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annotate liboctave/Array.h @ 8531:b01fef323c24

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add some explaining comments
author Jaroslav Hajek <highegg@gmail.com>
date Sat, 17 Jan 2009 16:33:30 +0100
parents 937921654627
children ea8e65ca234f
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1 // Template array classes
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2 /*
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3
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4 Copyright (C) 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002, 2003,
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5 2004, 2005, 2006, 2007 John W. Eaton
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6 Copyright (C) 2008, 2009 Jaroslav Hajek <highegg@gmail.com>
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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 the
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12 Free Software Foundation; either version 3 of the License, or (at your
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13 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 WITHOUT
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16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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18 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 <http://www.gnu.org/licenses/>.
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23
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24 */
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25
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26 #if !defined (octave_Array_h)
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27 #define octave_Array_h 1
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28
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29 #include <cassert>
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30 #include <cstddef>
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31
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32 #include <iostream>
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33 #include <algorithm>
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34
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35 #include "dim-vector.h"
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36 #include "idx-vector.h"
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37 #include "lo-utils.h"
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38 #include "oct-sort.h"
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39 #include "quit.h"
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40
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41 // One dimensional array class. Handles the reference counting for
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42 // all the derived classes.
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43
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44 template <class T>
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45 class
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46 Array
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47 {
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48 protected:
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49
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50 //--------------------------------------------------------------------
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51 // The real representation of all arrays.
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52 //--------------------------------------------------------------------
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53
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54 class ArrayRep
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55 {
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56 public:
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57
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58 T *data;
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59 octave_idx_type len;
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60 int count;
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61
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62 ArrayRep (T *d, octave_idx_type l, bool copy = false)
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63 : data (copy ? new T [l] : d), len (l), count (1)
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64 {
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65 if (copy)
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66 std::copy (d, d + l, data);
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67 }
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68
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69 ArrayRep (void) : data (0), len (0), count (1) { }
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70
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71 explicit ArrayRep (octave_idx_type n) : data (new T [n]), len (n), count (1) { }
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72
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73 explicit ArrayRep (octave_idx_type n, const T& val)
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74 : data (new T [n]), len (n), count (1)
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75 {
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76 std::fill (data, data + n, val);
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77 }
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78
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79 ArrayRep (const ArrayRep& a)
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80 : data (new T [a.len]), len (a.len), count (1)
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81 {
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82 std::copy (a.data, a.data + a.len, data);
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83 }
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84
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85 ~ArrayRep (void) { delete [] data; }
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86
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87 octave_idx_type length (void) const { return len; }
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88
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89 private:
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90
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91 // No assignment!
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92
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93 ArrayRep& operator = (const ArrayRep& a);
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94 };
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95
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96 //--------------------------------------------------------------------
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97
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98 public:
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99
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100 void make_unique (void);
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101
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102 typedef T element_type;
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103
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104 protected:
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105
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106 typename Array<T>::ArrayRep *rep;
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107
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108 dim_vector dimensions;
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109
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110 // Rationale:
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111 // slice_data is a pointer to rep->data, denoting together with slice_len the
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112 // actual portion of the data referenced by this Array<T> object. This allows
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113 // to make shallow copies not only of a whole array, but also of contiguous
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114 // subranges. Every time rep is directly manipulated, slice_data and slice_len
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115 // need to be properly updated.
