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1 // Template array classes -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1993, 1994, 1995 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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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 the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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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, write to the Free |
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20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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21 |
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22 */ |
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23 |
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24 #if defined (__GNUG__) |
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25 #pragma implementation |
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26 #endif |
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27 |
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28 #ifdef HAVE_CONFIG_H |
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29 #include <config.h> |
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30 #endif |
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31 |
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32 #include <cassert> |
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33 |
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34 #include <iostream.h> |
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35 |
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36 #include "Array.h" |
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37 |
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38 #if defined (HEAVYWEIGHT_INDEXING) |
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39 #include "idx-vector.h" |
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40 #include "Array-idx.h" |
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41 #endif |
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42 |
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43 #include "lo-error.h" |
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44 |
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45 // The real representation of all arrays. |
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46 |
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47 template <class T> |
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48 ArrayRep<T>::ArrayRep (int n) |
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49 { |
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50 len = n; |
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51 data = new T [len]; |
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52 |
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53 #ifdef HEAVYWEIGHT_INDEXING |
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54 idx = 0; |
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55 max_indices = 0; |
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56 idx_count = 0; |
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57 #endif |
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58 } |
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59 |
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60 template <class T> |
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61 ArrayRep<T>::ArrayRep (const ArrayRep<T>& a) |
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62 { |
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63 len = a.len; |
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64 count = a.count; |
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65 |
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66 data = new T [len]; |
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67 for (int i = 0; i < len; i++) |
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68 data[i] = a.data[i]; |
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69 |
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70 #ifdef HEAVYWEIGHT_INDEXING |
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71 max_indices = a.max_indices; |
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72 idx_count = a.idx_count; |
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73 if (a.idx) |
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74 { |
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75 idx_vector *idx = new idx_vector [max_indices]; |
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76 for (int i = 0; i < max_indices; i++) |
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77 idx[i] = a.idx[i]; |
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78 } |
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79 else |
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80 idx = 0; |
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81 #endif |
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82 } |
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83 |
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84 template <class T> |
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85 ArrayRep<T>::~ArrayRep (void) |
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86 { |
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87 delete [] data; |
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88 delete [] idx; |
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89 } |
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90 |
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91 template <class T> |
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92 T& |
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93 ArrayRep<T>::elem (int n) |
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94 { |
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95 return data[n]; |
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96 } |
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97 |
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98 template <class T> |
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99 T |
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100 ArrayRep<T>::elem (int n) const |
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101 { |
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102 return data[n]; |
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103 } |
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104 |
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105 // One dimensional array class. Handles the reference counting for |
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106 // all the derived classes. |
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107 |
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108 template <class T> |
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109 Array<T>::Array (int n, const T& val) |
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110 { |
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111 rep = new ArrayRep<T> (n); |
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112 rep->count = 1; |
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113 for (int i = 0; i < n; i++) |
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114 rep->data[i] = val; |
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115 } |
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116 |
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117 template <class T> |
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118 Array<T>& |
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119 Array<T>::operator = (const Array<T>& a) |
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120 { |
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121 if (this != &a) |
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122 { |
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123 if (--rep->count <= 0) |
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124 delete rep; |
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125 |
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126 rep = a.rep; |
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127 rep->count++; |
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128 } |
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129 return *this; |
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130 } |
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131 |
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132 template <class T> |
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133 T& |
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134 Array<T>::checkelem (int n) |
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135 { |
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136 if (n < 0 || n >= rep->length ()) |
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137 { |
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138 (*current_liboctave_error_handler) ("range error"); |
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139 static T foo; |
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140 return foo; |
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141 } |
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142 return elem (n); |
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143 } |
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144 |
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145 template <class T> |
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146 T |
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147 Array<T>::elem (int n) const |
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148 { |
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149 return rep->elem (n); |
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150 } |
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151 |
