Mercurial > octave
annotate liboctave/array/idx-vector.h @ 23015:198fbbf6934a
new idx_vector (F77_INT) constructor
* idx-vector.h (idx_vector (octave_f77_int_type)): New constructor if
sizeof F77_INT and octave_idx_type differ.
author | John W. Eaton <jwe@octave.org> |
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date | Sat, 07 Jan 2017 13:19:46 -0500 |
parents | 27e4ec3b0b49 |
children | ef4d915df748 |
rev | line source |
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1 | 1 /* |
2 | |
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3 Copyright (C) 1993-2016 John W. Eaton |
11523 | 4 Copyright (C) 2008-2009 Jaroslav Hajek |
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5 Copyright (C) 2009 VZLU Prague |
1 | 6 |
7 This file is part of Octave. | |
8 | |
9 Octave is free software; you can redistribute it and/or modify it | |
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10 under the terms of the GNU General Public License as published by |
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11 the Free Software Foundation; either version 3 of the License, or |
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12 (at your option) any later version. |
1 | 13 |
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14 Octave is distributed in the hope that it will be useful, but |
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15 WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 GNU General Public License for more details. |
1 | 18 |
19 You should have received a copy of the GNU General Public License | |
7016 | 20 along with Octave; see the file COPYING. If not, see |
21 <http://www.gnu.org/licenses/>. | |
1 | 22 |
23 */ | |
24 | |
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25 #if ! defined (octave_idx_vector_h) |
383 | 26 #define octave_idx_vector_h 1 |
1 | 27 |
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28 #include "octave-config.h" |
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29 |
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30 #include <cassert> |
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31 #include <cstring> |
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32 |
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33 #include <algorithm> |
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34 #include <iosfwd> |
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35 #include <memory> |
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4653 | 37 #include "dim-vector.h" |
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38 #include "oct-inttypes-fwd.h" |
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39 #include "oct-refcount.h" |
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40 |
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41 template <typename T> class Array; |
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42 template <typename T> class Sparse; |
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43 class Range; |
4504 | 44 |
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45 // Design rationale: |
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46 // idx_vector is a reference-counting, polymorphic pointer, that can contain |
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47 // 4 types of index objects: a magic colon, a range, a scalar, or an index vector. |
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48 // Polymorphic methods for single element access are provided, as well as |
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49 // templates implementing "early dispatch", i.e., hoisting the checks for index |
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50 // type out of loops. |
164 | 51 |
453 | 52 class |
6108 | 53 OCTAVE_API |
453 | 54 idx_vector |
1 | 55 { |
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56 public: |
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57 |
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58 enum idx_class_type |
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59 { |
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60 class_invalid = -1, |
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61 class_colon = 0, |
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62 class_range, |
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63 class_scalar, |
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64 class_vector, |
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65 class_mask |
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66 }; |
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67 |
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68 template <typename T, typename D> friend class std::unique_ptr; |
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69 |
1560 | 70 private: |
71 | |
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72 class OCTAVE_API idx_base_rep |
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73 { |
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74 public: |
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75 idx_base_rep (void) : count (1), err (false) { } |
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76 |
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77 // No copying! |
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78 |
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79 idx_base_rep (const idx_base_rep&) = delete; |
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80 |
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81 idx_base_rep& operator = (const idx_base_rep&) = delete; |
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82 |
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83 virtual ~idx_base_rep (void) = default; |
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84 |
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85 // Non-range-checking element query. |
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86 virtual octave_idx_type xelem (octave_idx_type i) const = 0; |
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87 |
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88 // Range-checking element query. |
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89 virtual octave_idx_type checkelem (octave_idx_type i) const = 0; |
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90 |
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91 // Length of the index vector. |
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92 virtual octave_idx_type length (octave_idx_type n) const = 0; |
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93 |
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94 // The maximum index + 1. The actual dimension is passed in. |
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95 virtual octave_idx_type extent (octave_idx_type n) const = 0; |
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96 |
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97 // Index class. |
8333 | 98 virtual idx_class_type idx_class (void) const { return class_invalid; } |
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99 |
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100 // Sorts, maybe uniqifies, and returns a clone object pointer. |
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101 virtual idx_base_rep *sort_uniq_clone (bool uniq = false) = 0; |
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102 // Sorts, and returns a sorting permutation (aka Array::sort). |
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103 virtual idx_base_rep *sort_idx (Array<octave_idx_type>&) = 0; |
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104 |
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105 // Checks whether the index is colon or a range equivalent to colon. |
10487 | 106 virtual bool is_colon_equiv (octave_idx_type) const { return false; } |
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107 |
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108 // The original dimensions of object (used when subscribing by matrices). |
10487 | 109 virtual dim_vector orig_dimensions (void) const { return dim_vector (); } |
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110 |
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111 // i/o |
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112 virtual std::ostream& print (std::ostream& os) const = 0; |
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113 |
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114 virtual Array<octave_idx_type> as_array (void); |
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115 |
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116 octave::refcount<int> count; |
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117 |
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118 bool err; |
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119 }; |
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120 |
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121 // The magic colon index. |
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122 class OCTAVE_API idx_colon_rep : public idx_base_rep |
1879 | 123 { |
124 public: | |
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125 idx_colon_rep (void) { } |
1879 | 126 |
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127 idx_colon_rep (char c); |
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128 |
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129 // No copying! |
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130 |
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131 idx_colon_rep (const idx_colon_rep& idx) = delete; |
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132 |
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133 idx_colon_rep& operator = (const idx_colon_rep& idx) = delete; |
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134 |
10487 | 135 octave_idx_type xelem (octave_idx_type i) const { return i; } |
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136 |
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137 octave_idx_type checkelem (octave_idx_type i) const; |
1560 | 138 |
10487 | 139 octave_idx_type length (octave_idx_type n) const { return n; } |