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116
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117 T* slice_data;
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118 octave_idx_type slice_len;
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119
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120 Array (T *d, octave_idx_type n)
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121 : rep (new typename Array<T>::ArrayRep (d, n)), dimensions (n)
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122 {
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123 slice_data = rep->data;
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124 slice_len = rep->len;
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125 }
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126
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127 Array (T *d, const dim_vector& dv)
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128 : rep (new typename Array<T>::ArrayRep (d, get_size (dv))),
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129 dimensions (dv)
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130 {
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131 slice_data = rep->data;
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132 slice_len = rep->len;
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133 }
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134
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135 // slice constructor
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136 Array (const Array<T>& a, const dim_vector& dv,
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137 octave_idx_type l, octave_idx_type u)
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138 : rep(a.rep), dimensions (dv)
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139 {
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140 rep->count++;
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141 slice_data = a.slice_data + l;
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142 slice_len = std::min (u, a.slice_len) - l;
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143 }
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144
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145 private:
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146
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147 typename Array<T>::ArrayRep *nil_rep (void) const
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148 {
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149 static typename Array<T>::ArrayRep *nr
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150 = new typename Array<T>::ArrayRep ();
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151
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152 return nr;
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153 }
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154
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155 template <class U>
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156 T *
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157 coerce (const U *a, octave_idx_type len)
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158 {
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159 T *retval = new T [len];
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160
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161 for (octave_idx_type i = 0; i < len; i++)
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162 retval[i] = T (a[i]);
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163
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164 return retval;
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165 }
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166
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167 public:
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168
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169 Array (void)
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170 : rep (nil_rep ()), dimensions ()
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171 {
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172 rep->count++;
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173 slice_data = rep->data;
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174 slice_len = rep->len;
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175 }
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176
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177 explicit Array (octave_idx_type n)
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178 : rep (new typename Array<T>::ArrayRep (n)), dimensions (n)
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179 {
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180 slice_data = rep->data;
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181 slice_len = rep->len;
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182 }
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183
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184 explicit Array (octave_idx_type n, const T& val)
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185 : rep (new typename Array<T>::ArrayRep (n)), dimensions (n)
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186 {
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187 slice_data = rep->data;
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188 slice_len = rep->len;
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189 fill (val);
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190 }
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191
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192 // Type conversion case.
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193 template <class U>
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194 Array (const Array<U>& a)
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195 : rep (new typename Array<T>::ArrayRep (coerce (a.data (), a.length ()), a.length ())),
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196 dimensions (a.dims ())
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197 {
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198 slice_data = rep->data;
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199 slice_len = rep->len;
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200 }
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201
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202 // No type conversion case.
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203 Array (const Array<T>& a)
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204 : rep (a.rep), dimensions (a.dimensions)
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205 {
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206 rep->count++;
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207 slice_data = a.slice_data;
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208 slice_len = a.slice_len;
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209 }
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210
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211 public:
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212
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213 Array (const dim_vector& dv)
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214 : rep (new typename Array<T>::ArrayRep (get_size (dv))),
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215 dimensions (dv)
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216 {
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217 slice_data = rep->data;
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218 slice_len = rep->len;
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219 }
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220
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221 Array (const dim_vector& dv, const T& val)
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222 : rep (new typename Array<T>::ArrayRep (get_size (dv))),
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223 dimensions (dv)
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224 {
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225 slice_data = rep->data;
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226 slice_len = rep->len;
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227 fill (val);
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228 }
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229
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230 Array (const Array<T>& a, const dim_vector& dv);
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231
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232 virtual ~Array (void);
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233
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234 Array<T>& operator = (const Array<T>& a);
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235
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236 void fill (const T& val);
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237
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238 octave_idx_type capacity (void) const { return slice_len; }
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239 octave_idx_type length (void) const { return capacity (); }
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240 octave_idx_type nelem (void) const { return capacity (); }
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241 octave_idx_type numel (void) const { return nelem (); }
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242
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243 octave_idx_type dim1 (void) const { return dimensions(0); }
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244 octave_idx_type dim2 (void) const { return dimensions(1); }
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245 octave_idx_type dim3 (void) const { return dimensions(2); }
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246
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247 octave_idx_type rows (void) const { return dim1 (); }
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248 octave_idx_type cols (void) const { return dim2 (); }
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249 octave_idx_type columns (void) const { return dim2 (); }
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250 octave_idx_type pages (void) const { return dim3 (); }
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251
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252 size_t byte_size (void) const { return numel () * sizeof (T); }
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253
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254 dim_vector dims (void) const { return dimensions; }
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255
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256 Array<T> squeeze (void) const;
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257
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258 void chop_trailing_singletons (void)
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259 { dimensions.chop_trailing_singletons (); }
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260
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261 static octave_idx_type get_size (octave_idx_type r, octave_idx_type c);
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262 static octave_idx_type get_size (octave_idx_type r, octave_idx_type c, octave_idx_type p);
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263 static octave_idx_type get_size (const dim_vector& dv);
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264
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265 octave_idx_type compute_index (const Array<octave_idx_type>& ra_idx) const;
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266
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267 T range_error (const char *fcn, octave_idx_type n) const;
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268 T& range_error (const char *fcn, octave_idx_type n);
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269
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270 T range_error (const char *fcn, octave_idx_type i, octave_idx_type j) const;
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271 T& range_error (const char *fcn, octave_idx_type i, octave_idx_type j);
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272
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273 T range_error (const char *fcn, octave_idx_type i, octave_idx_type j, octave_idx_type k) const;
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274 T& range_error (const char *fcn, octave_idx_type i, octave_idx_type j, octave_idx_type k);
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275
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276 T range_error (const char *fcn, const Array<octave_idx_type>& ra_idx) const;
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277 T& range_error (const char *fcn, const Array<octave_idx_type>& ra_idx);
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278
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279 // No checking, even for multiple references, ever.
