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update formatting of copyright notices * Use <https://octave.org/copyright/> instead of <https://octave.org/COPYRIGHT.html/>. * For consistency with other comments in the Octave sources, use C++-style comments for copyright blocks in C and C++ files. * Use delimiters above and below copyright blocks that are appropriate for the language used in the file. * Eliminate extra spacing inside copyright blocks. * lex.ll (looks_like_copyright): Also allow newlines and carriage returns before the word "Copyright". * scripts/mk-doc.pl (gethelp): Also skip empty comment lines. * bp-table.cc, type.m: Adjust tests.
author John W. Eaton <jwe@octave.org>
date Wed, 08 Jan 2020 11:59:41 -0500
parents 1891570abac8
children 5c14f81e0937 0a5b15007766
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27923
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1997-2020 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 gsvd
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38 {
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39 public:
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40
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41 enum class Type
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42 {
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43 std,
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44 economy,
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45 sigma_only
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46 };
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47
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48 gsvd (void) : sigmaA (), sigmaB (), left_smA (), left_smB (), right_sm ()
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49 { }
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50
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51 gsvd (const T& a, const T& b,
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52 gsvd::Type gsvd_type = gsvd<T>::Type::economy);
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53
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54 gsvd (const gsvd& a)
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55 : type (a.type),
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56 sigmaA (a.sigmaA), sigmaB (a.sigmaB),
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57 left_smA (a.left_smA), left_smB (a.left_smB), right_sm (a.right_sm),
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58 R(a.R) { }
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59
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60 gsvd& operator = (const gsvd& a)
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61 {
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62 if (this != &a)
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63 {
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64 type = a.type;
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65 sigmaA = a.sigmaA;
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66 sigmaB = a.sigmaB;
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67 left_smA = a.left_smA;
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68 left_smB = a.left_smB;
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69 right_sm = a.right_sm;
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70 R = a.R;
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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_diag_matrix_type
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79 singular_values_A (void) const { return sigmaA; }
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80
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81 typename T::real_diag_matrix_type
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82 singular_values_B (void) const { return 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 T R_matrix (void) const;
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89
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90 private:
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91 typedef typename T::value_type P;
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92 typedef typename T::real_matrix_type real_matrix;
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93
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94 gsvd::Type type;
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95 typename T::real_diag_matrix_type sigmaA, sigmaB;
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96 T left_smA, left_smB;
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97 T right_sm, R;
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98
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99 void ggsvd (char& jobu, char& jobv, char& jobq, octave_f77_int_type m,
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100 octave_f77_int_type n, octave_f77_int_type p,
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101 octave_f77_int_type& k, octave_f77_int_type& l,
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102 P *tmp_dataA, octave_f77_int_type m1,
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103 P *tmp_dataB, octave_f77_int_type p1,
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104 real_matrix& alpha, real_matrix& beta,
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105 P *u, octave_f77_int_type nrow_u,
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106 P *v, octave_f77_int_type nrow_v,
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107 P *q, octave_f77_int_type nrow_q,
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108 T& work, octave_f77_int_type lwork,
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109 octave_f77_int_type *iwork,
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110 octave_f77_int_type& info);
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111 };
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112 }
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113 }
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114
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115 #endif