1560 | 140 |
10487 | 141 octave_idx_type extent (octave_idx_type n) const { return n; } |
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142 |
8333 | 143 idx_class_type idx_class (void) const { return class_colon; } |
1879 | 144 |
10487 | 145 idx_base_rep *sort_uniq_clone (bool = false) |
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146 { count++; return this; } |
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147 |
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148 OCTAVE_NORETURN idx_base_rep *sort_idx (Array<octave_idx_type>&); |
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149 |
10487 | 150 bool is_colon_equiv (octave_idx_type) const { return true; } |
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151 |
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152 std::ostream& print (std::ostream& os) const; |
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153 }; |
2386 | 154 |
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155 // To distinguish the "direct" constructors that blindly trust the data. |
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156 enum direct { DIRECT }; |
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158 // The integer range index. |
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159 class OCTAVE_API idx_range_rep : public idx_base_rep |
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160 { |
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161 public: |
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162 idx_range_rep (void) |
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163 : start(0), len(0), step(1) { } |
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164 |
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165 idx_range_rep (octave_idx_type _start, octave_idx_type _len, |
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166 octave_idx_type _step, direct) |
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167 : idx_base_rep (), start(_start), len(_len), step(_step) { } |
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169 // No copying! |
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170 |
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171 idx_range_rep (const idx_range_rep& idx) = delete; |
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172 |
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173 idx_range_rep& operator = (const idx_range_rep& idx) = delete; |
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175 // Zero-based constructor. |
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176 idx_range_rep (octave_idx_type _start, octave_idx_type _limit, |
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177 octave_idx_type _step); |
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179 idx_range_rep (const Range&); |
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181 octave_idx_type xelem (octave_idx_type i) const |
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182 { return start + i * step; } |
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184 octave_idx_type checkelem (octave_idx_type i) const; |
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185 |
10487 | 186 octave_idx_type length (octave_idx_type) const { return len; } |
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188 octave_idx_type extent (octave_idx_type n) const |
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189 { |
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190 return len ? std::max (n, start + 1 + (step < 0 ? 0 : step * (len - 1))) |
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191 : n; |
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192 } |
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8333 | 194 idx_class_type idx_class (void) const { return class_range; } |
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196 idx_base_rep *sort_uniq_clone (bool uniq = false); |
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198 idx_base_rep *sort_idx (Array<octave_idx_type>&); |
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199 |
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200 bool is_colon_equiv (octave_idx_type n) const |
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201 { return start == 0 && step == 1 && len == n; } |
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8333 | 203 dim_vector orig_dimensions (void) const |
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204 { return dim_vector (1, len); } |
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8333 | 206 octave_idx_type get_start (void) const { return start; } |
1560 | 207 |
8333 | 208 octave_idx_type get_step (void) const { return step; } |
1560 | 209 |
3504 | 210 std::ostream& print (std::ostream& os) const; |
1560 | 211 |
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212 Range unconvert (void) const; |
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213 |
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214 Array<octave_idx_type> as_array (void); |
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215 |
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216 private: |
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217 |
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218 octave_idx_type start, len, step; |
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219 }; |
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220 |
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221 // The integer scalar index. |
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222 class OCTAVE_API idx_scalar_rep : public idx_base_rep |
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223 { |
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224 public: |
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225 idx_scalar_rep (void) |
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226 : data (0) { } |
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227 |
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228 idx_scalar_rep (octave_idx_type i, direct) |
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229 : data (i) { } |
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230 |
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231 // No copying! |
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232 |
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233 idx_scalar_rep (const idx_scalar_rep& idx) = delete; |
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234 |
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235 idx_scalar_rep& operator = (const idx_scalar_rep& idx) = delete; |
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236 |
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237 // Zero-based constructor. |
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238 idx_scalar_rep (octave_idx_type i); |
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239 |
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240 template <typename T> |
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241 idx_scalar_rep (T x); |
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242 |
10487 | 243 octave_idx_type xelem (octave_idx_type) const { return data; } |
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244 |
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245 octave_idx_type checkelem (octave_idx_type i) const; |
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246 |
10487 | 247 octave_idx_type length (octave_idx_type) const { return 1; } |
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248 |
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249 octave_idx_type extent (octave_idx_type n) const |
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250 { return std::max (n, data + 1); } |
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251 |
8333 | 252 idx_class_type idx_class (void) const { return class_scalar; } |
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253 |
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254 idx_base_rep *sort_uniq_clone (bool = false) |
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255 { count++; return this; } |
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256 |
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257 idx_base_rep *sort_idx (Array<octave_idx_type>&); |
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258 |
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259 bool is_colon_equiv (octave_idx_type n) const |
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260 { return n == 1 && data == 0; } |
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261 |
10487 | 262 dim_vector orig_dimensions (void) const { return dim_vector (1, 1); } |
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263 |
8333 | 264 octave_idx_type get_data (void) const { return data; } |
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265 |
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266 std::ostream& print (std::ostream& os) const; |
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267 |
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268 double unconvert (void) const; |
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269 |
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270 Array<octave_idx_type> as_array (void); |
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271 |
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272 private: |
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273 |
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274 octave_idx_type data; |
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275 }; |
4504 | 276 |
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277 // The integer vector index. |
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278 class OCTAVE_API idx_vector_rep : public idx_base_rep |
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279 { |
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280 public: |
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281 idx_vector_rep (void) |
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282 : data (0), len (0), ext (0), aowner (0), orig_dims () |