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280
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281 T& xelem (octave_idx_type n) { return slice_data [n]; }
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282 T xelem (octave_idx_type n) const { return slice_data [n]; }
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283
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284 T& xelem (octave_idx_type i, octave_idx_type j) { return xelem (dim1()*j+i); }
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285 T xelem (octave_idx_type i, octave_idx_type j) const { return xelem (dim1()*j+i); }
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286
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287 T& xelem (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return xelem (i, dim2()*k+j); }
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288 T xelem (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return xelem (i, dim2()*k+j); }
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289
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290 T& xelem (const Array<octave_idx_type>& ra_idx)
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291 { return xelem (compute_index (ra_idx)); }
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292
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293 T xelem (const Array<octave_idx_type>& ra_idx) const
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294 { return xelem (compute_index (ra_idx)); }
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295
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296 // FIXME -- would be nice to fix this so that we don't
2006
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297 // unnecessarily force a copy, but that is not so easy, and I see no
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298 // clean way to do it.
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299
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300 T& checkelem (octave_idx_type n)
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301 {
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302 if (n < 0 || n >= slice_len)
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303 return range_error ("T& Array<T>::checkelem", n);
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304 else
2108
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305 {
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306 make_unique ();
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307 return xelem (n);
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308 }
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309 }
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310
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311 T& checkelem (octave_idx_type i, octave_idx_type j)
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312 {
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313 if (i < 0 || j < 0 || i >= dim1 () || j >= dim2 ())
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314 return range_error ("T& Array<T>::checkelem", i, j);
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315 else
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316 return elem (dim1()*j+i);
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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317 }
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318
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319 T& checkelem (octave_idx_type i, octave_idx_type j, octave_idx_type k)
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320 {
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321 if (i < 0 || j < 0 || k < 0 || i >= dim1 () || j >= dim2 () || k >= dim3 ())
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322 return range_error ("T& Array<T>::checkelem", i, j, k);
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diff changeset
323 else
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324 return elem (i, dim2()*k+j);
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325 }
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326
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327 T& checkelem (const Array<octave_idx_type>& ra_idx)
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328 {
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329 octave_idx_type i = compute_index (ra_idx);
4513
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330
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331 if (i < 0)
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332 return range_error ("T& Array<T>::checkelem", ra_idx);
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diff changeset
333 else
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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334 return elem (i);
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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335 }
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336
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337 T& elem (octave_idx_type n)
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338 {
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339 make_unique ();
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340 return xelem (n);
2108
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341 }
2306
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342
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343 T& elem (octave_idx_type i, octave_idx_type j) { return elem (dim1()*j+i); }
4513
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344
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345 T& elem (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return elem (i, dim2()*k+j); }
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346
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347 T& elem (const Array<octave_idx_type>& ra_idx)
4513
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348 { return Array<T>::elem (compute_index (ra_idx)); }
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349
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diff changeset
350 #if defined (BOUNDS_CHECKING)
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351 T& operator () (octave_idx_type n) { return checkelem (n); }
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352 T& operator () (octave_idx_type i, octave_idx_type j) { return checkelem (i, j); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
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353 T& operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return checkelem (i, j, k); }
6867
