 } |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
406 } |
19055
38937efbee21
Incorporate new functions ichol and ilu into Octave.
Rik <rik@octave.org>
parents:
19054
diff
changeset
|
407 } |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
408 |
20555
f90c8372b7ba
eliminate many more simple uses of error_state
John W. Eaton <jwe@octave.org>
parents:
19877
diff
changeset
|
409 // Build the output matrices |
f90c8372b7ba
eliminate many more simple uses of error_state
John W. Eaton <jwe@octave.org>
parents:
19877
diff
changeset
|
410 L = octave_matrix_t (n, n, total_len); |
f90c8372b7ba
eliminate many more simple uses of error_state
John W. Eaton <jwe@octave.org>
parents:
19877
diff
changeset
|
411 |
f90c8372b7ba
eliminate many more simple uses of error_state
John W. Eaton <jwe@octave.org>
parents:
19877
diff
changeset
|
412 for (i = 0; i <= n; i++) |
f90c8372b7ba
eliminate many more simple uses of error_state
John W. Eaton <jwe@octave.org>
parents:
19877
diff
changeset
|
413 L.cidx (i) = cidx_l[i]; |
f90c8372b7ba
eliminate many more simple uses of error_state
John W. Eaton <jwe@octave.org>
parents:
19877
diff
changeset
|
414 |
f90c8372b7ba
eliminate many more simple uses of error_state
John W. Eaton <jwe@octave.org>
parents:
19877
diff
changeset
|
415 for (i = 0; i < total_len; i++) |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
416 { |
20555
f90c8372b7ba
eliminate many more simple uses of error_state
John W. Eaton <jwe@octave.org>
parents:
19877
diff
changeset
|
417 L.ridx (i) = ridx_l[i]; |
f90c8372b7ba
eliminate many more simple uses of error_state
John W. Eaton <jwe@octave.org>
parents:
19877
diff
changeset
|
418 L.data (i) = data_l[i]; |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
419 } |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
420 } |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
421 |
20915
a3359fe50966
remove unused nargout variables
John W. Eaton <jwe@octave.org>
parents:
20909
diff
changeset
|
422 DEFUN (__icholt__, args, , |
21966
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
423 doc: /* -*- texinfo -*- |
23099
d44537a50f4b
__ilu__ and __ichol__: use liboctave functions instead of feval (bug #50105)
Kai T. Ohlhus <k.ohlhus@gmail.com>
parents:
23084
diff
changeset
|
424 @deftypefn {} {@var{L} =} __icholt__ (@var{A}, @var{droptol}, @var{michol}) |
21966
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
425 Undocumented internal function. |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
426 @end deftypefn */) |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
427 { |
23099
d44537a50f4b
__ilu__ and __ichol__: use liboctave functions instead of feval (bug #50105)
Kai T. Ohlhus <k.ohlhus@gmail.com>
parents:
23084
diff
changeset
|
428 if (args.length () != 3) |
d44537a50f4b
__ilu__ and __ichol__: use liboctave functions instead of feval (bug #50105)
Kai T. Ohlhus <k.ohlhus@gmail.com>
parents:
23084
diff
changeset
|
429 print_usage (); |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
diff
changeset
|
430 |
23099
d44537a50f4b
__ilu__ and __ichol__: use liboctave functions instead of feval (bug #50105)
Kai T. Ohlhus <k.ohlhus@gmail.com>
parents:
23084
diff
changeset
|
431 double droptol = args(1).double_value (); |
d44537a50f4b
__ilu__ and __ichol__: use liboctave functions instead of feval (bug #50105)
Kai T. Ohlhus <k.ohlhus@gmail.com>
parents:
23084
diff
changeset
|
432 std::string michol = args(2).string_value (); |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
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433 |
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434 if (! args(0).iscomplex ()) |
19054
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Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
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435 { |
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436 SparseMatrix L; |
23099
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Kai T. Ohlhus <k.ohlhus@gmail.com>
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437 SparseMatrix sm_l = Ftril (args(0))(0).sparse_matrix_value (); |
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438 ichol_t <SparseMatrix, |
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439 double, ichol_mult_real, ichol_checkpivot_real> |
29961
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440 (sm_l, L, xcolnorms (sm_l, 1).fortran_vec (), droptol, michol); |
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441 |
20918
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442 return ovl (L); |
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443 } |
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444 else |
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445 { |
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446 SparseComplexMatrix L; |
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447 SparseComplexMatrix sm_l |
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448 = Ftril (args(0))(0).sparse_complex_matrix_value (); |
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449 Array <Complex> cols_norm = xcolnorms (sm_l, 1); |
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450 ichol_t <SparseComplexMatrix, |
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451 Complex, ichol_mult_complex, ichol_checkpivot_complex> |
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452 (sm_l, L, cols_norm.fortran_vec (), |
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453 Complex (droptol), michol); |
20555
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John W. Eaton <jwe@octave.org>
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454 |
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455 return ovl (L); |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
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456 } |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
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457 } |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
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458 |
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
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459 /* |
26946
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460 %!test <*51736> |
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461 %! k = 4; |
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462 %! n = 2^k; |
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463 %! Afull = diag (ones (n,1)) / ... |
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464 %! 2+triu ([zeros(n,2), [n.^-[1;1;2]*ones(1,n-2);zeros(n-3,n-2)]], 1); |
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465 %! A = sparse (Afull + Afull.'); |
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466 %! opts.type = "ict"; |
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467 %! opts.droptol = 0; |
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468 %! L = ichol (A, opts); |
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469 %! assert (norm (A - L*L.'), 0, 2*eps); |
19054
df64071e538c
Removed ichol0.cc, icholt.cc, ilu0.cc, iluc.cc, ilutp.cc. Created __ichol__.cc and __ilu__.cc. Minor bugs fixed.
Eduardo Ramos (edu159) <eduradical951@gmail.com>
parents:
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470 */ |
29958
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John W. Eaton <jwe@octave.org>
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471 |
32c3a5805893
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John W. Eaton <jwe@octave.org>
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472 OCTAVE_NAMESPACE_END |