Mercurial > octave
annotate libinterp/corefcn/__ichol__.cc @ 20909:03e4ddd49396
omit unnecessary nargout checks
* paramdemo.cc, __ichol__.cc, __ilu__.cc, balance.cc, dassl.cc,
eig.cc, ellipj.cc, filter.cc, givens.cc, hess.cc, lsode.cc, lu.cc,
mgorth.cc, nproc.cc, pr-output.cc, quad.cc, quadcc.cc, sylvester.cc,
urlwrite.cc, variables.cc, ccolamd.cc, colamd.cc, qr.cc: Don't call
print_usage based on value of nargout. If nargout doesn't alter
function behavior and returning extra values is inexpensive, simply
return them instead of checking nargout.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 16 Dec 2015 11:41:11 -0500 |
parents | 1142cf6abc0d |
children | a3359fe50966 |
rev | line source |
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1 /* |
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2 |
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3 Copyright (C) 2014-2015 Eduardo Ramos Fernández <eduradical951@gmail.com> |
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4 Copyright (C) 2013-2015 Kai T. Ohlhus <k.ohlhus@gmail.com> |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 3 of the License, or (at your |
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11 option) any later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, see |
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20 <http://www.gnu.org/licenses/>. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include "oct-locbuf.h" |
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29 |
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30 #include "defun.h" |
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31 #include "error.h" |
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32 #include "parse.h" |
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33 |
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34 // Secondary functions for complex and real case used in ichol algorithms. |
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35 Complex ichol_mult_complex (Complex a, Complex b) |
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36 { |
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37 #if defined (HAVE_CXX_COMPLEX_SETTERS) |
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38 b.imag (-std::imag (b)); |
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39 #elif defined (HAVE_CXX_COMPLEX_REFERENCE_ACCESSORS) |
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40 b.imag () = -std::imag (b); |
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41 #else |
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42 b = std::conj (b); |
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43 #endif |
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44 return a * b; |
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45 } |
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46 |
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47 double ichol_mult_real (double a, double b) |
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48 { |
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49 return a * b; |
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50 } |
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51 |
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52 bool ichol_checkpivot_complex (Complex pivot) |
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53 { |
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54 if (pivot.imag () != 0) |
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55 error ("ichol: non-real pivot encountered. The matrix must be hermitian."); |
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56 else if (pivot.real () < 0) |
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57 error ("ichol: negative pivot encountered"); |
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58 |
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59 return true; |
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60 } |
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61 |
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62 bool ichol_checkpivot_real (double pivot) |
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63 { |
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64 if (pivot < 0) |
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65 error ("ichol: negative pivot encountered"); |
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66 |
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67 return true; |
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68 } |
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69 |
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70 template <typename octave_matrix_t, typename T, T (*ichol_mult) (T, T), |
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71 bool (*ichol_checkpivot) (T)> |
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72 void ichol_0 (octave_matrix_t& sm, const std::string michol = "off") |
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73 { |
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74 |
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75 const octave_idx_type n = sm.cols (); |
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76 octave_idx_type j1, jend, j2, jrow, jjrow, j, jw, i, k, jj, r; |
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77 T tl; |
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78 char opt; |
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79 enum {OFF, ON}; |
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80 if (michol == "on") |
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81 opt = ON; |
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82 else |
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83 opt = OFF; |
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84 |
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85 // Input matrix pointers |
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86 octave_idx_type* cidx = sm.cidx (); |
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87 octave_idx_type* ridx = sm.ridx (); |
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88 T* data = sm.data (); |
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89 |
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90 // Working arrays |
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91 OCTAVE_LOCAL_BUFFER (octave_idx_type, Lfirst, n); |
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92 OCTAVE_LOCAL_BUFFER (octave_idx_type, Llist, n); |
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parents:
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changeset
|
93 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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parents:
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|
94 OCTAVE_LOCAL_BUFFER (T, dropsums, n); |
df64071e538c
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parents:
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95 |
df64071e538c
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parents:
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|
96 // Initialize working arrays |
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parents:
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97 for (i = 0; i < n; i++) |
df64071e538c
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parents:
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98 { |
df64071e538c
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99 iw[i] = -1; |
df64071e538c
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100 Llist[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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101 Lfirst[i] = -1; |
df64071e538c
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102 dropsums[i] = 0; |
df64071e538c
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parents:
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103 } |
df64071e538c
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104 |
19055
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Incorporate new functions ichol and ilu into Octave.