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354 T& operator () (const Array<octave_idx_type>& ra_idx) { return checkelem (ra_idx); }
2306
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diff changeset
355 #else
5275
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356 T& operator () (octave_idx_type n) { return elem (n); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
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357 T& operator () (octave_idx_type i, octave_idx_type j) { return elem (i, j); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
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358 T& operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return elem (i, j, k); }
6867
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359 T& operator () (const Array<octave_idx_type>& ra_idx) { return elem (ra_idx); }
2006
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360 #endif
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361
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362 T checkelem (octave_idx_type n) const
2006
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diff changeset
363 {
8523
ad3afaaa19c1 implement non-copying contiguous range indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
364 if (n < 0 || n >= slice_len)
2109
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diff changeset
365 return range_error ("T Array<T>::checkelem", n);
2049
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parents: 2023
diff changeset
366 else
2108
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diff changeset
367 return xelem (n);
2006
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368 }
1989
a4b0826e240c [project @ 1996-03-02 00:33:22 by jwe]
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diff changeset
369
5275
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diff changeset
370 T checkelem (octave_idx_type i, octave_idx_type j) const
4513
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371 {
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diff changeset
372 if (i < 0 || j < 0 || i >= dim1 () || j >= dim2 ())
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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diff changeset
373 return range_error ("T Array<T>::checkelem", i, j);
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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diff changeset
374 else
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
375 return elem (dim1()*j+i);
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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parents: 4461
diff changeset
376 }
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diff changeset
377
5275
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diff changeset
378 T checkelem (octave_idx_type i, octave_idx_type j, octave_idx_type k) const
4513
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diff changeset
379 {
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jwe
parents: 4461
diff changeset
380 if (i < 0 || j < 0 || k < 0 || i >= dim1 () || j >= dim2 () || k >= dim3 ())
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
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diff changeset
381 return range_error ("T Array<T>::checkelem", i, j, k);
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
382 else
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
383 return Array<T>::elem (i, Array<T>::dim1()*k+j);
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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parents: 4461
diff changeset
384 }
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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parents: 4461
diff changeset
385
6867
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dbateman
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diff changeset
386 T checkelem (const Array<octave_idx_type>& ra_idx) const
4513
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parents: 4461
diff changeset
387 {
5275
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diff changeset
388 octave_idx_type i = compute_index (ra_idx);
4513
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diff changeset
389
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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parents: 4461
diff changeset
390 if (i < 0)
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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parents: 4461
diff changeset
391 return range_error ("T Array<T>::checkelem", ra_idx);
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
392 else
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
393 return Array<T>::elem (i);
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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parents: 4461
diff changeset
394 }
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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parents: 4461
diff changeset
395
5275
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396 T elem (octave_idx_type n) const { return xelem (n); }
2306
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jwe
parents: 2109
diff changeset
397
5275
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diff changeset
398 T elem (octave_idx_type i, octave_idx_type j) const { return elem (dim1()*j+i); }
4513
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diff changeset
399
5275
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diff changeset
400 T elem (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return elem (i, dim2()*k+j); }
4513
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diff changeset
401
6867
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dbateman
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diff changeset
402 T elem (const Array<octave_idx_type>& ra_idx) const
4513
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jwe
parents: 4461
diff changeset
403 { return Array<T>::elem (compute_index (ra_idx)); }
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
404
2108
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jwe
parents: 2049
diff changeset
405 #if defined (BOUNDS_CHECKING)
5275
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jwe
parents: 5105
diff changeset
406 T operator () (octave_idx_type n) const { return checkelem (n); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
407 T operator () (octave_idx_type i, octave_idx_type j) const { return checkelem (i, j); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
408 T operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return checkelem (i, j, k); }
6867
83619ae96c1d [project @ 2007-09-06 12:08:44 by dbateman]
dbateman
