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annotate liboctave/idx-vector.h @ 9886:cddd5c3d5f04

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fix & extend special-case optimizations for indexed assignment
author Jaroslav Hajek <highegg@gmail.com>
date Sun, 29 Nov 2009 07:51:15 +0100
parents 034677ab6865
children 83bd7f34f9da
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1 /*
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2
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3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2002, 2003,
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4 2004, 2005, 2006, 2007 John W. Eaton
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5 Copyright (C) 2008, 2009 Jaroslav Hajek
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6 Copyright (C) 2009 VZLU Prague
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7
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8 This file is part of Octave.
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9
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10 Octave is free software; you can redistribute it and/or modify it
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11 under the terms of the GNU General Public License as published by the
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12 Free Software Foundation; either version 3 of the License, or (at your
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13 option) any later version.
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14
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15 Octave is distributed in the hope that it will be useful, but WITHOUT
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16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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18 for more details.
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19
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20 You should have received a copy of the GNU General Public License
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21 along with Octave; see the file COPYING. If not, see
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22 <http://www.gnu.org/licenses/>.
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24 */
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26 #if !defined (octave_idx_vector_h)
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27 #define octave_idx_vector_h 1
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29 #include <cassert>
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30
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31 #include <algorithm>
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32 #include <iosfwd>
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33
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34 #include "dim-vector.h"
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35 #include "oct-inttypes.h"
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36 #include "oct-alloc.h"
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37 #include "oct-mem.h"
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38
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39 template<class T> class Array;
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40 template<class T> class Sparse;
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41 class Range;
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42
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43 // Design rationale:
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44 // idx_vector is a reference-counting, polymorphic pointer, that can contain
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45 // 4 types of index objects: a magic colon, a range, a scalar, or an index vector.
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46 // Polymorphic methods for single element access are provided, as well as
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47 // templates implementing "early dispatch", i.e. hoisting the checks for index
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48 // type out of loops.
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49
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50 class
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51 OCTAVE_API
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52 idx_vector
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53 {
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54 public:
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55
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56 enum idx_class_type
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57 {
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58 class_invalid = -1,
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59 class_colon = 0,
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60 class_range,
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61 class_scalar,
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62 class_vector,
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63 class_mask
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64 };
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65
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66 private:
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67
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68 class OCTAVE_API idx_base_rep
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69 {
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70 public:
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71 idx_base_rep (void) : count (1), err (false) { }
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72
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73 virtual ~idx_base_rep (void) { }
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74
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75 // Non-range-checking element query.
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76 virtual octave_idx_type xelem (octave_idx_type i) const = 0;
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77
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78 // Range-checking element query.
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79 virtual octave_idx_type checkelem (octave_idx_type i) const = 0;
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80
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81 // Length of the index vector.
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82 virtual octave_idx_type length (octave_idx_type n) const = 0;
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83
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84 // The maximum index + 1. The actual dimension is passed in.
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85 virtual octave_idx_type extent (octave_idx_type n) const = 0;
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86
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87 // Index class.
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88 virtual idx_class_type idx_class (void) const { return class_invalid; }
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89
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90 // Sorts, maybe uniqifies, and returns a clone object pointer.
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91 virtual idx_base_rep *sort_uniq_clone (bool uniq = false) = 0;
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92
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93 // Checks whether the index is colon or a range equivalent to colon.
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94 virtual bool is_colon_equiv (octave_idx_type) const
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95 { return false; }
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96
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97 // The original dimensions of this object (used when subscribing by matrices).
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98 virtual dim_vector orig_dimensions (void) const
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99 { return dim_vector (); }
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100
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101 // i/o
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102 virtual std::ostream& print (std::ostream& os) const = 0;
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103
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104 int count;
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105
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106 bool err;
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107
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108 private:
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109
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110 // No copying!
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111 idx_base_rep (const idx_base_rep&);
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112 };
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113
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114 // The magic colon index.
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115 class OCTAVE_API idx_colon_rep : public idx_base_rep
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116 {
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117 public:
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118 idx_colon_rep (void) { }
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119
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120 idx_colon_rep (char c);
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121
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122 octave_idx_type xelem (octave_idx_type i) const
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123 { return i; }
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124
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125 octave_idx_type checkelem (octave_idx_type i) const;
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126
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127 octave_idx_type length (octave_idx_type n) const
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128 { return n; }
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129
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130 octave_idx_type extent (octave_idx_type n) const
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131 { return n; }
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132
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133 idx_class_type idx_class (void) const { return class_colon; }
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134
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135 idx_base_rep *sort_uniq_clone (bool = false)
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136 { count++; return this; }
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137
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138 bool is_colon_equiv (octave_idx_type) const
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139 { return true; }
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140
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141 std::ostream& print (std::ostream& os) const;
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142
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143 private:
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144
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145 DECLARE_OCTAVE_ALLOCATOR
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146
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147 // No copying!