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105 // Main loop |
19054
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106 for (k = 0; k < n; k++) |
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107 { |
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108 j1 = cidx[k]; |
df64071e538c
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109 j2 = cidx[k+1]; |
df64071e538c
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110 for (j = j1; j < j2; j++) |
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111 iw[ridx[j]] = j; |
df64071e538c
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112 |
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113 jrow = Llist [k]; |
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114 // Iterate over each non-zero element in the actual row. |
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115 while (jrow != -1) |
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116 { |
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117 jjrow = Lfirst[jrow]; |
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118 jend = cidx[jrow+1]; |
df64071e538c
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119 for (jj = jjrow; jj < jend; jj++) |
df64071e538c
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parents:
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120 { |
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parents:
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121 r = ridx[jj]; |
df64071e538c
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122 jw = iw[r]; |
df64071e538c
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parents:
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123 tl = ichol_mult (data[jj], data[jjrow]); |
df64071e538c
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124 if (jw != -1) |
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125 data[jw] -= tl; |
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parents:
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126 else |
19055
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127 // Because of the symmetry of the matrix, we know |
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128 // the drops in the column r are also in the column k. |
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129 if (opt == ON) |
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130 { |
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131 dropsums[r] -= tl; |
df64071e538c
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132 dropsums[k] -= tl; |
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133 } |
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parents:
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|
134 } |
19055
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|
135 // Update the linked list and the first entry of the actual column. |
19054
df64071e538c
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parents:
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136 if ((jjrow + 1) < jend) |
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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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137 { |
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parents:
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138 Lfirst[jrow]++; |
df64071e538c
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parents:
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139 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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140 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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parents:
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|
141 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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parents:
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142 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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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 else |
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parents:
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|
145 jrow = Llist[jrow]; |
df64071e538c
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parents:
diff
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|
146 } |
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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|
147 |
df64071e538c
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parents:
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148 if (opt == ON) |
df64071e538c
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parents:
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149 data[j1] += dropsums[k]; |
df64071e538c
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|
150 |
df64071e538c
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parents:
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|
151 if (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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|
152 error ("ichol: encountered a pivot equal to 0"); |
19054
df64071e538c
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|
153 |
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parents:
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|
154 if (! ichol_checkpivot (data[j1])) |
df64071e538c
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|
155 break; |
df64071e538c
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156 |
df64071e538c
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157 data[cidx[k]] = std::sqrt (data[j1]); |
df64071e538c
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parents:
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|
158 |
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Rik <rik@octave.org>
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19054
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|
159 // Update Llist and Lfirst with the k-column information. Also, |
38937efbee21
Incorporate new functions ichol and ilu into Octave.
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|
160 // scale the column elements by the pivot and reset the working array iw. |
38937efbee21
Incorporate new functions ichol and ilu into Octave.
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parents:
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|
161 if (k < (n - 1)) |
19054
df64071e538c
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162 { |
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parents:
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|
163 iw[ridx[j1]] = -1; |
19055
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diff
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|
164 for (i = j1 + 1; i < j2; i++) |
19054
df64071e538c
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parents:
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|
165 { |
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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|
166 iw[ridx[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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|
167 data[i] /= data[j1]; |
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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|
168 } |
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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|
169 Lfirst[k] = 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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parents:
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|
170 if ((Lfirst[k] + 1) < j2) |
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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|
171 { |
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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|
172 Lfirst[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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parents:
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|
173 jjrow = ridx[Lfirst[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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parents:
diff
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174 Llist[k] = Llist[jjrow]; |
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175 Llist[jjrow] = k; |
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176 } |
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177 } |
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178 } |
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179 } |
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180 |
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181 DEFUN (__ichol0__, args, nargout, |
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182 "-*- texinfo -*-\n\ |
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183 @deftypefn {} {@var{L} =} __ichol0__ (@var{A})\n\ |
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184 @deftypefnx {} {@var{L} =} __ichol0__ (@var{A}, @var{michol})\n\ |
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185 Undocumented internal function.\n\ |
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186 @end deftypefn") |
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187 |
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188 { |
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189 octave_value_list retval; |
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190 |
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191 int nargin = args.length (); |
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192 std::string michol = "off"; |
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193 |
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194 if (nargin < 1 || nargin > 2) |
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195 print_usage (); |
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196 |
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197 if (nargin == 2) |
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198 michol = args(1).string_value (); |
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199 |
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200 // In ICHOL0 algorithm the zero-pattern of the input matrix is preserved |
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201 // so it's structure does not change during the algorithm. The same input |