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283 { } |
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284 |
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285 // Direct constructor. |
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286 idx_vector_rep (octave_idx_type *_data, octave_idx_type _len, |
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287 octave_idx_type _ext, const dim_vector& od, direct) |
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288 : data (_data), len (_len), ext (_ext), aowner (0), orig_dims (od) { } |
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289 |
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290 // Zero-based constructor. |
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291 idx_vector_rep (const Array<octave_idx_type>& inda); |
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292 |
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293 idx_vector_rep (const Array<octave_idx_type>& inda, |
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294 octave_idx_type _ext, direct); |
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295 |
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296 template <typename T> |
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297 idx_vector_rep (const Array<T>&); |
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298 |
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299 idx_vector_rep (bool); |
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300 |
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301 idx_vector_rep (const Array<bool>&, octave_idx_type = -1); |
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302 |
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303 idx_vector_rep (const Sparse<bool>&); |
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304 |
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305 // No copying! |
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306 |
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307 idx_vector_rep (const idx_vector_rep& idx) = delete; |
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308 |
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309 idx_vector_rep& operator = (const idx_vector_rep& idx) = delete; |
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310 |
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311 ~idx_vector_rep (void); |
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312 |
10487 | 313 octave_idx_type xelem (octave_idx_type i) const { return data[i]; } |
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314 |
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315 octave_idx_type checkelem (octave_idx_type i) const; |
4653 | 316 |
10487 | 317 octave_idx_type length (octave_idx_type) const { return len; } |
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318 |
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319 octave_idx_type extent (octave_idx_type n) const |
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320 { return std::max (n, ext); } |
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321 |
8333 | 322 idx_class_type idx_class (void) const { return class_vector; } |
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323 |
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324 idx_base_rep *sort_uniq_clone (bool uniq = false); |
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325 |
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326 idx_base_rep *sort_idx (Array<octave_idx_type>&); |
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327 |
10487 | 328 dim_vector orig_dimensions (void) const { return orig_dims; } |
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329 |
8333 | 330 const octave_idx_type *get_data (void) const { return data; } |
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331 |
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332 std::ostream& print (std::ostream& os) const; |
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333 |
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334 Array<double> unconvert (void) const; |
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335 |
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336 Array<octave_idx_type> as_array (void); |
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337 |
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338 private: |
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339 |
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340 const octave_idx_type *data; |
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341 octave_idx_type len; |
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342 octave_idx_type ext; |
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343 |
10487 | 344 // This is a trick to allow user-given zero-based arrays to be used |
345 // as indices without copying. If the following pointer is nonzero, | |
346 // we do not own the data, but rather have an Array<octave_idx_type> | |
347 // object that provides us the data. Note that we need a pointer | |
348 // because we deferred the Array<T> declaration and we do not want | |
349 // it yet to be defined. | |
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350 |
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351 Array<octave_idx_type> *aowner; |
1560 | 352 |
4653 | 353 dim_vector orig_dims; |
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354 }; |
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355 |
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356 // The logical mask index. |
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357 class OCTAVE_API idx_mask_rep : public idx_base_rep |
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358 { |
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359 public: |
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360 idx_mask_rep (void) |
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361 : data (0), len (0), ext (0), lsti (-1), lste (-1), aowner (0), |
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362 orig_dims () |
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363 { } |
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364 |
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365 // Direct constructor. |
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366 idx_mask_rep (bool *_data, octave_idx_type _len, |
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367 octave_idx_type _ext, const dim_vector& od, direct) |
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368 : data (_data), len (_len), ext (_ext), lsti (-1), lste (-1), |
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369 aowner (0), orig_dims (od) { } |
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370 |
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371 idx_mask_rep (bool); |
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372 |
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373 idx_mask_rep (const Array<bool>&, octave_idx_type = -1); |
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374 |
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375 // No copying! |
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376 |
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377 idx_mask_rep (const idx_mask_rep& idx) = delete; |
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378 |
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379 idx_mask_rep& operator = (const idx_mask_rep& idx) = delete; |
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380 |
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381 ~idx_mask_rep (void); |
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382 |
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383 octave_idx_type xelem (octave_idx_type i) const; |
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384 |
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385 octave_idx_type checkelem (octave_idx_type i) const; |
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386 |
10487 | 387 octave_idx_type length (octave_idx_type) const { return len; } |
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388 |
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389 octave_idx_type extent (octave_idx_type n) const |
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390 { return std::max (n, ext); } |
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391 |
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392 idx_class_type idx_class (void) const { return class_mask; } |
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393 |
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394 idx_base_rep *sort_uniq_clone (bool = false) |
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395 { count++; return this; } |
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396 |
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397 idx_base_rep *sort_idx (Array<octave_idx_type>&); |
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398 |
10487 | 399 dim_vector orig_dimensions (void) const { return orig_dims; } |
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400 |
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401 bool is_colon_equiv (octave_idx_type n) const |
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402 { return len == n && ext == n; } |
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403 |
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404 const bool *get_data (void) const { return data; } |
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405 |
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406 std::ostream& print (std::ostream& os) const; |
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407 |
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408 Array<bool> unconvert (void) const; |
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409 |
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410 Array<octave_idx_type> as_array (void); |
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411 |
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412 private: |
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413 |