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148 idx_colon_rep (const idx_colon_rep& idx);
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149 };
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150
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151 // To distinguish the "direct" constructors that blindly trust the data.
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152 enum direct { DIRECT };
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153
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154 // The integer range index.
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155 class OCTAVE_API idx_range_rep : public idx_base_rep
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156 {
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157 public:
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158 idx_range_rep (octave_idx_type _start, octave_idx_type _len,
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159 octave_idx_type _step, direct)
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160 : idx_base_rep (), start(_start), len(_len), step(_step) { }
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161
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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 // Zero-based constructor.
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166 idx_range_rep (octave_idx_type _start, octave_idx_type _limit,
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167 octave_idx_type _step);
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168
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169 idx_range_rep (const Range&);
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170
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171 octave_idx_type xelem (octave_idx_type i) const
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172 { return start + i * step; }
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173
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174 octave_idx_type checkelem (octave_idx_type i) const;
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175
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176 octave_idx_type length (octave_idx_type) const
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177 { return len; }
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178
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179 octave_idx_type extent (octave_idx_type n) const
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180 { return len ? std::max (n, (start + 1 + (step < 0 ? 0 : step * (len - 1)))) : n; }
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181
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182 idx_class_type idx_class (void) const { return class_range; }
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183
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184 idx_base_rep *sort_uniq_clone (bool uniq = false);
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185
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186 bool is_colon_equiv (octave_idx_type n) const
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187 { return start == 0 && step == 1 && len == n; }
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188
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189 dim_vector orig_dimensions (void) const
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190 { return dim_vector (1, len); }
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191
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192 octave_idx_type get_start (void) const { return start; }
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193
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194 octave_idx_type get_step (void) const { return step; }
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195
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196 std::ostream& print (std::ostream& os) const;
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197
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198 private:
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199
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200 DECLARE_OCTAVE_ALLOCATOR
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201
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202 // No copying!
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203 idx_range_rep (const idx_range_rep& idx);
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204
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205 octave_idx_type start, len, step;
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206
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207 };
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208
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209 // The integer scalar index.
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210 class OCTAVE_API idx_scalar_rep : public idx_base_rep
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211 {
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212 public:
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213 idx_scalar_rep (octave_idx_type i, direct)
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214 : data (i) { }
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215
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216 idx_scalar_rep (void)
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217 : data (0) { }
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218
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219 // Zero-based constructor.
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220 idx_scalar_rep (octave_idx_type i);
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221
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222 template <class T>
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223 idx_scalar_rep (T x);
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224
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225 octave_idx_type xelem (octave_idx_type) const
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226 { return data; }
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227
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228 octave_idx_type checkelem (octave_idx_type i) const;
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229
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230 octave_idx_type length (octave_idx_type) const
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231 { return 1; }
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232
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233 octave_idx_type extent (octave_idx_type n) const
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234 { return std::max (n, data + 1); }
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235
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236 idx_class_type idx_class (void) const { return class_scalar; }
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237
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238 idx_base_rep *sort_uniq_clone (bool = false)
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239 { count++; return this; }
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240
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241 bool is_colon_equiv (octave_idx_type n) const
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242 { return n == 1 && data == 0; }
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243
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244 dim_vector orig_dimensions (void) const
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245 { return dim_vector (1, 1); }
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246
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247 octave_idx_type get_data (void) const { return data; }
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248
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249 std::ostream& print (std::ostream& os) const;
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250
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251 private:
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252
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253 DECLARE_OCTAVE_ALLOCATOR
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254
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255 // No copying!
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256 idx_scalar_rep (const idx_scalar_rep& idx);
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257
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258 octave_idx_type data;
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259
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260 };
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261
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262 // The integer vector index.
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263 class OCTAVE_API idx_vector_rep : public idx_base_rep
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264 {
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265 public:
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266 // Direct constructor.
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267 idx_vector_rep (octave_idx_type *_data, octave_idx_type _len,
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268 octave_idx_type _ext, const dim_vector& od, direct)
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269 : data (_data), len (_len), ext (_ext), aowner (0), orig_dims (od) { }
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270
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271 idx_vector_rep (void)
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272 : data (0), len (0), aowner (0)
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273 { }
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274
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275 // Zero-based constructor.