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202 // matrix is used to build the output matrix due to that fact. |
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203 octave_value_list param_list; |
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204 if (!args(0).is_complex_type ()) |
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205 { |
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206 SparseMatrix sm = args(0).sparse_matrix_value (); |
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207 param_list.append (sm); |
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208 sm = feval ("tril", param_list)(0).sparse_matrix_value (); |
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209 ichol_0 <SparseMatrix, double, ichol_mult_real, |
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210 ichol_checkpivot_real> (sm, michol); |
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211 |
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212 retval(0) = sm; |
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213 } |
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214 else |
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215 { |
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216 SparseComplexMatrix sm = args(0).sparse_complex_matrix_value (); |
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217 param_list.append (sm); |
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218 sm = feval ("tril", param_list)(0).sparse_complex_matrix_value (); |
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219 ichol_0 <SparseComplexMatrix, Complex, ichol_mult_complex, |
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220 ichol_checkpivot_complex> (sm, michol); |
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221 |
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222 retval(0) = sm; |
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223 } |
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224 |
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225 return retval; |
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226 } |
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227 |
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228 template <typename octave_matrix_t, typename T, T (*ichol_mult) (T, T), |
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229 bool (*ichol_checkpivot) (T)> |
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230 void ichol_t (const octave_matrix_t& sm, octave_matrix_t& L, const T* cols_norm, |
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231 const T droptol, const std::string michol = "off") |
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232 |
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233 { |
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234 |
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235 const octave_idx_type n = sm.cols (); |
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236 octave_idx_type j, jrow, jend, jjrow, i, k, jj, total_len, |
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237 w_len, max_len, ind; |
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238 char opt; |
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239 enum {OFF, ON}; |
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240 if (michol == "on") |
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241 opt = ON; |
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242 else |
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243 opt = OFF; |
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244 |
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245 // Input matrix pointers |
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246 octave_idx_type* cidx = sm.cidx (); |
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247 octave_idx_type* ridx = sm.ridx (); |
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248 T* data = sm.data (); |
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249 |
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250 // Output matrix data structures. Because the final zero pattern pattern of |
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251 // the output matrix is not known due to fill-in elements, a heuristic |
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252 // approach has been adopted for memory allocation. The size of ridx_out_l |
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253 // and data_out_l is incremented 10% of their actual size (nnz (A) in the |
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254 // beginning). If that amount is less than n, their size is just incremented |
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255 // in n elements. This way the number of reallocations decreases throughout |
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256 // the process, obtaining a good performance. |
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257 max_len = sm.nnz (); |
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258 max_len += (0.1 * max_len) > n ? 0.1 * max_len : n; |
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259 Array <octave_idx_type> cidx_out_l (dim_vector (n + 1, 1)); |
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260 octave_idx_type* cidx_l = cidx_out_l.fortran_vec (); |
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261 Array <octave_idx_type> ridx_out_l (dim_vector (max_len ,1)); |
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262 octave_idx_type* ridx_l = ridx_out_l.fortran_vec (); |
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263 Array <T> data_out_l (dim_vector (max_len, 1)); |
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264 T* data_l = data_out_l.fortran_vec (); |
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265 |
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266 // Working arrays |
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267 OCTAVE_LOCAL_BUFFER (T, w_data, n); |
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268 OCTAVE_LOCAL_BUFFER (octave_idx_type, Lfirst, n); |
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269 OCTAVE_LOCAL_BUFFER (octave_idx_type, Llist, n); |
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270 OCTAVE_LOCAL_BUFFER (T, col_drops, n); |
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271 std::vector <octave_idx_type> vec; |
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272 vec.resize (n); |
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273 |
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274 T zero = T (0); |
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275 cidx_l[0] = cidx[0]; |
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276 for (i = 0; i < n; i++) |
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277 { |
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278 Llist[i] = -1; |
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279 Lfirst[i] = -1; |
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280 w_data[i] = 0; |
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281 col_drops[i] = zero; |
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282 vec[i] = 0; |
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283 } |
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284 |
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285 total_len = 0; |
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286 for (k = 0; k < n; k++) |
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287 { |
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288 ind = 0; |
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289 for (j = cidx[k]; j < cidx[k+1]; j++) |
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290 { |
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291 w_data[ridx[j]] = data[j]; |
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292 if (ridx[j] != k) |
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293 { |
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294 vec[ind] = ridx[j]; |
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295 ind++; |
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296 } |
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297 } |
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298 jrow = Llist[k]; |
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299 while (jrow != -1) |
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300 { |
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301 jjrow = Lfirst[jrow]; |
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302 jend = cidx_l[jrow+1]; |
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303 for (jj = jjrow; jj < jend; jj++) |
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304 { |
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305 j = ridx_l[jj]; |
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306 // If the element in the j position of the row is zero, |
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307 // then it will become non-zero, so we add it to the |
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308 // vector that tracks non-zero elements in the working row. |
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309 if (w_data[j] == zero) |
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310 { |
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311 vec[ind] = j; |
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312 ind++; |
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313 } |
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314 w_data[j] -= ichol_mult (data_l[jj], data_l[jjrow]); |
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315 } |
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316 // Update the actual column first element and |
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317 // update the linked list of the jrow row. |
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318 if ((jjrow + 1) < jend) |
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319 { |
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320 Lfirst[jrow]++; |
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321 j = jrow; |
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322 jrow = Llist[jrow]; |
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323 Llist[j] = Llist[ridx_l[Lfirst[j]]]; |
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324 Llist[ridx_l[Lfirst[j]]] = j; |
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325 } |
