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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 SparseQR |
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41 { |
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42 protected: |
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43 class SparseQR_rep |
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44 { |
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45 public: |
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46 SparseQR_rep (const SparseMatrix& a, int order); |
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47 |
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48 ~SparseQR_rep (void); |
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49 #ifdef HAVE_CXSPARSE |
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50 bool ok (void) const { return (N && S); } |
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51 #else |
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52 bool ok (void) const { return false; } |
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53 #endif |
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54 SparseMatrix V (void) const; |
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55 |
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56 ColumnVector Pinv (void) const; |
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57 |
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58 ColumnVector P (void) const; |
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59 |
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60 SparseMatrix R (const bool econ) const; |
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61 |
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62 Matrix C (const Matrix &b) const; |
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63 |
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64 int count; |
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65 |
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66 octave_idx_type nrows; |
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67 #ifdef HAVE_CXSPARSE |
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68 CXSPARSE_DNAME (s) *S; |
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69 |
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70 CXSPARSE_DNAME (n) *N; |
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71 #endif |
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72 }; |
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73 private: |
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74 SparseQR_rep *rep; |
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75 |
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76 public: |
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77 SparseQR (void) : rep (new SparseQR_rep (SparseMatrix(), 0)) { } |
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78 |
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79 SparseQR (const SparseMatrix& a, int order = 0) : |
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80 rep (new SparseQR_rep (a, order)) { } |
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81 |
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82 SparseQR (const SparseQR& a) : rep (a.rep) { rep->count++; } |
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83 |
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84 ~SparseQR (void) |
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85 { |
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86 if (--rep->count <= 0) |
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87 delete rep; |
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88 } |
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89 |
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90 SparseQR& operator = (const SparseQR& a) |
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91 { |
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92 if (this != &a) |
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93 { |
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94 if (--rep->count <= 0) |
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95 delete rep; |
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96 |
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97 rep = a.rep; |
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98 rep->count++; |
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99 } |
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100 return *this; |
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101 } |
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102 |
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103 bool ok (void) const { return rep->ok(); } |
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104 |
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105 SparseMatrix V (void) const { return rep->V(); } |
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106 |
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107 ColumnVector Pinv (void) const { return rep->P(); } |
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108 |
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109 ColumnVector P (void) const { return rep->P(); } |
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110 |
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111 SparseMatrix R (const bool econ = false) const { return rep->R(econ); } |
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112 |
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113 Matrix C (const Matrix &b) const { return rep->C(b); } |
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114 |
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115 friend Matrix qrsolve (const SparseMatrix &a, const Matrix &b, |
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116 octave_idx_type &info); |
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117 |
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118 friend SparseMatrix qrsolve (const SparseMatrix &a, const SparseMatrix &b, |
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119 octave_idx_type &info); |
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120 |
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121 friend ComplexMatrix qrsolve (const SparseMatrix &a, const ComplexMatrix &b, |
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122 octave_idx_type &info); |
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123 |
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124 friend SparseComplexMatrix qrsolve (const SparseMatrix &a, |
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125 const SparseComplexMatrix &b, |
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126 octave_idx_type &info); |
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127 |
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128 protected: |
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129 #ifdef HAVE_CXSPARSE |
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130 CXSPARSE_DNAME (s) * S (void) { return rep->S; } |
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131 |
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132 CXSPARSE_DNAME (n) * N (void) { return rep->N; } |
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133 #endif |
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134 }; |
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135 |
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136 |
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137 // Publish externally used friend functions. |
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138 |
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139 extern Matrix qrsolve (const SparseMatrix &a, const Matrix &b, |
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140 octave_idx_type &info); |
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141 |
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142 extern SparseMatrix qrsolve (const SparseMatrix &a, const SparseMatrix &b, |
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143 octave_idx_type &info); |
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144 |
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145 extern ComplexMatrix qrsolve (const SparseMatrix &a, const ComplexMatrix &b, |
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146 octave_idx_type &info); |
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147 |
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148 extern SparseComplexMatrix qrsolve (const SparseMatrix &a, |
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149 const SparseComplexMatrix &b, |
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150 octave_idx_type &info); |
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151 |
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152 #endif |
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153 |
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154 /* |
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155 ;;; Local Variables: *** |
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156 ;;; mode: C++ *** |
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157 ;;; End: *** |
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158 */ |