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152 template <class T> |
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153 T |
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154 Array<T>::checkelem (int n) const |
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155 { |
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156 if (n < 0 || n >= rep->length ()) |
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157 { |
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158 (*current_liboctave_error_handler) ("range error"); |
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254
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159 T foo; |
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160 static T *bar = &foo; |
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254
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161 return foo; |
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162 } |
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163 return elem (n); |
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164 } |
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165 |
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166 template <class T> |
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167 T |
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168 Array<T>::operator () (int n) const |
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169 { |
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170 return checkelem (n); |
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171 } |
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172 |
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173 template <class T> |
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174 void |
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175 Array<T>::resize (int n) |
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176 { |
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177 if (n < 0) |
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178 { |
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179 (*current_liboctave_error_handler) ("can't resize to negative dimension"); |
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180 return; |
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181 } |
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182 |
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183 if (n == length ()) |
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184 return; |
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185 |
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186 ArrayRep<T> *old_rep = rep; |
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187 const T *old_data = data (); |
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188 int old_len = length (); |
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189 |
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190 rep = new ArrayRep<T> (n); |
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191 rep->count = 1; |
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192 |
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193 SET_MAX_INDICES (1); |
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194 |
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195 if (old_data && old_len > 0) |
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196 { |
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197 int min_len = old_len < n ? old_len : n; |
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198 |
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199 for (int i = 0; i < min_len; i++) |
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200 xelem (i) = old_data[i]; |
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201 } |
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202 |
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203 if (--old_rep->count <= 0) |
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204 delete old_rep; |
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205 } |
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206 |
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207 template <class T> |
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208 void |
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209 Array<T>::resize (int n, const T& val) |
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210 { |
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211 if (n < 0) |
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212 { |
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213 (*current_liboctave_error_handler) ("can't resize to negative dimension"); |
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237
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214 return; |
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215 } |
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216 |
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217 if (n == length ()) |
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218 return; |
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219 |
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220 ArrayRep<T> *old_rep = rep; |
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221 const T *old_data = data (); |
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222 int old_len = length (); |
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223 |
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224 rep = new ArrayRep<T> (n); |
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225 rep->count = 1; |
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226 |
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227 SET_MAX_INDICES (1); |
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228 |
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229 int min_len = old_len < n ? old_len : n; |
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230 |
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231 if (old_data && old_len > 0) |
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232 { |
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233 for (int i = 0; i < min_len; i++) |
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234 xelem (i) = old_data[i]; |
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235 } |
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236 |
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237 for (int i = old_len; i < n; i++) |
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238 xelem (i) = val; |
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239 |
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240 if (--old_rep->count <= 0) |
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241 delete old_rep; |
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242 } |
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243 |
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244 template <class T> |
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245 T * |
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246 Array<T>::fortran_vec (void) |
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247 { |
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248 if (rep->count > 1) |
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249 { |
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250 --rep->count; |
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251 rep = new ArrayRep<T> (*rep); |
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252 rep->count = 1; |
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253 } |
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254 return rep->data; |
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255 } |
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256 |
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257 // Two dimensional array class. |
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258 |
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259 template <class T> |
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260 T& |
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261 Array2<T>::checkelem (int i, int j) |
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262 { |
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254
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263 if (i < 0 || j < 0 || i >= d1 || j >= d2) |
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264 { |
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265 (*current_liboctave_error_handler) ("range error"); |
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266 static T foo; |
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267 return foo; |
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268 } |
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269 return Array<T>::elem (d1*j+i); |
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270 } |
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271 |
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272 template <class T> |
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273 T |
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274 Array2<T>::elem (int i, int j) const |
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275 { |
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276 return Array<T>::elem (d1*j+i); |
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277 } |
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278 |
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279 template <class T> |
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280 T |
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281 Array2<T>::checkelem (int i, int j) const |
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282 { |
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254
