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1 /* |
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2 |
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3 Copyright (C) 2005 David Bateman |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 3 of the License, or (at your |
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10 option) any later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 #if !defined (sparse_QR_h) |
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24 #define sparse_QR_h 1 |
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25 |
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26 #include <iostream> |
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27 |
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28 #include "dMatrix.h" |
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29 #include "CMatrix.h" |
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30 #include "dSparse.h" |
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31 #include "CSparse.h" |
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32 #include "oct-sparse.h" |
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33 |
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34 #ifdef IDX_TYPE_LONG |
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35 #define CXSPARSE_DNAME(name) cs_dl ## name |
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36 #else |
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37 #define CXSPARSE_DNAME(name) cs_di ## name |
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38 #endif |
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39 |
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40 class |
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41 OCTAVE_API |
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42 SparseQR |
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43 { |
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44 protected: |
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45 class SparseQR_rep |
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46 { |
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47 public: |
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48 SparseQR_rep (const SparseMatrix& a, int order); |
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49 |
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50 ~SparseQR_rep (void); |
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51 #ifdef HAVE_CXSPARSE |
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52 bool ok (void) const { return (N && S); } |
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53 #else |
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54 bool ok (void) const { return false; } |
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55 #endif |
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56 SparseMatrix V (void) const; |
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57 |
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58 ColumnVector Pinv (void) const; |
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59 |
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60 ColumnVector P (void) const; |
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61 |
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62 SparseMatrix R (const bool econ) const; |
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63 |
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64 Matrix C (const Matrix &b) const; |
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65 |
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66 int count; |
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67 |
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68 octave_idx_type nrows; |
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69 #ifdef HAVE_CXSPARSE |
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70 CXSPARSE_DNAME (s) *S; |
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71 |
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72 CXSPARSE_DNAME (n) *N; |
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73 #endif |
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74 }; |
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75 private: |
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76 SparseQR_rep *rep; |
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77 |
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78 public: |
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79 SparseQR (void) : rep (new SparseQR_rep (SparseMatrix(), 0)) { } |
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80 |
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81 SparseQR (const SparseMatrix& a, int order = 0) : |
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82 rep (new SparseQR_rep (a, order)) { } |
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83 |
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84 SparseQR (const SparseQR& a) : rep (a.rep) { rep->count++; } |
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85 |
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86 ~SparseQR (void) |
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87 { |
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88 if (--rep->count <= 0) |
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89 delete rep; |
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90 } |
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91 |
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92 SparseQR& operator = (const SparseQR& a) |
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93 { |
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94 if (this != &a) |
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95 { |
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96 if (--rep->count <= 0) |
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97 delete rep; |
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98 |
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99 rep = a.rep; |
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100 rep->count++; |
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101 } |
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102 return *this; |
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103 } |
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104 |
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105 bool ok (void) const { return rep->ok(); } |
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106 |
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107 SparseMatrix V (void) const { return rep->V(); } |
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108 |
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109 ColumnVector Pinv (void) const { return rep->P(); } |
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110 |
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111 ColumnVector P (void) const { return rep->P(); } |
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112 |
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113 SparseMatrix R (const bool econ = false) const { return rep->R(econ); } |
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114 |
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115 Matrix C (const Matrix &b) const { return rep->C(b); } |
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116 |
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117 friend Matrix qrsolve (const SparseMatrix &a, const Matrix &b, |
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118 octave_idx_type &info); |
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119 |
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120 friend SparseMatrix qrsolve (const SparseMatrix &a, const SparseMatrix &b, |
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121 octave_idx_type &info); |
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122 |
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123 friend ComplexMatrix qrsolve (const SparseMatrix &a, const ComplexMatrix &b, |
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124 octave_idx_type &info); |
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125 |
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126 friend SparseComplexMatrix qrsolve (const SparseMatrix &a, |
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127 const SparseComplexMatrix &b, |
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128 octave_idx_type &info); |
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129 |
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130 protected: |
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131 #ifdef HAVE_CXSPARSE |
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132 CXSPARSE_DNAME (s) * S (void) { return rep->S; } |
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133 |
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134 CXSPARSE_DNAME (n) * N (void) { return rep->N; } |
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135 #endif |
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136 }; |
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137 |
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138 |
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139 // Publish externally used friend functions. |
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140 |
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141 extern Matrix qrsolve (const SparseMatrix &a, const Matrix &b, |
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142 octave_idx_type &info); |
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143 |
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144 extern SparseMatrix qrsolve (const SparseMatrix &a, const SparseMatrix &b, |
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145 octave_idx_type &info); |
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146 |
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147 extern ComplexMatrix qrsolve (const SparseMatrix &a, const ComplexMatrix &b, |
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148 octave_idx_type &info); |
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149 |
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150 extern SparseComplexMatrix qrsolve (const SparseMatrix &a, |
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151 const SparseComplexMatrix &b, |
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152 octave_idx_type &info); |
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153 |
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154 #endif |
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155 |
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156 /* |
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157 ;;; Local Variables: *** |
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158 ;;; mode: C++ *** |
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159 ;;; End: *** |
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160 */ |