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414 const bool *data; |
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415 octave_idx_type len; |
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416 octave_idx_type ext; |
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417 |
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418 // FIXME: I'm not sure if this is a good design. Maybe it would be |
10487 | 419 // better to employ some sort of generalized iteration scheme. |
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420 mutable octave_idx_type lsti; |
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421 mutable octave_idx_type lste; |
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422 |
10487 | 423 // This is a trick to allow user-given mask arrays to be used as |
424 // indices without copying. If the following pointer is nonzero, we | |
425 // do not own the data, but rather have an Array<bool> object that | |
426 // provides us the data. Note that we need a pointer because we | |
427 // deferred the Array<T> declaration and we do not want it yet to be | |
428 // defined. | |
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429 |
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430 Array<bool> *aowner; |
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431 |
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432 dim_vector orig_dims; |
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433 }; |
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434 |
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435 idx_vector (idx_base_rep *r) : rep (r) { } |
1560 | 436 |
10487 | 437 // The shared empty vector representation (for fast default |
438 // constructor). | |
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439 static idx_vector_rep *nil_rep (void); |
4938 | 440 |
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441 // The shared empty vector representation with the error flag set. |
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442 static idx_vector_rep *err_rep (void); |
4938 | 443 |
10487 | 444 // If there was an error in constructing the rep, replace it with |
445 // empty vector for safety. | |
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446 void chkerr (void) |
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447 { |
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448 if (rep->err) |
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449 { |
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450 if (--rep->count == 0) |
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451 delete rep; |
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452 rep = err_rep (); |
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453 rep->count++; |
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454 } |
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455 } |
1560 | 456 |
1 | 457 public: |
1551 | 458 |
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459 // Fast empty constructor. |
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460 idx_vector (void) : rep (nil_rep ()) { rep->count++; } |
1560 | 461 |
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462 // Zero-based constructors (for use from C++). |
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463 idx_vector (octave_idx_type i) : rep (new idx_scalar_rep (i)) |
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464 { chkerr (); } |
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465 |
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466 #if OCTAVE_SIZEOF_F77_INT_TYPE != OCTAVE_SIZEOF_IDX_TYPE |
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467 idx_vector (octave_f77_int_type i) |
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468 : rep (new idx_scalar_rep (static_cast<octave_idx_type> (i))) |
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469 { chkerr (); } |
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470 #endif |
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471 |
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472 idx_vector (octave_idx_type start, octave_idx_type limit, |
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473 octave_idx_type step = 1) |
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474 : rep (new idx_range_rep (start, limit, step)) |
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475 { chkerr (); } |
1560 | 476 |
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477 static idx_vector |
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478 make_range (octave_idx_type start, octave_idx_type step, |
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479 octave_idx_type len) |
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480 { |
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481 return idx_vector (new idx_range_rep (start, len, step, DIRECT)); |
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482 } |
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483 |
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484 idx_vector (const Array<octave_idx_type>& inda) |
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485 : rep (new idx_vector_rep (inda)) |
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486 { chkerr (); } |
1560 | 487 |
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488 // Directly pass extent, no checking. |
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489 idx_vector (const Array<octave_idx_type>& inda, octave_idx_type ext) |
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490 : rep (new idx_vector_rep (inda, ext, DIRECT)) |
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491 { } |
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492 |
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493 // Colon is best constructed by simply copying (or referencing) this member. |
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494 static const idx_vector colon; |
4938 | 495 |
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496 // or passing ':' here |
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497 idx_vector (char c) : rep (new idx_colon_rep (c)) { chkerr (); } |
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498 |
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499 // Conversion constructors (used by interpreter). |
1560 | 500 |
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501 template <typename T> |
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502 idx_vector (octave_int<T> x) : rep (new idx_scalar_rep (x)) { chkerr (); } |
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503 |
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504 idx_vector (double x) : rep (new idx_scalar_rep (x)) { chkerr (); } |
2386 | 505 |
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506 idx_vector (float x) : rep (new idx_scalar_rep (x)) { chkerr (); } |
3928 | 507 |
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508 // A scalar bool does not necessarily map to scalar index. |
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509 idx_vector (bool x) : rep (new idx_mask_rep (x)) { chkerr (); } |
1560 | 510 |
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511 template <typename T> |
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512 idx_vector (const Array<octave_int<T> >& nda) : rep (new idx_vector_rep (nda)) |
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513 { chkerr (); } |
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514 |
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515 idx_vector (const Array<double>& nda) : rep (new idx_vector_rep (nda)) |
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516 { chkerr (); } |
2828 | 517 |
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518 idx_vector (const Array<float>& nda) : rep (new idx_vector_rep (nda)) |
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519 { chkerr (); } |
4938 | 520 |
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521 idx_vector (const Array<bool>& nda); |
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522 |
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523 idx_vector (const Range& r) |
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524 : rep (new idx_range_rep (r)) |
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525 { chkerr (); } |
2828 | 526 |
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527 idx_vector (const Sparse<bool>& nda) : rep (new idx_vector_rep (nda)) |
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528 { chkerr (); } |
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529 |
4979 | 530 idx_vector (const idx_vector& a) : rep (a.rep) { rep->count++; } |
1551 | 531 |
2802 | 532 ~idx_vector (void) |
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533 { |
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534 if (--rep->count == 0) |
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535 delete rep; |
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536 } |
1 | 537 |
1560 | 538 idx_vector& operator = (const idx_vector& a) |
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539 { |
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540 if (this != &a) |
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541 { |
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542 if (--rep->count == 0) |
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543 delete rep; |
1 | 544 |
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545 rep = a.rep; |
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546 rep->count++; |
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547 } |
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548 return *this; |
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549 } |
1551 | 550 |
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551 idx_class_type idx_class (void) const { return rep->idx_class (); } |
1560 | 552 |
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553 octave_idx_type length (octave_idx_type n = 0) const |
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554 { return rep->length (n); } |
191 | 555 |
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556 octave_idx_type extent (octave_idx_type n) const |