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283 if (i < 0 || j < 0 || i >= d1 || j >= d2) |
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284 { |
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285 (*current_liboctave_error_handler) ("range error"); |
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286 T foo; |
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287 static T *bar = &foo; |
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288 return foo; |
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289 } |
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290 return Array<T>::elem (d1*j+i); |
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291 } |
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292 |
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293 template <class T> |
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294 T |
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295 Array2<T>::operator () (int i, int j) const |
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296 { |
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297 if (i < 0 || j < 0 || i >= d1 || j >= d2) |
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298 { |
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299 (*current_liboctave_error_handler) ("range error"); |
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300 T foo; |
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301 static T *bar = &foo; |
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302 return foo; |
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303 } |
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304 return Array<T>::elem (d1*j+i); |
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305 } |
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306 |
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307 template <class T> |
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308 void |
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309 Array2<T>::resize (int r, int c) |
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310 { |
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311 if (r < 0 || c < 0) |
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312 { |
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313 (*current_liboctave_error_handler) ("can't resize to negative dimension"); |
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314 return; |
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315 } |
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316 |
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317 if (r == dim1 () && c == dim2 ()) |
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318 return; |
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319 |
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320 ArrayRep<T> *old_rep = rep; |
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321 const T *old_data = data (); |
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322 |
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323 int old_d1 = dim1 (); |
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324 int old_d2 = dim2 (); |
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325 int old_len = length (); |
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326 |
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327 rep = new ArrayRep<T> (r*c); |
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328 rep->count = 1; |
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329 |
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330 SET_MAX_INDICES (2); |
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331 |
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332 d1 = r; |
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333 d2 = c; |
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334 |
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335 if (old_data && old_len > 0) |
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336 { |
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337 int min_r = old_d1 < r ? old_d1 : r; |
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338 int min_c = old_d2 < c ? old_d2 : c; |
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339 |
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340 for (int j = 0; j < min_c; j++) |
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341 for (int i = 0; i < min_r; i++) |
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342 xelem (i, j) = old_data[old_d1*j+i]; |
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343 } |
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344 |
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345 if (--old_rep->count <= 0) |
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346 delete old_rep; |
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347 } |
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348 |
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349 template <class T> |
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350 void |
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351 Array2<T>::resize (int r, int c, const T& val) |
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352 { |
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353 if (r < 0 || c < 0) |
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354 { |
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355 (*current_liboctave_error_handler) ("can't resize to negative dimension"); |
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237
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356 return; |
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357 } |
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358 |
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359 if (r == dim1 () && c == dim2 ()) |
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360 return; |
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361 |
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362 ArrayRep<T> *old_rep = rep; |
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363 const T *old_data = data (); |
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364 int old_d1 = dim1 (); |
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365 int old_d2 = dim2 (); |
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366 int old_len = length (); |
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367 |
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368 rep = new ArrayRep<T> (r*c); |
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369 rep->count = 1; |
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370 |
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371 SET_MAX_INDICES (2); |
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372 |
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373 d1 = r; |
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374 d2 = c; |
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375 |
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376 int min_r = old_d1 < r ? old_d1 : r; |
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377 int min_c = old_d2 < c ? old_d2 : c; |
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378 |
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379 if (old_data && old_len > 0) |
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380 { |
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381 for (int j = 0; j < min_c; j++) |
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382 for (int i = 0; i < min_r; i++) |
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383 xelem (i, j) = old_data[old_d1*j+i]; |
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384 } |
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385 |
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386 for (int j = 0; j < min_c; j++) |
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387 for (int i = min_r; i < r; i++) |
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388 xelem (i, j) = val; |
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389 |
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390 for (int j = min_c; j < c; j++) |
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391 for (int i = 0; i < r; i++) |
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392 xelem (i, j) = val; |
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393 |
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394 if (--old_rep->count <= 0) |
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395 delete old_rep; |
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396 } |
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397 |
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398 template <class T> |
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399 Array2<T>& |
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400 Array2<T>::insert (const Array2<T>& a, int r, int c) |
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401 { |
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402 int a_rows = a.rows (); |
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403 int a_cols = a.cols (); |
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404 if (r < 0 || r + a_rows - 1 > rows () |
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405 || c < 0 || c + a_cols - 1 > cols ()) |
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406 { |
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407 (*current_liboctave_error_handler) ("range error for insert"); |
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408 return *this; |
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409 } |
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410 |
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411 for (int j = 0; j < a_cols; j++) |
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412 for (int i = 0; i < a_rows; i++) |
