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1 // -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993, 1994 John W. Eaton |
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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 2, or (at your option) any |
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11 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, write to the Free |
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20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_DiagMatrix_h) |
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25 #define octave_DiagMatrix_h 1 |
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26 |
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27 #if defined (__GNUG__) |
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28 #pragma interface |
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29 #endif |
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30 |
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31 #include "Array.h" |
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32 |
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33 #include "dRowVector.h" |
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34 #include "dColVector.h" |
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35 |
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36 #include "mx-defs.h" |
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37 |
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38 extern "C++" { |
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39 |
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40 class DiagMatrix : public DiagArray<double> |
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41 { |
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42 friend class SVD; |
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43 friend class ComplexSVD; |
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44 |
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45 public: |
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46 |
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47 DiagMatrix (void) : DiagArray<double> () { } |
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48 DiagMatrix (int n) : DiagArray<double> (n) { } |
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49 DiagMatrix (int n, double val) : DiagArray<double> (n, val) { } |
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50 DiagMatrix (int r, int c) : DiagArray<double> (r, c) { } |
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51 DiagMatrix (int r, int c, double val) : DiagArray<double> (r, c, val) { } |
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52 DiagMatrix (const RowVector& a) : DiagArray<double> (a) { } |
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53 DiagMatrix (const ColumnVector& a) : DiagArray<double> (a) { } |
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54 DiagMatrix (const DiagArray<double>& a) : DiagArray<double> (a) { } |
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55 DiagMatrix (const DiagMatrix& a) : DiagArray<double> (a) { } |
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56 // DiagMatrix (double a) : DiagArray<double> (1, a) { } |
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57 |
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58 DiagMatrix& operator = (const DiagMatrix& a) |
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59 { |
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60 DiagArray<double>::operator = (a); |
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61 return *this; |
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62 } |
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63 |
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64 // operator DiagArray<double>& () const { return *this; } |
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65 |
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66 int operator == (const DiagMatrix& a) const; |
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67 int operator != (const DiagMatrix& a) const; |
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68 |
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69 DiagMatrix& fill (double val); |
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70 DiagMatrix& fill (double val, int beg, int end); |
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71 DiagMatrix& fill (const ColumnVector& a); |
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72 DiagMatrix& fill (const RowVector& a); |
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73 DiagMatrix& fill (const ColumnVector& a, int beg); |
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74 DiagMatrix& fill (const RowVector& a, int beg); |
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75 |
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76 DiagMatrix transpose (void) const; |
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77 |
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78 // resize is the destructive analog for this one |
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79 |
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80 Matrix extract (int r1, int c1, int r2, int c2) const; |
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81 |
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82 // extract row or column i. |
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83 |
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84 RowVector row (int i) const; |
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85 RowVector row (char *s) const; |
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86 |
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87 ColumnVector column (int i) const; |
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88 ColumnVector column (char *s) const; |
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89 |
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90 DiagMatrix inverse (void) const; |
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91 DiagMatrix inverse (int& info) const; |
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92 |
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93 // diagonal matrix by diagonal matrix -> diagonal matrix operations |
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94 |
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95 DiagMatrix& operator += (const DiagMatrix& a); |
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96 DiagMatrix& operator -= (const DiagMatrix& a); |
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97 |
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98 // diagonal matrix by scalar -> matrix operations |
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99 |
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100 friend Matrix operator + (const DiagMatrix& a, double s); |
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101 friend Matrix operator - (const DiagMatrix& a, double s); |
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102 |
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103 friend ComplexMatrix operator + (const DiagMatrix& a, const Complex& s); |
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104 friend ComplexMatrix operator - (const DiagMatrix& a, const Complex& s); |
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105 |
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106 // diagonal matrix by scalar -> diagonal matrix operations |
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107 |
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108 friend ComplexDiagMatrix operator * (const DiagMatrix& a, const Complex& s); |
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109 friend ComplexDiagMatrix operator / (const DiagMatrix& a, const Complex& s); |
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110 |
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111 // scalar by diagonal matrix -> matrix operations |
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112 |
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113 friend Matrix operator + (double s, const DiagMatrix& a); |
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114 friend Matrix operator - (double s, const DiagMatrix& a); |
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115 |
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116 friend ComplexMatrix operator + (const Complex& s, const DiagMatrix& a); |
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117 friend ComplexMatrix operator - (const Complex& s, const DiagMatrix& a); |
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118 |
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119 // scalar by diagonal matrix -> diagonal matrix operations |
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120 |
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121 friend ComplexDiagMatrix operator * (const Complex& s, const DiagMatrix& a); |
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122 |
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123 // diagonal matrix by column vector -> column vector operations |
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124 |
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125 friend ColumnVector operator * (const DiagMatrix& a, const ColumnVector& b); |
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126 |
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127 friend ComplexColumnVector operator * (const DiagMatrix& a, |
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128 const ComplexColumnVector& b); |
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129 |
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130 // diagonal matrix by diagonal matrix -> diagonal matrix operations |
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131 |
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132 friend DiagMatrix operator * (const DiagMatrix& a, |
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133 const DiagMatrix& b); |
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134 |
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135 friend ComplexDiagMatrix operator + (const DiagMatrix& a, |
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136 const ComplexDiagMatrix& b); |
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137 friend ComplexDiagMatrix operator - (const DiagMatrix& a, |
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138 const ComplexDiagMatrix& b); |
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139 friend ComplexDiagMatrix operator * (const DiagMatrix& a, |
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140 const ComplexDiagMatrix& b); |
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141 |
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142 friend ComplexDiagMatrix product (const DiagMatrix& a, |
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143 const ComplexDiagMatrix& b); |
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144 |
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145 // diagonal matrix by matrix -> matrix operations |
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146 |
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147 friend Matrix operator + (const DiagMatrix& a, const Matrix& b); |
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148 friend Matrix operator - (const DiagMatrix& a, const Matrix& b); |
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149 friend Matrix operator * (const DiagMatrix& a, const Matrix& b); |
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150 |
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151 friend ComplexMatrix operator + (const DiagMatrix& a, |
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152 const ComplexMatrix& b); |
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153 friend ComplexMatrix operator - (const DiagMatrix& a, |
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154 const ComplexMatrix& b); |
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155 friend ComplexMatrix operator * (const DiagMatrix& a, |
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156 const ComplexMatrix& b); |
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157 |
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158 // other operations |
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159 |
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160 ColumnVector diag (void) const; |
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161 ColumnVector diag (int k) const; |
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162 |
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163 // i/o |
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164 |
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165 friend ostream& operator << (ostream& os, const DiagMatrix& a); |
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166 |
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167 #define KLUDGE_DIAG_MATRICES |
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168 #define TYPE double |
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169 #define KL_DMAT_TYPE DiagMatrix |
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170 #include "mx-kludge.h" |
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171 #undef KLUDGE_DIAG_MATRICES |
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172 #undef TYPE |
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173 #undef KL_DMAT_TYPE |
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174 |
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175 private: |
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176 |
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177 DiagMatrix (double *d, int nr, int nc) : DiagArray<double> (d, nr, nc) { } |
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178 }; |
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179 |
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180 } // extern "C++" |
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181 |
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182 #endif |
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183 |
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184 /* |
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185 ;;; Local Variables: *** |
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186 ;;; mode: C++ *** |
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187 ;;; page-delimiter: "^/\\*" *** |
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188 ;;; End: *** |
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189 */ |
