annotate liboctave/numeric/svd.h @ 22868:87e3163f6c87

use c++11 "= default" syntax for declaration of trivial destructors * make_int.cc, Canvas.h, GenericEventNotify.h, TextEdit.h, gl-select.h, QTerminal.h, files-dock-widget.h, history-dock-widget.h, octave-cmd.h, octave-dock-widget.h, octave-interpreter.h, thread-manager.h, welcome-wizard.h, workspace-model.h, workspace-view.h, base-text-renderer.h, comment-list.h, debug.h, dynamic-ld.cc, dynamic-ld.h, ft-text-renderer.cc, gl-render.h, gl2ps-print.cc, graphics.in.h, hook-fcn.h, input.h, load-path.h, mxarray.in.h, oct-errno.h, oct-fstrm.h, oct-handle.h, oct-iostrm.h, oct-lvalue.h, oct-stdstrm.h, oct-stream.cc, oct-stream.h, oct-strstrm.h, pr-output.cc, procstream.h, sighandlers.cc, symtab.h, text-renderer.h, txt-eng.h, variables.cc, workspace-element.h, __init_fltk__.cc, __init_gnuplot__.cc, ov-base-diag.h, ov-base-int.h, ov-base-scalar.h, ov-base-sparse.h, ov-base.h, ov-bool-mat.h, ov-bool-sparse.h, ov-bool.h, ov-builtin.h, ov-cell.h, ov-ch-mat.h, ov-class.h, ov-classdef.cc, ov-classdef.h, ov-colon.h, ov-complex.cc, ov-complex.h, ov-cs-list.h, ov-cx-diag.h, ov-cx-mat.h, ov-cx-sparse.h, ov-fcn-handle.h, ov-fcn-inline.h, ov-fcn.h, ov-float.h, ov-flt-complex.h, ov-flt-cx-diag.h, ov-flt-cx-mat.h, ov-flt-re-diag.h, ov-flt-re-mat.h, ov-intx.h, ov-lazy-idx.h, ov-re-diag.h, ov-re-mat.h, ov-re-sparse.h, ov-scalar.h, ov-str-mat.h, ov-struct.h, ov-typeinfo.h, ov-usr-fcn.h, ovl.h, octave.h, lex.h, parse.h, pt-binop.h, pt-bp.h, pt-cell.h, pt-check.h, pt-classdef.h, pt-cmd.h, pt-const.h, pt-decl.h, pt-eval.h, pt-exp.h, pt-fcn-handle.h, pt-funcall.h, pt-id.h, pt-jump.h, pt-loop.h, pt-mat.cc, pt-mat.h, pt-misc.h, pt-pr-code.h, pt-unop.h, pt-walk.h, pt.h, DiagArray2.h, MArray.h, MDiagArray2.h, MSparse.h, idx-vector.h, quit.h, CollocWt.h, DAE.h, DAEFunc.h, DAERT.h, DAERTFunc.h, DASPK.h, DASRT.h, DASSL.h, EIG.h, LSODE.h, ODE.h, ODEFunc.h, ODES.h, ODESFunc.h, Quad.h, aepbalance.h, base-dae.h, base-de.h, base-min.h, fEIG.h, gepbalance.h, gsvd.h, hess.h, lu.h, oct-rand.h, oct-spparms.h, qr.h, qrp.h, schur.h, sparse-lu.h, svd.h, child-list.h, file-stat.h, oct-passwd.h, oct-time.h, oct-uname.h, action-container.h, base-list.h, cmd-edit.cc, cmd-edit.h, cmd-hist.cc, cmd-hist.h, glob-match.h, lo-array-errwarn.h, lo-regexp.h, oct-mutex.h, pathsearch.h, str-vec.h, url-transfer.h:
author John W. Eaton <jwe@octave.org>
date Tue, 06 Dec 2016 10:59:29 -0500
parents 3a2b891d0b33
children 5126040e8f49
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1 /*
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2
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3 Copyright (C) 2016 Carnë Draug
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4 Copyright (C) 1994-2016 John W. Eaton
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5
3d4b4f0fa5ba [project @ 1994-06-06 00:33:33 by jwe]
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6 This file is part of Octave.
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7
3d4b4f0fa5ba [project @ 1994-06-06 00:33:33 by jwe]
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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
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10 the Free Software Foundation; either version 3 of the License, or
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11 (at your option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but
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14 WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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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, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #if ! defined (octave_svd_h)
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25 #define octave_svd_h 1
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26
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27 #include "octave-config.h"
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28
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29 #include <vector>
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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 svd
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38 {
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39 public:
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40
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41 typedef typename T::real_diag_matrix_type DM_T;
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42
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43 enum class Type
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44 {
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45 std,
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46 economy,
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47 sigma_only
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48 };
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49
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50 enum class Driver
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51 {
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52 GESVD,
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53 GESDD
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54 };
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55
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56 svd (void)
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57 : m_type (), m_driver (), left_sm (), sigma (), right_sm ()
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58 { }
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59
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60 svd (const T& a, svd::Type type = svd::Type::std,
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61 svd::Driver driver = svd::Driver::GESVD);
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62
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63 svd (const svd& a)
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64 : m_type (a.m_type), m_driver (a.m_driver), left_sm (a.left_sm),
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65 sigma (a.sigma), right_sm (a.right_sm)
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66 { }
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68 svd& operator = (const svd& a)
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69 {
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70 if (this != &a)
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71 {
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72 m_type = a.m_type;
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73 left_sm = a.left_sm;
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74 sigma = a.sigma;
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75 right_sm = a.right_sm;
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76 m_driver = a.m_driver;
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77 }
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78
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79 return *this;
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80 }
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81
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82 ~svd (void) = default;
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83
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84 T left_singular_matrix (void) const;
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85
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86 DM_T singular_values (void) const { return sigma; }
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87
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88 T right_singular_matrix (void) const;
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89
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90 private:
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91
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92 typedef typename T::element_type P;
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93 typedef typename DM_T::element_type DM_P;
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94
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95 svd::Type m_type;
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96 svd::Driver m_driver;
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97
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98 T left_sm;
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99 DM_T sigma;
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100 T right_sm;
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101
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102 void gesvd (char& jobu, char& jobv, octave_idx_type m, octave_idx_type n,
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103 P* tmp_data, octave_idx_type m1, DM_P* s_vec, P* u, P* vt,
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104 octave_idx_type nrow_vt1, std::vector<P>& work,
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105 octave_idx_type& lwork, octave_idx_type& info);
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106
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107 void gesdd (char& jobz, octave_idx_type m, octave_idx_type n,
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108 P* tmp_data, octave_idx_type m1, DM_P* s_vec, P* u, P* vt,
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109 octave_idx_type nrow_vt1, std::vector<P>& work,
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110 octave_idx_type& lwork,
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111 octave_idx_type* iwork, octave_idx_type& info);
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112 };
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113 }
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114 }
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115
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116 #endif
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117