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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_ComplexSVD_h) |
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25 #define octave_ComplexSVD_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 class ostream; |
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32 |
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33 #include "dDiagMatrix.h" |
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34 #include "CMatrix.h" |
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35 #include "dbleSVD.h" |
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36 |
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37 extern "C++" { |
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38 |
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39 class ComplexSVD |
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40 { |
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41 friend class ComplexMatrix; |
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42 |
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43 public: |
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44 |
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45 ComplexSVD (void) {} |
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46 |
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47 ComplexSVD (const ComplexMatrix& a, SVD::type svd_type = SVD::std); |
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48 ComplexSVD (const ComplexMatrix& a, int& info, |
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49 SVD::type svd_type = SVD::std); |
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50 |
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51 ComplexSVD (const ComplexSVD& a); |
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52 |
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53 ComplexSVD& operator = (const ComplexSVD& a); |
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54 |
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55 DiagMatrix singular_values (void) const; |
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56 ComplexMatrix left_singular_matrix (void) const; |
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57 ComplexMatrix right_singular_matrix (void) const; |
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58 |
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59 friend ostream& operator << (ostream& os, const ComplexSVD& a); |
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60 |
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61 private: |
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62 |
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63 int init (const ComplexMatrix& a, SVD::type svd_type = SVD::std); |
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64 |
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65 DiagMatrix sigma; |
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66 ComplexMatrix left_sm; |
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67 ComplexMatrix right_sm; |
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68 }; |
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69 |
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70 inline ComplexSVD::ComplexSVD (const ComplexMatrix& a, SVD::type svd_type) |
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71 { |
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72 init (a, svd_type); |
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73 } |
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74 |
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75 inline ComplexSVD::ComplexSVD (const ComplexMatrix& a, int& info, |
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76 SVD::type svd_type) |
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77 { |
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78 info = init (a, svd_type); |
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79 } |
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80 |
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81 inline ComplexSVD::ComplexSVD (const ComplexSVD& a) |
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82 { |
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83 sigma = a.sigma; |
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84 left_sm = a.left_sm; |
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85 right_sm = a.right_sm; |
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86 } |
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87 |
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88 inline ComplexSVD& |
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89 ComplexSVD::operator = (const ComplexSVD& a) |
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90 { |
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91 sigma = a.sigma; |
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92 left_sm = a.left_sm; |
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93 right_sm = a.right_sm; |
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94 |
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95 return *this; |
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96 } |
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97 |
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98 inline DiagMatrix ComplexSVD::singular_values (void) const |
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99 { |
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100 return sigma; |
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101 } |
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102 |
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103 inline ComplexMatrix ComplexSVD::left_singular_matrix (void) const |
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104 { |
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105 return left_sm; |
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106 } |
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107 |
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108 inline ComplexMatrix ComplexSVD::right_singular_matrix (void) const |
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109 { |
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110 return right_sm; |
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111 } |
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112 |
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113 } // extern "C++" |
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114 |
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115 #endif |
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116 |
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117 /* |
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118 ;;; Local Variables: *** |
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119 ;;; mode: C++ *** |
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120 ;;; page-delimiter: "^/\\*" *** |
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121 ;;; End: *** |
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122 */ |