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413 elem (r+i, c+j) = a.elem (i, j); |
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414 |
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415 return *this; |
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416 } |
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417 |
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418 // Three dimensional array class. |
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237
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419 |
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420 template <class T> |
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421 T& |
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422 Array3<T>::checkelem (int i, int j, int k) |
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423 { |
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254
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424 if (i < 0 || j < 0 || k < 0 || i >= d1 || j >= d2 || k >= d3) |
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425 { |
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426 (*current_liboctave_error_handler) ("range error"); |
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427 static T foo; |
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428 return foo; |
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429 } |
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430 return Array2<T>::elem (i, d1*k+j); |
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237
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431 } |
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432 |
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433 template <class T> |
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434 T |
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435 Array3<T>::elem (int i, int j, int k) const |
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436 { |
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437 return Array2<T>::elem (i, d2*k+j); |
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438 } |
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439 |
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440 template <class T> |
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441 T |
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442 Array3<T>::checkelem (int i, int j, int k) const |
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443 { |
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254
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444 if (i < 0 || j < 0 || k < 0 || i >= d1 || j >= d2 || k >= d3) |
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445 { |
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446 (*current_liboctave_error_handler) ("range error"); |
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447 T foo; |
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448 static T *bar = &foo; |
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254
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449 return foo; |
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450 } |
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451 return Array2<T>::elem (i, d1*k+j); |
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237
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452 } |
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453 |
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454 template <class T> |
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455 T |
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456 Array3<T>::operator () (int i, int j, int k) const |
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457 { |
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254
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458 if (i < 0 || j < 0 || k < 0 || i >= d1 || j >= d2 || k >= d3) |
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459 { |
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460 (*current_liboctave_error_handler) ("range error"); |
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461 T foo; |
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462 static T *bar = &foo; |
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254
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463 return foo; |
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464 } |
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465 return Array2<T>::elem (i, d2*k+j); |
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237
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466 } |
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467 |
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468 template <class T> |
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469 void |
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470 Array3<T>::resize (int n, int m, int k) |
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471 { |
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1360
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472 assert (0); // XXX FIXME XXX |
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237
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473 } |
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474 |
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475 template <class T> |
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476 void |
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477 Array3<T>::resize (int n, int m, int k, const T& val) |
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478 { |
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1360
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479 assert (0); // XXX FIXME XXX |
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237
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480 } |
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481 |
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1360
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482 // A two-dimensional array with diagonal elements only. |
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237
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483 |
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880
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484 #if 1 |
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344
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485 template <class T> |
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486 T& |
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487 DiagArray<T>::elem (int r, int c) |
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488 { |
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489 static T foo (0); |
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490 return (r == c) ? Array<T>::elem (r) : foo; |
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491 } |
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492 |
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493 template <class T> |
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494 T& |
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495 DiagArray<T>::checkelem (int r, int c) |
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496 { |
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497 static T foo (0); |
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498 if (r < 0 || c < 0 || r >= nr || c >= nc) |
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499 { |
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500 (*current_liboctave_error_handler) ("range error"); |
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501 return foo; |
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502 } |
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503 return (r == c) ? Array<T>::elem (r) : foo; |
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504 } |
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505 |
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506 template <class T> |
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507 T& |
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508 DiagArray<T>::operator () (int r, int c) |
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509 { |
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510 static T foo (0); |
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511 if (r < 0 || c < 0 || r >= nr || c >= nc) |
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512 { |
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513 (*current_liboctave_error_handler) ("range error"); |
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514 return foo; |
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515 } |
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516 return (r == c) ? Array<T>::elem (r) : foo; |
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517 } |
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347
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518 #endif |
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344
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519 |
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237
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520 template <class T> |
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521 T& |
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522 DiagArray<T>::xelem (int r, int c) |
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523 { |
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524 static T foo (0); |
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525 return (r == c) ? Array<T>::xelem (r) : foo; |
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526 } |
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527 |
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528 template <class T> |
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529 T |