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557 { return rep->extent (n); } |
1 | 558 |
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559 octave_idx_type xelem (octave_idx_type n) const |
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560 { return rep->xelem (n); } |
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561 |
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562 octave_idx_type checkelem (octave_idx_type n) const |
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563 { return rep->checkelem (n); } |
1551 | 564 |
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565 octave_idx_type operator () (octave_idx_type n) const |
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566 { |
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567 #if defined (OCTAVE_ENABLE_BOUNDS_CHECK) |
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568 return rep->checkelem (n); |
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569 #else |
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570 return rep->xelem (n); |
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571 #endif |
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572 } |
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573 |
8333 | 574 operator bool (void) const |
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575 { return ! rep->err; } |
1 | 576 |
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577 bool is_colon (void) const |
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578 { return rep->idx_class () == class_colon; } |
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579 |
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580 bool is_scalar (void) const |
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581 { return rep->idx_class () == class_scalar; } |
1 | 582 |
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583 bool is_range (void) const |
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584 { return rep->idx_class () == class_range; } |
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585 |
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586 bool is_colon_equiv (octave_idx_type n) const |
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587 { return rep->is_colon_equiv (n); } |
3079 | 588 |
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589 idx_vector sorted (bool uniq = false) const |
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590 { return idx_vector (rep->sort_uniq_clone (uniq)); } |
208 | 591 |
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592 idx_vector sorted (Array<octave_idx_type>& sidx) const |
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593 { return idx_vector (rep->sort_idx (sidx)); } |
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594 |
4653 | 595 dim_vector orig_dimensions (void) const { return rep->orig_dimensions (); } |
4504 | 596 |
8333 | 597 octave_idx_type orig_rows (void) const |
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598 { return orig_dimensions () (0); } |
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599 |
8333 | 600 octave_idx_type orig_columns (void) const |
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601 { return orig_dimensions () (1); } |
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602 |
2663 | 603 int orig_empty (void) const |
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604 { return (! is_colon () && orig_dimensions ().any_zero ()); } |
2663 | 605 |
4653 | 606 // i/o |
1 | 607 |
3504 | 608 std::ostream& print (std::ostream& os) const { return rep->print (os); } |
1560 | 609 |
3504 | 610 friend std::ostream& operator << (std::ostream& os, const idx_vector& a) |
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611 { return a.print (os); } |
1560 | 612 |
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613 // Slice with specializations. No checking of bounds! |
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614 // |
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615 // This is equivalent to the following loop (but much faster): |
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616 // |
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617 // for (octave_idx_type i = 0; i < idx->length (n); i++) |
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618 // dest[i] = src[idx(i)]; |
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619 // return i; |
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620 // |
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621 template <typename T> |
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622 octave_idx_type |
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623 index (const T *src, octave_idx_type n, T *dest) const |
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624 { |
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625 octave_idx_type len = rep->length (n); |
10487 | 626 |
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627 switch (rep->idx_class ()) |
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628 { |
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629 case class_colon: |
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630 std::copy (src, src + len, dest); |
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631 break; |
10487 | 632 |
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633 case class_range: |
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634 { |
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635 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep); |
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636 octave_idx_type start = r->get_start (); |
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637 octave_idx_type step = r->get_step (); |
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638 const T *ssrc = src + start; |
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639 if (step == 1) |
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640 std::copy (ssrc, ssrc + len, dest); |
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641 else if (step == -1) |
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642 std::reverse_copy (ssrc - len + 1, ssrc + 1, dest); |
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643 else if (step == 0) |
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644 std::fill_n (dest, len, *ssrc); |
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645 else |
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646 { |
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647 for (octave_idx_type i = 0, j = 0; i < len; i++, j += step) |
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648 dest[i] = ssrc[j]; |
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649 } |
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650 } |
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651 break; |
10487 | 652 |
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653 case class_scalar: |
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654 { |
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655 idx_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep); |
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656 dest[0] = src[r->get_data ()]; |
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657 } |
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658 break; |
10487 | 659 |
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660 case class_vector: |
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661 { |
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662 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep); |
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663 const octave_idx_type *data = r->get_data (); |
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664 for (octave_idx_type i = 0; i < len; i++) |
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665 dest[i] = src[data[i]]; |
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666 } |
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667 break; |
10487 | 668 |
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669 case class_mask: |
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670 { |
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671 idx_mask_rep * r = dynamic_cast<idx_mask_rep *> (rep); |
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672 const bool *data = r->get_data (); |
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673 octave_idx_type ext = r->extent (0); |
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674 for (octave_idx_type i = 0; i < ext; i++) |
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675 if (data[i]) *dest++ = src[i]; |
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676 } |
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677 break; |
10487 | 678 |
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679 default: |
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680 assert (false); |
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681 break; |
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682 } |
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683 |
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684 return len; |
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685 } |
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686 |
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687 // Slice assignment with specializations. No checking of bounds! |
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688 // |
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689 // This is equivalent to the following loop (but much faster): |
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690 // |
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691 // for (octave_idx_type i = 0; i < idx->length (n); i++) |
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692 // dest[idx(i)] = src[i]; |
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693 // return i; |
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694 // |
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695 template <typename T> |
