Mercurial > hg > octave-lyh
annotate liboctave/DiagArray2.h @ 8314:eb0fb4a9859c
remove unimplemented method declaration
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Wed, 12 Nov 2008 10:24:14 +0100 |
| parents | 82be108cc558 |
| children | 8b1a2555c4e2 |
| rev | line source |
|---|---|
| 1993 | 1 // Template array classes |
| 1988 | 2 /* |
| 3 | |
| 7017 | 4 Copyright (C) 1996, 1997, 2000, 2002, 2003, 2004, 2005, 2006, 2007 |
| 5 John W. Eaton | |
| 1988 | 6 |
| 7 This file is part of Octave. | |
| 8 | |
| 9 Octave is free software; you can redistribute it and/or modify it | |
| 10 under the terms of the GNU General Public License as published by the | |
| 7016 | 11 Free Software Foundation; either version 3 of the License, or (at your |
| 12 option) any later version. | |
| 1988 | 13 |
| 14 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 17 for more details. | |
| 18 | |
| 19 You should have received a copy of the GNU General Public License | |
| 7016 | 20 along with Octave; see the file COPYING. If not, see |
| 21 <http://www.gnu.org/licenses/>. | |
| 1988 | 22 |
| 23 */ | |
| 24 | |
| 25 #if !defined (octave_DiagArray2_h) | |
| 26 #define octave_DiagArray2_h 1 | |
| 27 | |
| 28 #include <cassert> | |
| 29 #include <cstdlib> | |
| 30 | |
| 4645 | 31 #include "Array.h" |
| 1988 | 32 #include "lo-error.h" |
| 33 | |
| 34 class idx_vector; | |
| 35 | |
| 36 // A two-dimensional array with diagonal elements only. | |
| 37 // | |
| 38 // Idea and example code for Proxy class and functions from: | |
| 39 // | |
| 40 // From: kanze@us-es.sel.de (James Kanze) | |
| 41 // Subject: Re: How to overload [] to do READ/WRITE differently ? | |
| 42 // Message-ID: <KANZE.93Nov29151407@slsvhdt.us-es.sel.de> | |
| 43 // Sender: news@us-es.sel.de | |
| 44 // Date: 29 Nov 1993 14:14:07 GMT | |
| 45 // -- | |
| 46 // James Kanze email: kanze@us-es.sel.de | |
| 47 // GABI Software, Sarl., 8 rue du Faisan, F-67000 Strasbourg, France | |
| 48 | |
| 49 template <class T> | |
| 3585 | 50 class |
| 51 DiagArray2 : public Array<T> | |
| 1988 | 52 { |
| 53 private: | |
| 54 | |
| 5275 | 55 T get (octave_idx_type i) { return Array<T>::xelem (i); } |
| 1988 | 56 |
| 5275 | 57 void set (const T& val, octave_idx_type i) { Array<T>::xelem (i) = val; } |
| 1988 | 58 |
| 59 class Proxy | |
| 60 { | |
| 61 public: | |
| 62 | |
| 5275 | 63 Proxy (DiagArray2<T> *ref, octave_idx_type r, octave_idx_type c) |
| 1988 | 64 : i (r), j (c), object (ref) { } |
| 65 | |
| 66 const Proxy& operator = (const T& val) const | |
| 67 { | |
| 68 if (i == j) | |
| 69 { | |
| 70 if (object) | |
| 71 object->set (val, i); | |
| 72 } | |
| 73 else | |
| 74 (*current_liboctave_error_handler) | |
| 75 ("invalid assignment to off-diagonal in diagonal array"); | |
| 76 | |
| 77 return *this; | |
| 78 } | |
| 79 | |
| 80 operator T () const | |
| 81 { | |
| 82 if (object && i == j) | |
| 83 return object->get (i); | |
| 84 else | |
| 85 { | |
| 5260 | 86 static T foo; |
| 1988 | 87 return foo; |
| 88 } | |
| 89 } | |
| 90 | |
| 91 private: | |
| 92 | |
| 5775 | 93 // FIXME -- this is declared private to keep the user from |
| 1988 | 94 // taking the address of a Proxy. Maybe it should be implemented |
| 95 // by means of a companion function in the DiagArray2 class. | |
| 96 | |
| 5760 | 97 T *operator& () const { assert (0); return 0; } |
| 1988 | 98 |
| 5275 | 99 octave_idx_type i; |