parents: 6708
diff changeset
409 T operator () (const Array<octave_idx_type>& ra_idx) const { return checkelem (ra_idx); }
2006
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parents: 2005
diff changeset
410 #else
5275
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diff changeset
411 T operator () (octave_idx_type n) const { return elem (n); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
412 T operator () (octave_idx_type i, octave_idx_type j) const { return elem (i, j); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
413 T operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return elem (i, j, k); }
6867
83619ae96c1d [project @ 2007-09-06 12:08:44 by dbateman]
dbateman
parents: 6708
diff changeset
414 T operator () (const Array<octave_idx_type>& ra_idx) const { return elem (ra_idx); }
2006
95e952f72d66 [project @ 1996-03-04 00:33:32 by jwe]
jwe
parents: 2005
diff changeset
415 #endif
95e952f72d66 [project @ 1996-03-04 00:33:32 by jwe]
jwe
parents: 2005
diff changeset
416
4567
fc30061d01da [project @ 2003-10-29 20:11:15 by jwe]
jwe
parents: 4559
diff changeset
417 Array<T> reshape (const dim_vector& new_dims) const;
fc30061d01da [project @ 2003-10-29 20:11:15 by jwe]
jwe
parents: 4559
diff changeset
418
5275
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diff changeset
419 Array<T> permute (const Array<octave_idx_type>& vec, bool inv = false) const;
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
420 Array<T> ipermute (const Array<octave_idx_type>& vec) const
4593
77566be8b9e9 [project @ 2003-11-11 17:25:42 by jwe]
jwe
parents: 4587
diff changeset
421 { return permute (vec, true); }
77566be8b9e9 [project @ 2003-11-11 17:25:42 by jwe]
jwe
parents: 4587
diff changeset
422
4513
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parents: 4461
diff changeset
423 bool is_square (void) const { return (dim1 () == dim2 ()); }
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
424
4559
802818bfac91 [project @ 2003-10-28 19:13:43 by jwe]
jwe
parents: 4548
diff changeset
425 bool is_empty (void) const { return numel () == 0; }
802818bfac91 [project @ 2003-10-28 19:13:43 by jwe]
jwe
parents: 4548
diff changeset
426
4513
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parents: 4461
diff changeset
427 Array<T> transpose (void) const;
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7717
diff changeset
428 Array<T> hermitian (T (*fcn) (const T&) = 0) const;
238
780cbbc57b7c [project @ 1993-11-30 20:23:04 by jwe]
jwe
parents: 228
diff changeset
429
8523
ad3afaaa19c1 implement non-copying contiguous range indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
430 const T *data (void) const { return slice_data; }
228
ee01ac1c7acc [project @ 1993-11-16 09:56:54 by jwe]
jwe
parents:
diff changeset
431
3952
945e8c160191 [project @ 2002-05-23 17:18:12 by jwe]
jwe
parents: 3944
diff changeset
432 const T *fortran_vec (void) const { return data (); }
945e8c160191 [project @ 2002-05-23 17:18:12 by jwe]
jwe
parents: 3944
diff changeset
433
238
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parents: 228
diff changeset
434 T *fortran_vec (void);
1560
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
jwe
parents: 1550
diff changeset
435
4513
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parents: 4461
diff changeset
436 int ndims (void) const { return dimensions.length (); }
1560
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
jwe
parents: 1550
diff changeset
437
4517
b4449b1193ac [project @ 2003-09-20 02:06:06 by jwe]
jwe
parents: 4513
diff changeset
438 void maybe_delete_dims (void);
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439
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440 // Indexing without resizing.
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441
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442 Array<T> index (const idx_vector& i) const;
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443
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444 Array<T> index (const idx_vector& i, const idx_vector& j) const;
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445
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446 Array<T> index (const Array<idx_vector>& ia) const;
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447
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448 static T resize_fill_value ();
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449
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450 // Resizing (with fill).
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451
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452 void resize_fill (octave_idx_type n, const T& rfv);
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453
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454 void resize_fill (octave_idx_type nr, octave_idx_type nc, const T& rfv);
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455
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456 void resize_fill (const dim_vector& dv, const T& rfv);
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457
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458 // Resizing with default fill.
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diff changeset
459 // Rationale:
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460 // These use the default fill value rather than leaving memory uninitialized.
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461 // Resizing without fill leaves the resulting array in a rather weird state,
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462 // where part of the data is initialized an part isn't.
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463
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464 void resize (octave_idx_type n)
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465 { resize_fill (n, resize_fill_value ()); }
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466
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467 // FIXME -- this method cannot be defined here because it would
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468 // clash with
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469 //
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470 // void resize (octave_idx_type, const T&)
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471 //
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472 // (these become indistinguishable when T = octave_idx_type).
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473 // In the future, I think the resize (.., const T& rfv) overloads
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474 // should go away in favor of using resize_fill.