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696 octave_idx_type |
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697 assign (const T *src, octave_idx_type n, T *dest) const |
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698 { |
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699 octave_idx_type len = rep->length (n); |
10487 | 700 |
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701 switch (rep->idx_class ()) |
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702 { |
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703 case class_colon: |
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704 std::copy (src, src + len, dest); |
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705 break; |
10487 | 706 |
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707 case class_range: |
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708 { |
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709 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep); |
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710 octave_idx_type start = r->get_start (); |
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711 octave_idx_type step = r->get_step (); |
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712 T *sdest = dest + start; |
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713 if (step == 1) |
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714 std::copy (src, src + len, sdest); |
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715 else if (step == -1) |
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716 std::reverse_copy (src, src + len, sdest - len + 1); |
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717 else |
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718 { |
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719 for (octave_idx_type i = 0, j = 0; i < len; i++, j += step) |
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720 sdest[j] = src[i]; |
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721 } |
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722 } |
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723 break; |
10487 | 724 |
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725 case class_scalar: |
49a5a4be04a1
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Rik <rik@octave.org>
parents:
17744
diff
changeset
|
726 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
727 idx_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
728 dest[r->get_data ()] = src[0]; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
729 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
730 break; |
10487 | 731 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
732 case class_vector: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
733 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
734 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
735 const octave_idx_type *data = r->get_data (); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
736 for (octave_idx_type i = 0; i < len; i++) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
737 dest[data[i]] = src[i]; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
738 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
739 break; |
10487 | 740 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
741 case class_mask: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
742 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
743 idx_mask_rep * r = dynamic_cast<idx_mask_rep *> (rep); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
744 const bool *data = r->get_data (); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
745 octave_idx_type ext = r->extent (0); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
746 for (octave_idx_type i = 0; i < ext; i++) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
747 if (data[i]) dest[i] = *src++; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
748 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
749 break; |
10487 | 750 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
751 default: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
752 assert (false); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
753 break; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
754 } |
8290
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
755 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
756 return len; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
757 } |
8290
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
758 |
21751
b571fc85953f
maint: Use two spaces after period to indicate sentence break.
Rik <rik@octave.org>
parents:
21574
diff
changeset
|
759 // Slice fill with specializations. No checking of bounds! |
8290
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
760 // |
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
761 // This is equivalent to the following loop (but much faster): |
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
762 // |
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
763 // for (octave_idx_type i = 0; i < idx->length (n); i++) |
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
764 // dest[idx(i)] = val; |
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
765 // return i; |
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
766 // |
21139
538b57866b90
consistently use "typename" intead of "class" in template declarations
John W. Eaton <jwe@octave.org>
parents:
21137
diff
changeset
|
767 template <typename T> |
8290
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
768 octave_idx_type |
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
769 fill (const T& val, octave_idx_type n, T *dest) const |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
770 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
771 octave_idx_type len = rep->length (n); |
10487 | 772 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
773 switch (rep->idx_class ()) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
774 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
775 case class_colon: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
776 std::fill (dest, dest + len, val); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
777 break; |
10487 | 778 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
779 case class_range: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
780 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
781 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep); |
18084
8e056300994b
Follow coding convention of defining and initializing only 1 variable per line in liboctave.
Rik <rik@octave.org>
parents:
17769
diff
changeset
|
782 octave_idx_type start = r->get_start (); |
8e056300994b
Follow coding convention of defining and initializing only 1 variable per line in liboctave.
Rik <rik@octave.org>
parents:
17769
diff
changeset
|
783 octave_idx_type step = r->get_step (); |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
784 T *sdest = dest + start; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
785 if (step == 1) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
786 std::fill (sdest, sdest + len, val); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
787 else if (step == -1) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
788 std::fill (sdest - len + 1, sdest + 1, val); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
789 else |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
790 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
791 for (octave_idx_type i = 0, j = 0; i < len; i++, j += step) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
792 sdest[j] = val; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
793 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
794 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
795 break; |
10487 | 796 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
797 case class_scalar: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
798 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
799 idx_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
800 dest[r->get_data ()] = val; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
801 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
802 break; |
10487 | 803 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
804 case class_vector: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
805 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
806 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
807 const octave_idx_type *data = r->get_data (); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
808 for (octave_idx_type i = 0; i < len; i++) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
809 dest[data[i]] = val; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
810 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
811 break; |
10487 | 812 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
813 case class_mask: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
814 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
815 idx_mask_rep * r = dynamic_cast<idx_mask_rep *> (rep); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
816 const bool *data = r->get_data (); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
817 octave_idx_type ext = r->extent (0); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
818 for (octave_idx_type i = 0; i < ext; i++) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
819 if (data[i]) dest[i] = val; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
820 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
821 break; |
10487 | 822 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
823 default: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
824 assert (false); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
825 break; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
826 } |
8290
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
827 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
828 return len; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
829 } |
8290
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
830 |
21751
b571fc85953f
maint: Use two spaces after period to indicate sentence break.