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530 DiagArray<T>::elem (int r, int c) const |
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531 { |
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532 return (r == c) ? Array<T>::elem (r) : T (0); |
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533 } |
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534 |
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535 template <class T> |
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536 T |
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537 DiagArray<T>::checkelem (int r, int c) const |
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538 { |
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254
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539 if (r < 0 || c < 0 || r >= nr || c >= nc) |
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540 { |
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541 (*current_liboctave_error_handler) ("range error"); |
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542 T foo; |
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1470
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543 static T *bar = &foo; |
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254
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544 return foo; |
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545 } |
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546 return (r == c) ? Array<T>::elem (r) : T (0); |
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237
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547 } |
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548 |
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549 template <class T> |
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550 T |
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551 DiagArray<T>::operator () (int r, int c) const |
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552 { |
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254
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553 if (r < 0 || c < 0 || r >= nr || c >= nc) |
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554 { |
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555 (*current_liboctave_error_handler) ("range error"); |
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556 T foo; |
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1470
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557 static T *bar = &foo; |
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254
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558 return foo; |
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559 } |
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560 return (r == c) ? Array<T>::elem (r) : T (0); |
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237
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561 } |
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562 |
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563 template <class T> |
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564 void |
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565 DiagArray<T>::resize (int r, int c) |
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566 { |
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567 if (r < 0 || c < 0) |
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568 { |
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1560
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569 (*current_liboctave_error_handler) ("can't resize to negative dimensions"); |
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237
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570 return; |
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571 } |
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572 |
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573 if (r == dim1 () && c == dim2 ()) |
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574 return; |
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575 |
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576 ArrayRep<T> *old_rep = rep; |
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577 const T *old_data = data (); |
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578 int old_len = length (); |
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579 |
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580 int new_len = r < c ? r : c; |
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581 |
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582 rep = new ArrayRep<T> (new_len); |
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583 rep->count = 1; |
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584 |
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1560
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585 SET_MAX_INDICES (2); |
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586 |
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237
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587 nr = r; |
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588 nc = c; |
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589 |
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590 if (old_data && old_len > 0) |
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591 { |
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592 int min_len = old_len < new_len ? old_len : new_len; |
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593 |
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594 for (int i = 0; i < min_len; i++) |
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595 xelem (i, i) = old_data[i]; |
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596 } |
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597 |
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598 if (--old_rep->count <= 0) |
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599 delete old_rep; |
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600 } |
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601 |
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602 template <class T> |
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603 void |
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604 DiagArray<T>::resize (int r, int c, const T& val) |
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605 { |
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606 if (r < 0 || c < 0) |
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607 { |
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1560
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608 (*current_liboctave_error_handler) ("can't resize to negative dimensions"); |
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237
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609 return; |
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610 } |
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611 |
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612 if (r == dim1 () && c == dim2 ()) |
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613 return; |
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614 |
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615 ArrayRep<T> *old_rep = rep; |
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616 const T *old_data = data (); |
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617 int old_len = length (); |
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618 |
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619 int new_len = r < c ? r : c; |
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620 |
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621 rep = new ArrayRep<T> (new_len); |
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622 rep->count = 1; |
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623 |
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1560
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624 SET_MAX_INDICES (2); |
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625 |
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237
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626 nr = r; |
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627 nc = c; |
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628 |
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629 int min_len = old_len < new_len ? old_len : new_len; |
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630 |
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631 if (old_data && old_len > 0) |
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632 { |
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633 for (int i = 0; i < min_len; i++) |
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634 xelem (i, i) = old_data[i]; |
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635 } |
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636 |
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637 for (int i = min_len; i < new_len; i++) |
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638 xelem (i, i) = val; |
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639 |
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640 if (--old_rep->count <= 0) |
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641 delete old_rep; |
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642 } |
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643 |
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644 /* |
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645 ;;; Local Variables: *** |
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646 ;;; mode: C++ *** |
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647 ;;; page-delimiter: "^/\\*" *** |
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648 ;;; End: *** |
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649 */ |
