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annotate liboctave/numeric/sparse-qr.h @ 29358:0a5b15007766 stable

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update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2021.
author John W. Eaton <jwe@octave.org>
date Wed, 10 Feb 2021 09:52:15 -0500
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2005-2021 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 (octave_sparse_qr_h)
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27 #define octave_sparse_qr_h 1
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28
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29 #include "octave-config.h"
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30
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31 #include "oct-cmplx.h"
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32
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33 class Matrix;
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34 class ComplexMatrix;
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35 class SparseComplexMatrix;
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36 class SparseMatrix;
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37 class ColumnVector;
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38 template <typename T> class MArray;
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39
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40 namespace octave
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41 {
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42 namespace math
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43 {
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44 // If the sparse matrix classes become templated on the element type
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45 // (i.e., sparse_matrix<double>), then it might be best to make the
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46 // template parameter of this class also be the element type instead
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47 // of the matrix type.
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48
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49 template <typename SPARSE_T>
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50 class
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51 sparse_qr
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52 {
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53 public:
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54
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55 sparse_qr (void);
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56
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57 sparse_qr (const SPARSE_T& a, int order = 0);
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58
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59 sparse_qr (const sparse_qr& a);
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60
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61 ~sparse_qr (void);
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62
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63 sparse_qr& operator = (const sparse_qr& a);
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64
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65 bool ok (void) const;
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66
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67 SPARSE_T V (void) const;
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68
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69 ColumnVector Pinv (void) const;
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70
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71 ColumnVector P (void) const;
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72
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73 SPARSE_T R (bool econ = false) const;
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74
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75 typename SPARSE_T::dense_matrix_type
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76 C (const typename SPARSE_T::dense_matrix_type& b) const;
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77
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78 typename SPARSE_T::dense_matrix_type
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79 Q (void) const;
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80
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81 template <typename RHS_T, typename RET_T>
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82 static RET_T
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83 solve (const SPARSE_T& a, const RHS_T& b,
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84 octave_idx_type& info);
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85
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86 private:
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87
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88 class sparse_qr_rep;
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89
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90 sparse_qr_rep *rep;
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91
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92 template <typename RHS_T, typename RET_T>
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93 RET_T
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94 tall_solve (const RHS_T& b, octave_idx_type& info) const;
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95
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96 template <typename RHS_T, typename RET_T>
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97 RET_T
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98 wide_solve (const RHS_T& b, octave_idx_type& info) const;
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99 };
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100
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101 // Provide qrsolve for backward compatibility.
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102
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103 extern Matrix
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104 qrsolve (const SparseMatrix& a, const MArray<double>& b,
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105 octave_idx_type& info);
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106
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107 extern SparseMatrix
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108 qrsolve (const SparseMatrix& a, const SparseMatrix& b,
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109 octave_idx_type& info);
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110
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111 extern ComplexMatrix
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112 qrsolve (const SparseMatrix& a, const MArray<Complex>& b,
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113 octave_idx_type& info);
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114
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115 extern SparseComplexMatrix
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116 qrsolve (const SparseMatrix& a, const SparseComplexMatrix& b,
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117 octave_idx_type& info);
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118
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119 extern ComplexMatrix
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120 qrsolve (const SparseComplexMatrix& a, const MArray<double>& b,
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121 octave_idx_type& info);
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122
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123 extern SparseComplexMatrix
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124 qrsolve (const SparseComplexMatrix& a, const SparseMatrix& b,
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125 octave_idx_type& info);
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126
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127 extern ComplexMatrix
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128 qrsolve (const SparseComplexMatrix& a, const MArray<Complex>& b,
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129 octave_idx_type& info);
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130
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131 extern SparseComplexMatrix
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132 qrsolve (const SparseComplexMatrix& a, const SparseComplexMatrix& b,
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133 octave_idx_type& info);
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134
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135 typedef sparse_qr<SparseMatrix> SparseQR;
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parents: 22323
diff changeset
136 typedef sparse_qr<SparseComplexMatrix> SparseComplexQR;
7f3c7a8bd131 maint: Indent namespaces in liboctave/numeric files.
John W. Eaton <jwe@octave.org>
parents: 22323
diff changeset
137 }
22317
6ca3acf5fad8 move some new numeric classes to namespace octave::math
John W. Eaton <jwe@octave.org>
parents: 21244
diff changeset
138 }
6ca3acf5fad8 move some new numeric classes to namespace octave::math
John W. Eaton <jwe@octave.org>
parents: 21244
diff changeset
139
21176
791dcb32b657 revamp sparse QR factorizatino classes
John W. Eaton <jwe@octave.org>
parents:
diff changeset
140 #endif