Rik <rik@octave.org>
parents:
21574
diff
changeset
|
831 // Generic non-breakable indexed loop. The loop body should be |
10487 | 832 // encapsulated in a single functor body. This is equivalent to the |
833 // following loop (but faster, at least for simple inlined bodies): | |
8934
c2099a4d12ea
partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents:
8920
diff
changeset
|
834 // |
c2099a4d12ea
partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents:
8920
diff
changeset
|
835 // for (octave_idx_type i = 0; i < idx->length (n); i++) body (idx(i)); |
c2099a4d12ea
partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents:
8920
diff
changeset
|
836 |
21139
538b57866b90
consistently use "typename" intead of "class" in template declarations
John W. Eaton <jwe@octave.org>
parents:
21137
diff
changeset
|
837 template <typename Functor> |
8934
c2099a4d12ea
partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents:
8920
diff
changeset
|
838 void |
c2099a4d12ea
partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents:
8920
diff
changeset
|
839 loop (octave_idx_type n, Functor body) const |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
840 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
841 octave_idx_type len = rep->length (n); |
10487 | 842 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
843 switch (rep->idx_class ()) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
844 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
845 case class_colon: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
846 for (octave_idx_type i = 0; i < len; i++) body (i); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
847 break; |
10487 | 848 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
849 case class_range: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
850 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
851 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep); |
18084
8e056300994b
Follow coding convention of defining and initializing only 1 variable per line in liboctave.
Rik <rik@octave.org>
parents:
17769
diff
changeset
|
852 octave_idx_type start = r->get_start (); |
8e056300994b
Follow coding convention of defining and initializing only 1 variable per line in liboctave.
Rik <rik@octave.org>
parents:
17769
diff
changeset
|
853 octave_idx_type step = r->get_step (); |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
854 octave_idx_type i, j; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
855 if (step == 1) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
856 for (i = start, j = start + len; i < j; i++) body (i); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
857 else if (step == -1) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
858 for (i = start, j = start - len; i > j; i--) body (i); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
859 else |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
860 for (i = 0, j = start; i < len; i++, j += step) body (j); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
861 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
862 break; |
10487 | 863 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
864 case class_scalar: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
865 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
866 idx_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
867 body (r->get_data ()); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
868 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
869 break; |
10487 | 870 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
871 case class_vector: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
872 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
873 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
874 const octave_idx_type *data = r->get_data (); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
875 for (octave_idx_type i = 0; i < len; i++) body (data[i]); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
876 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
877 break; |
10487 | 878 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
879 case class_mask: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
880 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
881 idx_mask_rep * r = dynamic_cast<idx_mask_rep *> (rep); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
882 const bool *data = r->get_data (); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
883 octave_idx_type ext = r->extent (0); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
884 for (octave_idx_type i = 0; i < ext; i++) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
885 if (data[i]) body (i); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
886 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
887 break; |
10487 | 888 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
889 default: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
890 assert (false); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
891 break; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
892 } |
8934
c2099a4d12ea
partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents:
8920
diff
changeset
|
893 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
894 } |
8934
c2099a4d12ea
partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents:
8920
diff
changeset
|
895 |
21751
b571fc85953f
maint: Use two spaces after period to indicate sentence break.
Rik <rik@octave.org>
parents:
21574
diff
changeset
|
896 // Generic breakable indexed loop. The loop body should be |
10487 | 897 // encapsulated in a single functor body. This is equivalent to the |
898 // following loop (but faster, at least for simple inlined bodies): | |
8290
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
899 // |
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
900 // for (octave_idx_type i = 0; i < idx->length (n); i++) |
8934
c2099a4d12ea
partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents:
8920
diff
changeset
|
901 // if (body (idx(i))) break; |
8290
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
902 // return i; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
903 // |
8290
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
904 |
21139
538b57866b90
consistently use "typename" intead of "class" in template declarations
John W. Eaton <jwe@octave.org>
parents:
21137
diff
changeset
|
905 template <typename Functor> |
8290
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
906 octave_idx_type |
8934
c2099a4d12ea
partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents:
8920
diff
changeset
|
907 bloop (octave_idx_type n, Functor body) const |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
908 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
909 octave_idx_type len = rep->length (n), ret; |
10487 | 910 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
911 switch (rep->idx_class ()) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
912 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
913 case class_colon: |
8290
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
914 { |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
915 octave_idx_type i; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
916 for (i = 0; i < len && body (i); i++) ; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
917 ret = i; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
918 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
919 break; |
10487 | 920 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
921 case class_range: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
922 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
923 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep); |
18084
8e056300994b
Follow coding convention of defining and initializing only 1 variable per line in liboctave.
Rik <rik@octave.org>
parents:
17769
diff
changeset
|
924 octave_idx_type start = r->get_start (); |
8e056300994b
Follow coding convention of defining and initializing only 1 variable per line in liboctave.