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326 else |
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327 jrow = Llist[jrow]; |
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328 } |
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329 |
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330 // Resizing output arrays |
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331 if ((max_len - total_len) < n) |
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332 { |
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333 max_len += (0.1 * max_len) > n ? 0.1 * max_len : n; |
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334 data_out_l.resize (dim_vector (max_len, 1)); |
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335 data_l = data_out_l.fortran_vec (); |
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336 ridx_out_l.resize (dim_vector (max_len, 1)); |
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337 ridx_l = ridx_out_l.fortran_vec (); |
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338 } |
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339 |
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340 // The sorting of the non-zero elements of the working column can be |
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341 // handled in a couple of ways. The most efficient two I found, are |
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342 // keeping the elements in an ordered binary search tree dynamically or |
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343 // keep them unsorted in a vector and at the end of the outer iteration |
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344 // order them. The last approach exhibits lower execution times. |
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345 std::sort (vec.begin (), vec.begin () + ind); |
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346 |
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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347 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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parents:
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|
348 ridx_l[total_len] = 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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parents:
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|
349 w_len = 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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|
350 |
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Incorporate new functions ichol and ilu into Octave.
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|
351 // Extract the non-zero elements of working column and |
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352 // drop the elements that are lower than droptol * cols_norm[k]. |
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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353 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.
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parents:
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|
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:
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|
355 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:
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|
356 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:
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|
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:
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|
358 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:
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|
359 { |
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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|
360 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:
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|
361 { |
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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|
362 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.
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|
363 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:
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|
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
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|
365 } |
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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|
366 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:
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|
367 { |
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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|
368 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:
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|
369 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:
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|
370 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
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|
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:
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|
372 vec[i] = 0; |
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
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|
373 } |
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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|
374 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:
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|
375 } |
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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|
376 |
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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|
377 // 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.
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parents:
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|
378 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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|
379 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.
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parents:
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|
380 |
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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|
381 if (data_l[total_len] == zero) |
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|
382 error ("ichol: encountered a pivot equal to 0"); |
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diff
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|
383 |
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|
384 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.
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|
385 break; |
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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|
386 |
19055
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Incorporate new functions ichol and ilu into Octave.
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parents:
19054
diff
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|
387 // Once elements are dropped and compensation of column sums are done, |
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|
388 // 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.
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parents:
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|
389 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.
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parents:
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|
390 for (jj = total_len + 1; jj < (total_len + w_len); 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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|
391 data_l[jj] /= 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.
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|
392 total_len += w_len; |
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|
393 // Check if there are too many elements to be indexed with |
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|
394 // 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.
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|
395 if (total_len < 0) |
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|
396 error ("ichol: integer overflow. Too many fill-in elements in L"); |
35241c4b696c
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|
397 |
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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parents:
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|
398 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.
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parents:
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|
399 |
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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|
400 // Update Llist and Lfirst with the k-column information. |
19055
38937efbee21
Incorporate new functions ichol and ilu into Octave.
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parents:
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diff
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|
401 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
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|
402 { |
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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|
403 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.
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parents:
diff
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|
404 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
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|
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
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|
406 Lfirst[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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parents:
diff
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|
407 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.
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parents:
diff
changeset
|
408 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.
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parents:
diff
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|
409 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
|
410 } |
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
|
411 } |
19055
38937efbee21
Incorporate new functions ichol and ilu into Octave.