| 100 octave_idx_type j; | |
| 1988 | 101 |
| 102 DiagArray2<T> *object; | |
| 103 | |
| 104 }; | |
| 105 | |
| 106 friend class Proxy; | |
| 107 | |
| 108 protected: | |
| 109 | |
| 5275 | 110 DiagArray2 (T *d, octave_idx_type r, octave_idx_type c) : Array<T> (d, r < c ? r : c) |
| 4645 | 111 { Array<T>::dimensions = dim_vector (r, c); } |
| 1988 | 112 |
| 113 public: | |
| 114 | |
| 4513 | 115 DiagArray2 (void) : Array<T> (dim_vector (0, 0)) { } |
| 1988 | 116 |
| 5275 | 117 DiagArray2 (octave_idx_type r, octave_idx_type c) : Array<T> (r < c ? r : c) |
| 4645 | 118 { this->dimensions = dim_vector (r, c); } |
| 1988 | 119 |
| 5275 | 120 DiagArray2 (octave_idx_type r, octave_idx_type c, const T& val) : Array<T> (r < c ? r : c) |
| 1988 | 121 { |
| 4645 | 122 this->dimensions = dim_vector (r, c); |
| 4513 | 123 |
| 5752 | 124 Array<T>::fill (val); |
| 1988 | 125 } |
| 126 | |
| 127 DiagArray2 (const Array<T>& a) : Array<T> (a) | |
| 4645 | 128 { this->dimensions = dim_vector (a.length (), a.length ()); } |
| 1988 | 129 |
| 130 DiagArray2 (const DiagArray2<T>& a) : Array<T> (a) | |
| 4645 | 131 { this->dimensions = a.dims (); } |
| 1988 | 132 |
| 133 ~DiagArray2 (void) { } | |
| 134 | |
| 135 DiagArray2<T>& operator = (const DiagArray2<T>& a) | |
| 136 { | |
| 137 if (this != &a) | |
| 4645 | 138 Array<T>::operator = (a); |
| 1988 | 139 |
| 140 return *this; | |
| 141 } | |
| 142 | |
| 5275 | 143 Proxy elem (octave_idx_type r, octave_idx_type c) |
| 1988 | 144 { |
| 145 return Proxy (this, r, c); | |
| 146 } | |
| 147 | |
| 5275 | 148 Proxy checkelem (octave_idx_type r, octave_idx_type c) |
| 1988 | 149 { |
| 4645 | 150 if (r < 0 || c < 0 || r >= this->dim1 () || c >= this->dim2 ()) |
| 1988 | 151 { |
| 3928 | 152 (*current_liboctave_error_handler) ("range error in DiagArray2"); |
| 1988 | 153 return Proxy (0, r, c); |
| 154 } | |
| 155 else | |
| 156 return Proxy (this, r, c); | |
| 157 } | |
| 158 | |
| 5275 | 159 Proxy operator () (octave_idx_type r, octave_idx_type c) |
| 1988 | 160 { |
| 4645 | 161 if (r < 0 || c < 0 || r >= this->dim1 () || c >= this->dim2 ()) |
| 1988 | 162 { |
| 3928 | 163 (*current_liboctave_error_handler) ("range error in DiagArray2"); |
| 1988 | 164 return Proxy (0, r, c); |
| 165 } | |
| 166 else | |
| 167 return Proxy (this, r, c); | |
| 168 } | |
| 169 | |
| 5275 | 170 T elem (octave_idx_type r, octave_idx_type c) const; |
| 171 T checkelem (octave_idx_type r, octave_idx_type c) const; | |
| 172 T operator () (octave_idx_type r, octave_idx_type c) const; | |
| 1988 | 173 |
| 174 // No checking. | |
| 175 | |
| 5275 | 176 T& xelem (octave_idx_type r, octave_idx_type c); |
| 177 T xelem (octave_idx_type r, octave_idx_type c) const; | |
| 1988 | 178 |
| 5275 | 179 void resize (octave_idx_type n, octave_idx_type m); |
| 180 void resize (octave_idx_type n, octave_idx_type m, const T& val); | |
| 1988 | 181 |
|
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82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
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182 DiagArray2<T> transpose (void) const; |
|
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
183 DiagArray2<T> hermitian (T (*fcn) (const T&) = 0) const; |
| 1988 | 184 }; |
| 185 | |
| 186 #endif | |
| 187 | |
| 188 /* | |
| 189 ;;; Local Variables: *** | |
| 190 ;;; mode: C++ *** | |
| 191 ;;; End: *** | |
| 192 */ |