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annotate liboctave/numeric/aepbalance.h @ 33636:3ec6fcce7715 default tip @

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gui: Avoid using HAVE_QSCINTILLA in more header files. * gui-settings.h, settings-dialog.h: Don't include QScintilla header. Forward-declare QSciLexer class instead if necessary. Declare all member functions unconditionally. * gui-settings.cc (gui_settings::get_valid_lexer_styles, gui_settings::read_lexer_settings), settings-dialog.cc (settings_dialog::update_lexer, settings_dialog::get_lexer_settings, settings_dialog::write_lexer_settings): Define functions unconditionally. * gui-preferences-ed.h: Don't include QScintilla header. Remove definition of local variable os_eol_mode from header. * gui-preferences-ed.cc (os_eol_mode): Move definition of local variable here.
author Markus Mützel <markus.muetzel@gmx.de>
date Tue, 28 May 2024 14:54:58 +0200
parents 4b601ca024d5
children
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1994-2024 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_aepbalance_h)
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27 #define octave_aepbalance_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 #include <algorithm>
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32
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33 OCTAVE_BEGIN_NAMESPACE(octave)
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34
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35 OCTAVE_BEGIN_NAMESPACE(math)
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36
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37 template <typename MT>
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38 class aepbalance
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39 {
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40 public:
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41
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42 typedef typename MT::real_column_vector_type VT;
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43
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44 aepbalance () : m_balanced_mat (), m_scale (), m_ilo (), m_ihi (), m_job () { }
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45
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46 OCTAVE_API aepbalance (const MT& a, bool noperm = false, bool noscal = false);
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47
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48 aepbalance (const aepbalance& a)
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49 : m_balanced_mat (a.m_balanced_mat), m_scale (a.m_scale),
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50 m_ilo(a.m_ilo), m_ihi(a.m_ihi), m_job(a.m_job)
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51 { }
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52
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53 aepbalance& operator = (const aepbalance& a)
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54 {
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55 if (this != &a)
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56 {
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57 m_balanced_mat = a.m_balanced_mat;
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58 m_scale = a.m_scale;
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59 m_ilo = a.m_ilo;
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60 m_ihi = a.m_ihi;
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61 m_job = a.m_job;
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62 }
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63
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64 return *this;
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65 }
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66
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67 virtual ~aepbalance () = default;
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68
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69 OCTAVE_API MT balancing_matrix () const;
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70
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71 MT balanced_matrix () const
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72 {
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73 return m_balanced_mat;
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74 }
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75
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76 VT permuting_vector () const
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77 {
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78 octave_idx_type n = m_balanced_mat.rows ();
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79
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80 VT pv (n);
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81
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82 for (octave_idx_type i = 0; i < n; i++)
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83 pv(i) = i+1;
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84
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85 for (octave_idx_type i = n-1; i >= m_ihi; i--)
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86 {
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87 octave_idx_type j = m_scale(i) - 1;
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88 std::swap (pv(i), pv(j));
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89 }
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90
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91 for (octave_idx_type i = 0; i < m_ilo-1; i++)
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92 {
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93 octave_idx_type j = m_scale(i) - 1;
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94 std::swap (pv(i), pv(j));
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95 }
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96
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97 return pv;
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98 }
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99
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100 VT scaling_vector () const
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101 {
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102 octave_idx_type n = m_balanced_mat.rows ();
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103
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104 VT scv (n);
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105
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106 for (octave_idx_type i = 0; i < m_ilo-1; i++)
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107 scv(i) = 1;
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108
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109 for (octave_idx_type i = m_ilo-1; i < m_ihi; i++)
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110 scv(i) = m_scale(i);
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111
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112 for (octave_idx_type i = m_ihi; i < n; i++)
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113 scv(i) = 1;
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114
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115 return scv;
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116 }
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117
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118 protected:
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119
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120 MT m_balanced_mat;
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121 VT m_scale;
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122 octave_idx_type m_ilo;
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123 octave_idx_type m_ihi;
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124 char m_job;
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125 };
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126
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127 OCTAVE_END_NAMESPACE(math)
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128 OCTAVE_END_NAMESPACE(octave)
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129
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130 #endif