Rik <rik@octave.org>
parents:
19054
diff
changeset
|
412 } |
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
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|
413 |
20555
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John W. Eaton <jwe@octave.org>
parents:
19877
diff
changeset
|
414 // Build the output matrices |
f90c8372b7ba
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diff
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|
415 L = octave_matrix_t (n, n, total_len); |
f90c8372b7ba
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diff
changeset
|
416 |
f90c8372b7ba
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19877
diff
changeset
|
417 for (i = 0; i <= n; i++) |
f90c8372b7ba
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|
418 L.cidx (i) = cidx_l[i]; |
f90c8372b7ba
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diff
changeset
|
419 |
f90c8372b7ba
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19877
diff
changeset
|
420 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
|
421 { |
20555
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19877
diff
changeset
|
422 L.ridx (i) = ridx_l[i]; |
f90c8372b7ba
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|
423 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
|
424 } |
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
|
425 } |
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
|
426 |
19877
12ecb7212b44
move some files without external dependencies from dldfcn to corefcn
John W. Eaton <jwe@octave.org>
parents:
19697
diff
changeset
|
427 DEFUN (__icholt__, args, nargout, |
12ecb7212b44
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diff
changeset
|
428 "-*- texinfo -*-\n\ |
20853
1142cf6abc0d
2015 Code Sprint: remove class of function from docstring for all C++ files.
Rik <rik@octave.org>
parents:
20831
diff
changeset
|
429 @deftypefn {} {@var{L} =} __icholt__ (@var{A})\n\ |
1142cf6abc0d
2015 Code Sprint: remove class of function from docstring for all C++ files.
Rik <rik@octave.org>
parents:
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diff
changeset
|
430 @deftypefnx {} {@var{L} =} __icholt__ (@var{A}, @var{droptol})\n\ |
1142cf6abc0d
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20831
diff
changeset
|
431 @deftypefnx {} {@var{L} =} __icholt__ (@var{A}, @var{droptol}, @var{michol})\n\ |
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parents:
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changeset
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432 Undocumented internal function.\n\ |
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433 @end deftypefn") |
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434 { |
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435 octave_value_list retval; |
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436 int nargin = args.length (); |
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437 // Default values of parameters |
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438 std::string michol = "off"; |
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439 double droptol = 0; |
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440 |
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441 if (nargin < 1 || nargin > 3) |
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442 print_usage (); |
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443 |
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444 // Don't repeat input validation of arguments done in ichol.m |
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445 |
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446 if (nargin >= 2) |
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447 droptol = args(1).double_value (); |
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448 |
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449 if (nargin == 3) |
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450 michol = args(2).string_value (); |
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451 |
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452 octave_value_list param_list; |
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453 if (! args(0).is_complex_type ()) |
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454 { |
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455 Array <double> cols_norm; |
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456 SparseMatrix L; |
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457 param_list.append (args(0).sparse_matrix_value ()); |
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458 SparseMatrix sm_l = |
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459 feval ("tril", param_list)(0).sparse_matrix_value (); |
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460 param_list(0) = sm_l; |
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461 param_list(1) = 1; |
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462 param_list(2) = "cols"; |
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463 cols_norm = feval ("norm", param_list)(0).vector_value (); |
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464 param_list.clear (); |
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465 ichol_t <SparseMatrix, |
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466 double, ichol_mult_real, ichol_checkpivot_real> |
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467 (sm_l, L, cols_norm.fortran_vec (), droptol, michol); |
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468 |
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469 retval(0) = L; |
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470 } |
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471 else |
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472 { |
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473 Array <Complex> cols_norm; |
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474 SparseComplexMatrix L; |
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475 param_list.append (args(0).sparse_complex_matrix_value ()); |
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476 SparseComplexMatrix sm_l = |
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477 feval ("tril", param_list)(0).sparse_complex_matrix_value (); |
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478 param_list(0) = sm_l; |
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479 param_list(1) = 1; |
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480 param_list(2) = "cols"; |
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481 cols_norm = feval ("norm", param_list)(0).complex_vector_value (); |
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482 param_list.clear (); |
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483 ichol_t <SparseComplexMatrix, |
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484 Complex, ichol_mult_complex, ichol_checkpivot_complex> |
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485 (sm_l, L, cols_norm.fortran_vec (), |
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486 Complex (droptol), michol); |
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487 |
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488 retval(0) = L; |
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489 } |
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490 |
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491 return retval; |
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492 } |
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493 |
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494 /* |
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495 ## No test needed for internal helper function. |
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496 %!assert (1) |
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497 */ |
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498 |