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475
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476 // void resize (octave_idx_type nr, octave_idx_type nc)
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477 // { resize_fill (nr, nc, resize_fill_value ()); }
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478
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479 void resize (dim_vector dv)
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480 { resize_fill (dv, resize_fill_value ()); }
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481
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482 // FIXME -- these are here for backward compatibility. They should
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483 // go away in favor of using resize_fill directly.
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484 void resize (octave_idx_type n, const T& rfv)
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485 { resize_fill (n, static_cast<T> (rfv)); }
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486
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487 void resize (octave_idx_type nr, octave_idx_type nc, const T& rfv)
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488 { resize_fill (nr, nc, rfv); }
2382
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489
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490 void resize (dim_vector dv, const T& rfv)
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491 { resize_fill (dv, rfv); }
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492
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493 // Indexing with possible resizing and fill
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494 // FIXME -- this is really a corner case, that should better be
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diff changeset
495 // handled directly in liboctinterp.
3933
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496
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diff changeset
497 Array<T> index (const idx_vector& i, bool resize_ok,
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498 const T& rfv = resize_fill_value ()) const;
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499
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500 Array<T> index (const idx_vector& i, const idx_vector& j,
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diff changeset
501 bool resize_ok, const T& rfv = resize_fill_value ()) const;
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502
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503 Array<T> index (const Array<idx_vector>& ia,
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diff changeset
504 bool resize_ok, const T& rfv = resize_fill_value ()) const;
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diff changeset
505
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506 // Indexed assignment (always with resize & fill).
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507
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508 void assign (const idx_vector& i, const Array<T>& rhs,
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diff changeset
509 const T& rfv = resize_fill_value ());
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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510
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diff changeset
511 void assign (const idx_vector& i, const idx_vector& j, const Array<T>& rhs,
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512 const T& rfv = resize_fill_value ());
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513
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514 void assign (const Array<idx_vector>& ia, const Array<T>& rhs,
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diff changeset
515 const T& rfv = resize_fill_value ());
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516
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517 // Deleting elements.
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518
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519 // A(I) = [] (with a single subscript)
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520 void delete_elements (const idx_vector& i);
4530
e8d87fefd144 [project @ 2003-10-07 04:02:04 by jwe]
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521
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522 // A(:,...,I,...,:) = [] (>= 2 subscripts, one of them is non-colon)
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523 void delete_elements (int dim, const idx_vector& i);
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524
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525 // Dispatcher to the above two.
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diff changeset
526 void delete_elements (const Array<idx_vector>& ia);
4513
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parents: 4461
diff changeset
527
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528 // FIXME -- are these required? What exactly are they supposed to do?.
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diff changeset
529
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diff changeset
530 Array<T>& insert (const Array<T>& a, octave_idx_type r, octave_idx_type c);
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diff changeset
531 Array<T>& insert2 (const Array<T>& a, octave_idx_type r, octave_idx_type c);
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diff changeset
532 Array<T>& insertN (const Array<T>& a, octave_idx_type r, octave_idx_type c);
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diff changeset
533
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parents: 8179
diff changeset
534 Array<T>& insert (const Array<T>& a, const Array<octave_idx_type>& idx);
3933
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diff changeset
535
8523
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diff changeset
536 void maybe_economize (void)
ad3afaaa19c1 implement non-copying contiguous range indexing
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537 {
ad3afaaa19c1 implement non-copying contiguous range indexing
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diff changeset
538 if (rep->count == 1 && slice_len != rep->len)
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diff changeset
539 {
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parents: 8503
diff changeset
540 ArrayRep *new_rep = new ArrayRep (slice_data, slice_len, true);
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parents: 8503
diff changeset
541 delete rep;
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diff changeset
542 rep = new_rep;
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diff changeset
543 slice_data = rep->data;
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544 }
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545 }
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diff changeset
546
4517
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parents: 4513
diff changeset
547 void print_info (std::ostream& os, const std::string& prefix) const;
5900
c20eb7330d13 [project @ 2006-07-22 08:31:16 by jwe]
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parents: 5775
diff changeset
548
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parents: 5775
diff changeset
549 // Unsafe. This function exists to support the MEX interface.
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parents: 5775
diff changeset
550 // You should not use it anywhere else.
