Mercurial > octave
annotate liboctave/numeric/lu.h @ 27923:bd51beb6205e
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> |
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date | Wed, 08 Jan 2020 11:59:41 -0500 |
parents | 1891570abac8 |
children | 5c14f81e0937 0a5b15007766 |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 1996-2020 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 //////////////////////////////////////////////////////////////////////// |
1991 | 25 |
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26 #if ! defined (octave_lu_h) |
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27 #define octave_lu_h 1 |
1991 | 28 |
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29 #include "octave-config.h" |
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30 |
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31 #include "Array.h" |
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32 |
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33 class ColumnVector; |
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34 class PermMatrix; |
1991 | 35 |
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36 namespace octave |
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37 { |
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38 namespace math |
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39 { |
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40 template <typename T> |
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41 class |
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42 lu |
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43 { |
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44 public: |
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45 |
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46 typedef typename T::column_vector_type VT; |
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47 typedef typename T::element_type ELT_T; |
1991 | 48 |
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49 lu (void) |
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50 : a_fact (), l_fact (), ipvt () { } |
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51 |
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52 lu (const T& a); |
1991 | 53 |
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54 lu (const lu& a) |
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55 : a_fact (a.a_fact), l_fact (a.l_fact), ipvt (a.ipvt) { } |
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56 |
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57 lu (const T& l, const T& u, const PermMatrix& p); |
1991 | 58 |
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59 lu& operator = (const lu& a) |
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60 { |
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61 if (this != &a) |
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62 { |
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63 a_fact = a.a_fact; |
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64 l_fact = a.l_fact; |
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65 ipvt = a.ipvt; |
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66 } |
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67 |
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68 return *this; |
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69 } |
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70 |
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71 virtual ~lu (void) = default; |
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72 |
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73 bool packed (void) const; |
1991 | 74 |
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75 void unpack (void); |
1991 | 76 |
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77 T L (void) const; |
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78 |
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79 T U (void) const; |
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81 T Y (void) const; |
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83 PermMatrix P (void) const; |
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84 |
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85 ColumnVector P_vec (void) const; |
1991 | 86 |
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87 bool regular (void) const; |
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88 |
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89 void update (const VT& u, const VT& 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 update_piv (const VT& u, const VT& v); |
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94 |
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95 void update_piv (const T& u, const T& v); |
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96 |
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97 protected: |
1991 | 98 |
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99 // The result of getp is passed to other Octave Matrix functions, |
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100 // so we use octave_idx_type. |
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101 Array<octave_idx_type> getp (void) const; |
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102 |
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103 T a_fact; |
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104 T l_fact; |
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105 |
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106 // This is internal storage that is passed to Fortran, |
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107 // so we need a Fortran INTEGER. |
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108 Array<octave_f77_int_type> ipvt; |
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109 }; |
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110 } |
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111 } |
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112 |
1991 | 113 #endif |