Rik <rik@octave.org>
parents:
17769
diff
changeset
|
925 octave_idx_type step = r->get_step (); |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
926 octave_idx_type i, j; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
927 if (step == 1) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
928 for (i = start, j = start + len; i < j && body (i); i++) ; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
929 else if (step == -1) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
930 for (i = start, j = start - len; i > j && body (i); i--) ; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
931 else |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
932 for (i = 0, j = start; i < len && body (j); i++, j += step) ; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
933 ret = i; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
934 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
935 break; |
10487 | 936 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
937 case class_scalar: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
938 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
939 idx_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
940 ret = body (r->get_data ()) ? 1 : 0; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
941 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
942 break; |
10487 | 943 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
944 case class_vector: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
945 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
946 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
947 const octave_idx_type *data = r->get_data (); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
948 octave_idx_type i; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
949 for (i = 0; i < len && body (data[i]); i++) ; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
950 ret = i; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
951 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
952 break; |
10487 | 953 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
954 case class_mask: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
955 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
956 idx_mask_rep * r = dynamic_cast<idx_mask_rep *> (rep); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
957 const bool *data = r->get_data (); |
18084
8e056300994b
Follow coding convention of defining and initializing only 1 variable per line in liboctave.
Rik <rik@octave.org>
parents:
17769
diff
changeset
|
958 octave_idx_type ext = r->extent (0); |
8e056300994b
Follow coding convention of defining and initializing only 1 variable per line in liboctave.
Rik <rik@octave.org>
parents:
17769
diff
changeset
|
959 octave_idx_type j = 0; |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
960 for (octave_idx_type i = 0; i < ext; i++) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
961 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
962 if (data[i]) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
963 { |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
964 if (body (i)) |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
965 break; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
966 else |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
967 j++; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
968 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
969 } |
9985
43a29eeda994
fix idx_vector::loop for masks
Jaroslav Hajek <highegg@gmail.com>
parents:
9894
diff
changeset
|
970 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
971 ret = j; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
972 } |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
973 break; |
10487 | 974 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
975 default: |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
976 assert (false); |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
977 break; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
978 } |
8290
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
979 |
17769
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
980 return ret; |
49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
Rik <rik@octave.org>
parents:
17744
diff
changeset
|
981 } |
8290
7cbe01c21986
improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents:
7573
diff
changeset
|
982 |
11586
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983 // Rationale: |
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984 // This method is the key to "smart indexing". When indexing cartesian |
10487 | 985 // arrays, sometimes consecutive index vectors can be reduced into a |
986 // single index. If rows (A) = k and i.maybe_reduce (j) gives k, then | |
987 // A(i,j)(:) is equal to A(k)(:). | |
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988 |
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989 // If the next index can be reduced, returns true and updates this. |
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990 bool maybe_reduce (octave_idx_type n, const idx_vector& j, |
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991 octave_idx_type nj); |
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992 |
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993 bool is_cont_range (octave_idx_type n, |
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994 octave_idx_type& l, octave_idx_type& u) const; |
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995 |
9725 | 996 // Returns the increment for ranges and colon, 0 for scalars and empty |
997 // vectors, 1st difference otherwise. | |
998 octave_idx_type increment (void) const; | |
999 | |
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1000 idx_vector |
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1001 complement (octave_idx_type n) const; |
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1002 |
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1003 bool is_permutation (octave_idx_type n) const; |
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1004 |
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1005 // Returns the inverse permutation. If this is not a permutation on 1:n, the |
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1006 // result is undefined (but no error unless extent () != n). |
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1007 idx_vector inverse_permutation (octave_idx_type n) const; |
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1008 |
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1009 // Copies all the indices to a given array. Not allowed for colons. |
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1010 void copy_data (octave_idx_type *data) const; |
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1011 |
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1012 // If the index is a mask, convert it to index vector. |
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1013 idx_vector unmask (void) const; |
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1014 |
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1015 // Unconverts the index to a scalar, Range, double array or a mask. |
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1016 void unconvert (idx_class_type& iclass, |
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1017 double& scalar, Range& range, |
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1018 Array<double>& array, Array<bool>& mask) const; |
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1019 |
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1020 Array<octave_idx_type> as_array (void) const; |
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1021 |
10487 | 1022 // Raw pointer to index array. This is non-const because it may be |
1023 // necessary to mutate the index. | |
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1024 const octave_idx_type *raw (void); |
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1025 |
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1026 bool is_vector (void) const; |
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1027 |
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1028 // FIXME: these are here for compatibility. They should be removed |
8333 | 1029 // when no longer in use. |
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1030 |
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1031 octave_idx_type elem (octave_idx_type n) const |
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1032 { return (*this) (n); } |
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1033 |
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1034 bool is_colon_equiv (octave_idx_type n, int) const |
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1035 { return is_colon_equiv (n); } |
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1036 |
8333 | 1037 octave_idx_type |
1038 freeze (octave_idx_type z_len, const char *tag, bool resize_ok = false); | |
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1039 |
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1040 void sort (bool uniq = false) |
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1041 { *this = sorted (uniq); } |
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1042 |
8333 | 1043 octave_idx_type ones_count (void) const; |
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1044 |
8333 | 1045 octave_idx_type max (void) const { return extent (1) - 1; } |
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1046 |
1 | 1047 private: |
1048 | |
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1049 idx_base_rep *rep; |
1 | 1050 |
1051 }; | |
1052 | |
1053 #endif | |
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1054 |