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jwe
parents: 5775
diff changeset
551 void *mex_get_data (void) const { return const_cast<T *> (data ()); }
7433
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diff changeset
552
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parents: 7433
diff changeset
553 Array<T> sort (octave_idx_type dim = 0, sortmode mode = ASCENDING) const;
7433
402168152bb9 [project @ 2008-01-31 18:59:09 by dbateman]
dbateman
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diff changeset
554 Array<T> sort (Array<octave_idx_type> &sidx, octave_idx_type dim = 0,
7463
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diff changeset
555 sortmode mode = ASCENDING) const;
7503
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diff changeset
556
7620
36594d5bbe13 Move diag function into the octave_value class
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diff changeset
557 Array<T> diag (octave_idx_type k = 0) const;
36594d5bbe13 Move diag function into the octave_value class
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diff changeset
558
7503
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diff changeset
559 template <class U, class F>
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diff changeset
560 Array<U>
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parents: 7463
diff changeset
561 map (F fcn) const
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parents: 7463
diff changeset
562 {
8c32f95c2639 convert mapper functions to new format
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diff changeset
563 octave_idx_type len = length ();
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diff changeset
564
8c32f95c2639 convert mapper functions to new format
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diff changeset
565 const T *m = data ();
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diff changeset
566
8c32f95c2639 convert mapper functions to new format
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diff changeset
567 Array<U> result (dims ());
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David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
568 U *p = result.fortran_vec ();
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parents: 7463
diff changeset
569
8c32f95c2639 convert mapper functions to new format
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parents: 7463
diff changeset
570 for (octave_idx_type i = 0; i < len; i++)
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parents: 7463
diff changeset
571 {
8c32f95c2639 convert mapper functions to new format
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diff changeset
572 OCTAVE_QUIT;
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diff changeset
573
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diff changeset
574 p[i] = fcn (m[i]);
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parents: 7463
diff changeset
575 }
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parents: 7463
diff changeset
576
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diff changeset
577 return result;
8c32f95c2639 convert mapper functions to new format
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diff changeset
578 }
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
579 };
4459
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jwe
parents: 4192
diff changeset
580
8290
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diff changeset
581 #define INSTANTIATE_ARRAY(T, API) \
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Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
582 template class API Array<T>
4518
382cb0ed8c14 [project @ 2003-09-20 18:08:40 by jwe]
jwe
parents: 4517
diff changeset
583
8333
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parents: 8290
diff changeset
584 // FIXME -- these are here for compatibility. In the current
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8290
diff changeset
585 // implementation, only homogeneous array assignments are actually
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8290
diff changeset
586 // instantiated. I think heterogeneous indexed assignments are rare
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8290
diff changeset
587 // enough to be implemented via conversion first. This decision may
9238637cb81c style fixes
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588 // still be revised, that's why these macros stay here.
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589 #define INSTANTIATE_ARRAY_AND_ASSIGN(T, API) \
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590 INSTANTIATE_ARRAY(T, API)
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591
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592 #define INSTANTIATE_ARRAY_ASSIGN(LT, RT, API)
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593 // do nothing
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594
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595 #define INSTANTIATE_ARRAY_SORT(T) \
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dbateman
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596 template class octave_sort<T>; \
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597 template class vec_index<T>; \
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598 template class octave_sort<vec_index<T> *>;
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599
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600 #define NO_INSTANTIATE_ARRAY_SORT(T) \
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601 template class vec_index<T>; \
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602 template <> bool ascending_compare (T, T) { return true; } \
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603 template <> bool ascending_compare (vec_index<T> *, vec_index<T> *) \
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604 { return true; } \
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605 template <> bool descending_compare (T, T) { return true; } \
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606 template <> bool descending_compare (vec_index<T> *, vec_index<T> *) \
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607 { return true; } \
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608 template <> Array<T> Array<T>::sort \
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609 (octave_idx_type, sortmode) const { return *this; } \
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610 template <> Array<T> Array<T>::sort (Array<octave_idx_type> &sidx, \
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611 octave_idx_type, sortmode) const \
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612 { sidx = Array<octave_idx_type> (); return *this; }
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613
228
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614 #endif
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615
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616 /*
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617 ;;; Local Variables: ***
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618 ;;; mode: C++ ***
ee01ac1c7acc [project @ 1993-11-16 09:56:54 by jwe]
jwe
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619 ;;; End: ***
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620 */