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annotate liboctave/numeric/qr.h @ 22317:6ca3acf5fad8

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move some new numeric classes to namespace octave::math * aepbalance.cc, aepbalance.h, chol.cc, chol.h, gepbalance.cc, gepbalance.h, hess.cc, hess.h, lu.cc, lu.h, qr.cc, qr.h, qrp.cc, qrp.h, schur.cc, schur.h, sparse-chol.cc, sparse-chol.h, sparse-dmsolve.cc,sparse-lu.cc, sparse-lu.h, sparse-qr.cc, sparse-qr.h, svd.cc, svd.h: Move classes to namespace octave::math. * __luinc__.cc, __qp__.cc, balance.cc, hess.cc, lu.cc, qz.cc, schur.cc, sqrtm.cc, svd.cc, chol.cc, dmperm.cc, qr.cc, lex.h, CMatrix.cc, CSparse.cc, dMatrix.cc, dSparse.cc, fCMatrix.cc, fMatrix.cc, eigs-base.cc, oct-norm.cc: Update for new namespaces.
author John W. Eaton <jwe@octave.org>
date Tue, 16 Aug 2016 15:48:22 -0400
parents eb1524b07fe3
children bac0d6f07a3e
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1 /*
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2
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3 Copyright (C) 1994-2015 John W. Eaton
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4 Copyright (C) 2008-2009 Jaroslav Hajek
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5 Copyright (C) 2009 VZLU Prague
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6
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7 This file is part of Octave.
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8
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9 Octave is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published by the
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11 Free Software Foundation; either version 3 of the License, or (at your
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12 option) any later version.
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13
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14 Octave is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with Octave; see the file COPYING. If not, see
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21 <http://www.gnu.org/licenses/>.
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22
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23 */
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24
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25 #if ! defined (octave_qr_h)
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26 #define octave_qr_h 1
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28 #include "octave-config.h"
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29
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30 #include "Array.h"
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32 namespace octave
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33 {
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34 namespace math
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35 {
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36
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37 template <typename T>
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38 class
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39 qr
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40 {
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41 public:
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42
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43 typedef typename T::element_type ELT_T;
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44 typedef typename T::row_vector_type RV_T;
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45 typedef typename T::column_vector_type CV_T;
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46
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47 enum type
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48 {
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49 std,
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50 raw,
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51 economy
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52 };
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53
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54 qr (void) : q (), r () { }
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56 qr (const T& a, type qr_type = qr::std)
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57 : q (), r ()
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58 {
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59 init (a, qr_type);
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60 }
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62 qr (const T& q, const T& r);
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63
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64 qr (const qr& a) : q (a.q), r (a.r) { }
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65
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66 qr& operator = (const qr& a)
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67 {
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68 if (this != &a)
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69 {
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70 q = a.q;
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71 r = a.r;
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72 }
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74 return *this;
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75 }
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77 virtual ~qr (void) { }
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78
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79 T Q (void) const { return q; }
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80
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81 T R (void) const { return r; }
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82
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83 type get_type (void) const;
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84
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85 bool regular (void) const;
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86
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87 void init (const T& a, type qr_type);
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88
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89 void update (const CV_T& u, const CV_T& v);
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90
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91 void update (const T& u, const T& v);
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92
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93 void insert_col (const CV_T& u, octave_idx_type j);
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94
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95 void insert_col (const T& u, const Array<octave_idx_type>& j);
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96
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97 void delete_col (octave_idx_type j);
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98
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99 void delete_col (const Array<octave_idx_type>& j);
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100
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101 void insert_row (const RV_T& u, octave_idx_type j);
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102
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103 void delete_row (octave_idx_type j);
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104
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105 void shift_cols (octave_idx_type i, octave_idx_type j);
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106
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107 protected:
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108
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109 T q;
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110 T r;
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111
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112 void form (octave_idx_type n, T& afact, ELT_T *tau, type qr_type);
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113 };
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114
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115 extern void warn_qrupdate_once (void);
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116
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117 }
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118 }
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119
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120 #endif