Mercurial > octave
annotate liboctave/numeric/gsvd.h @ 30564:796f54d4ddbf stable
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2021.
In all .txi and .texi files except gpl.txi and gpl.texi in the
doc/liboctave and doc/interpreter directories, change the copyright
to "Octave Project Developers", the same as used for other source
files. Update copyright notices for 2022 (not done since 2019). For
gpl.txi and gpl.texi, change the copyright notice to be "Free Software
Foundation, Inc." and leave the date at 2007 only because this file
only contains the text of the GPL, not anything created by the Octave
Project Developers.
Add Paul Thomas to contributors.in.
author | John W. Eaton <jwe@octave.org> |
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date | Tue, 28 Dec 2021 18:22:40 -0500 |
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children | e88a07dec498 |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 1997-2022 The Octave Project Developers |
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4 // |
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5 // See the file COPYRIGHT.md in the top-level directory of this |
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6 // distribution or <https://octave.org/copyright/>. |
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7 // |
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8 // This file is part of Octave. |
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9 // |
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10 // Octave is free software: you can redistribute it and/or modify it |
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11 // under the terms of the GNU General Public License as published by |
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12 // the Free Software Foundation, either version 3 of the License, or |
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13 // (at your option) any later version. |
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14 // |
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15 // Octave is distributed in the hope that it will be useful, but |
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 // GNU General Public License for more details. |
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19 // |
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20 // You should have received a copy of the GNU General Public License |
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21 // along with Octave; see the file COPYING. If not, see |
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22 // <https://www.gnu.org/licenses/>. |
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23 // |
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24 //////////////////////////////////////////////////////////////////////// |
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25 |
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26 #if ! defined (octave_gsvd_h) |
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27 #define octave_gsvd_h 1 |
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28 |
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29 #include "octave-config.h" |
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30 |
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31 namespace octave |
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32 { |
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33 namespace math |
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34 { |
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35 template <typename T> |
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36 class |
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37 OCTAVE_API |
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38 gsvd |
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39 { |
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40 public: |
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41 |
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42 enum class Type |
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43 { |
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44 std, |
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45 economy, |
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46 sigma_only |
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47 }; |
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48 |
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49 gsvd (void) : m_sigmaA (), m_sigmaB (), m_left_smA (), m_left_smB (), m_right_sm () |
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50 { } |
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51 |
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52 gsvd (const T& a, const T& b, |
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53 gsvd::Type gsvd_type = gsvd<T>::Type::std); |
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54 |
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55 gsvd (const gsvd& a) |
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56 : m_type (a.m_type), |
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57 m_sigmaA (a.m_sigmaA), m_sigmaB (a.m_sigmaB), |
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58 m_left_smA (a.m_left_smA), m_left_smB (a.m_left_smB), m_right_sm (a.m_right_sm) |
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59 { } |
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60 |
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61 gsvd& operator = (const gsvd& a) |
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62 { |
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63 if (this != &a) |
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64 { |
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65 m_type = a.m_type; |
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66 m_sigmaA = a.m_sigmaA; |
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67 m_sigmaB = a.m_sigmaB; |
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68 m_left_smA = a.m_left_smA; |
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69 m_left_smB = a.m_left_smB; |
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70 m_right_sm = a.m_right_sm; |
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71 } |
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72 |
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73 return *this; |
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74 } |
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75 |
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76 ~gsvd (void) = default; |
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77 |
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78 typename T::real_matrix_type |
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79 singular_values_A (void) const { return m_sigmaA; } |
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80 |
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81 typename T::real_matrix_type |
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82 singular_values_B (void) const { return m_sigmaB; } |
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83 |
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84 T left_singular_matrix_A (void) const; |
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85 T left_singular_matrix_B (void) const; |
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86 |
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87 T right_singular_matrix (void) const; |
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88 |
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89 private: |
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90 typedef typename T::value_type P; |
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91 typedef typename T::real_matrix_type real_matrix; |
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92 |
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93 void ggsvd (char& jobu, char& jobv, char& jobq, octave_f77_int_type m, |
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94 octave_f77_int_type n, octave_f77_int_type p, |
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95 octave_f77_int_type& k, octave_f77_int_type& l, |
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96 P *tmp_dataA, octave_f77_int_type m1, |
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97 P *tmp_dataB, octave_f77_int_type p1, |
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98 real_matrix& alpha, real_matrix& beta, |
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99 P *u, octave_f77_int_type nrow_u, |
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100 P *v, octave_f77_int_type nrow_v, |
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101 P *q, octave_f77_int_type nrow_q, |
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102 P *work, octave_f77_int_type lwork, |
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103 octave_f77_int_type *iwork, |
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104 octave_f77_int_type& info); |
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105 |
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106 //-------- |
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107 |
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108 gsvd::Type m_type; |
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109 real_matrix m_sigmaA, m_sigmaB; |
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110 T m_left_smA, m_left_smB; |
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111 T m_right_sm; |
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112 }; |
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113 } |
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Carnë Draug <carandraug@octave.org>
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114 } |
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115 |
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116 #endif |