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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 Octave is free software; you can redistribute it and/or modify it |
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6 under the terms of the GNU General Public License as published by the |
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7 Free Software Foundation; either version 2, or (at your option) any |
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8 later version. |
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9 |
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10 Octave is distributed in the hope that it will be useful, but WITHOUT |
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11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 for more details. |
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14 |
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15 You should have received a copy of the GNU General Public License |
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16 along with this program; see the file COPYING. If not, write to the |
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17 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
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18 Boston, MA 02110-1301, USA. |
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19 |
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20 */ |
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21 |
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22 #if !defined (sparse_QR_h) |
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23 #define sparse_QR_h 1 |
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24 |
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25 #include <iostream> |
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26 |
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27 #include "dMatrix.h" |
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28 #include "CMatrix.h" |
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29 #include "dSparse.h" |
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30 #include "CSparse.h" |
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31 #include "oct-sparse.h" |
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32 |
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33 #ifdef IDX_TYPE_LONG |
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34 #define CXSPARSE_DNAME(name) cs_dl ## name |
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35 #else |
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36 #define CXSPARSE_DNAME(name) cs_di ## name |
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37 #endif |
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38 |
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39 class |
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40 OCTAVE_API |
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41 SparseQR |
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42 { |
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43 protected: |
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44 class SparseQR_rep |
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45 { |
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46 public: |
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47 SparseQR_rep (const SparseMatrix& a, int order); |
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48 |
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49 ~SparseQR_rep (void); |
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50 #ifdef HAVE_CXSPARSE |
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51 bool ok (void) const { return (N && S); } |
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52 #else |
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53 bool ok (void) const { return false; } |
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54 #endif |
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55 SparseMatrix V (void) const; |
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56 |
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57 ColumnVector Pinv (void) const; |
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58 |
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59 ColumnVector P (void) const; |
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60 |
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61 SparseMatrix R (const bool econ) const; |
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62 |
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63 Matrix C (const Matrix &b) const; |
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64 |
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65 int count; |
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66 |
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67 octave_idx_type nrows; |
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68 #ifdef HAVE_CXSPARSE |
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69 CXSPARSE_DNAME (s) *S; |
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70 |
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71 CXSPARSE_DNAME (n) *N; |
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72 #endif |
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73 }; |
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74 private: |
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75 SparseQR_rep *rep; |
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76 |
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77 public: |
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78 SparseQR (void) : rep (new SparseQR_rep (SparseMatrix(), 0)) { } |
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79 |
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80 SparseQR (const SparseMatrix& a, int order = 0) : |
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81 rep (new SparseQR_rep (a, order)) { } |
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82 |
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83 SparseQR (const SparseQR& a) : rep (a.rep) { rep->count++; } |
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84 |
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85 ~SparseQR (void) |
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86 { |
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87 if (--rep->count <= 0) |
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88 delete rep; |
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89 } |
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90 |
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91 SparseQR& operator = (const SparseQR& a) |
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92 { |
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93 if (this != &a) |
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94 { |
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95 if (--rep->count <= 0) |
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96 delete rep; |
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97 |
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98 rep = a.rep; |
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99 rep->count++; |
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100 } |
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101 return *this; |
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102 } |
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103 |
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104 bool ok (void) const { return rep->ok(); } |
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105 |
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106 SparseMatrix V (void) const { return rep->V(); } |
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107 |
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108 ColumnVector Pinv (void) const { return rep->P(); } |
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109 |
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110 ColumnVector P (void) const { return rep->P(); } |
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111 |
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112 SparseMatrix R (const bool econ = false) const { return rep->R(econ); } |
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113 |
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114 Matrix C (const Matrix &b) const { return rep->C(b); } |
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115 |
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116 friend Matrix qrsolve (const SparseMatrix &a, const Matrix &b, |
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117 octave_idx_type &info); |
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118 |
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119 friend SparseMatrix qrsolve (const SparseMatrix &a, const SparseMatrix &b, |
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120 octave_idx_type &info); |
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121 |
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122 friend ComplexMatrix qrsolve (const SparseMatrix &a, const ComplexMatrix &b, |
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123 octave_idx_type &info); |
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124 |
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125 friend SparseComplexMatrix qrsolve (const SparseMatrix &a, |
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126 const SparseComplexMatrix &b, |
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127 octave_idx_type &info); |
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128 |
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129 protected: |
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130 #ifdef HAVE_CXSPARSE |
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131 CXSPARSE_DNAME (s) * S (void) { return rep->S; } |
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132 |
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133 CXSPARSE_DNAME (n) * N (void) { return rep->N; } |
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134 #endif |
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135 }; |
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136 |
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137 |
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138 // Publish externally used friend functions. |
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139 |
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140 extern Matrix qrsolve (const SparseMatrix &a, const Matrix &b, |
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141 octave_idx_type &info); |
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142 |
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143 extern SparseMatrix qrsolve (const SparseMatrix &a, const SparseMatrix &b, |
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144 octave_idx_type &info); |
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145 |
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146 extern ComplexMatrix qrsolve (const SparseMatrix &a, const ComplexMatrix &b, |
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147 octave_idx_type &info); |
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148 |
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149 extern SparseComplexMatrix qrsolve (const SparseMatrix &a, |
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150 const SparseComplexMatrix &b, |
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151 octave_idx_type &info); |
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152 |
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153 #endif |
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154 |
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155 /* |
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156 ;;; Local Variables: *** |
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157 ;;; mode: C++ *** |
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158 ;;; End: *** |
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159 */ |