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276 idx_vector_rep (const Array<octave_idx_type>& inda);
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277
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278 template <class T>
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279 idx_vector_rep (const Array<T>&);
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280
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281 idx_vector_rep (bool);
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282
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283 idx_vector_rep (const Array<bool>&, octave_idx_type = -1);
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284
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285 idx_vector_rep (const Sparse<bool>&);
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286
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287 ~idx_vector_rep (void);
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288
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289 octave_idx_type xelem (octave_idx_type i) const
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290 { return data[i]; }
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291
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292 octave_idx_type checkelem (octave_idx_type i) const;
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293
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294 octave_idx_type length (octave_idx_type) const
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295 { return len; }
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296
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297 octave_idx_type extent (octave_idx_type n) const
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298 { return std::max (n, ext); }
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299
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300 idx_class_type idx_class (void) const { return class_vector; }
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301
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302 idx_base_rep *sort_uniq_clone (bool uniq = false);
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303
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304 dim_vector orig_dimensions (void) const
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305 { return orig_dims; }
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306
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307 const octave_idx_type *get_data (void) const { return data; }
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308
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309 std::ostream& print (std::ostream& os) const;
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310
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311 private:
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312
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313 DECLARE_OCTAVE_ALLOCATOR
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314
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315 // No copying!
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316 idx_vector_rep (const idx_vector_rep& idx);
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317
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318 const octave_idx_type *data;
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319 octave_idx_type len, ext;
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320
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321 // This is a trick to allow user-given zero-based arrays to be used as indices
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322 // without copying. If the following pointer is nonzero, we do not own the data,
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323 // but rather have an Array<octave_idx_type> object that provides us the data.
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324 // Note that we need a pointer because we deferred the Array<T> declaration and
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325 // we do not want it yet to be defined.
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326
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327 Array<octave_idx_type> *aowner;
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328
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329 dim_vector orig_dims;
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330 };
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331
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332 // The logical mask index.
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333 class OCTAVE_API idx_mask_rep : public idx_base_rep
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334 {
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335 public:
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336 // Direct constructor.
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337 idx_mask_rep (bool *_data, octave_idx_type _len,
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338 octave_idx_type _ext, const dim_vector& od, direct)
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339 : data (_data), len (_len), ext (_ext), aowner (0), orig_dims (od) { }
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340
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341 idx_mask_rep (void)
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342 : data (0), len (0), aowner (0)
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343 { }
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344
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345 idx_mask_rep (bool);
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346
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347 idx_mask_rep (const Array<bool>&, octave_idx_type = -1);
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348
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349 ~idx_mask_rep (void);
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350
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351 octave_idx_type xelem (octave_idx_type i) const;
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352
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353 octave_idx_type checkelem (octave_idx_type i) const;
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354
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355 octave_idx_type length (octave_idx_type) const
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356 { return len; }
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357
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358 octave_idx_type extent (octave_idx_type n) const
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359 { return std::max (n, ext); }
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360
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361 idx_class_type idx_class (void) const { return class_mask; }
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362
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363 idx_base_rep *sort_uniq_clone (bool = false)
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364 { count++; return this; }
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365
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366 dim_vector orig_dimensions (void) const
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367 { return orig_dims; }
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368
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369 bool is_colon_equiv (octave_idx_type n) const
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370 { return len == n && ext == n; }
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371
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372 const bool *get_data (void) const { return data; }
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373
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374 std::ostream& print (std::ostream& os) const;
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375
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376 private:
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377
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378 DECLARE_OCTAVE_ALLOCATOR
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379
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380 // No copying!
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381 idx_mask_rep (const idx_mask_rep& idx);
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382
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383 const bool *data;
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384 octave_idx_type len, ext;
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385
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386 // FIXME: I'm not sure if this is a good design. Maybe it would be better to
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387 // employ some sort of generalized iteration scheme.
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388 mutable octave_idx_type lsti, lste;
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389
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390 // This is a trick to allow user-given mask arrays to be used as indices
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391 // without copying. If the following pointer is nonzero, we do not own the data,
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392 // but rather have an Array<bool> object that provides us the data.
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393 // Note that we need a pointer because we deferred the Array<T> declaration and
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394 // we do not want it yet to be defined.
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395
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396 Array<bool> *aowner;
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397
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398 dim_vector orig_dims;
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399 };
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400
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401 idx_vector (idx_base_rep *r) : rep (r) { }
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402
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403 // The shared empty vector representation (for fast default constructor)
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404 static idx_vector_rep *nil_rep (void)
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405 {
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406 static idx_vector_rep ivr;
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407 return &ivr;
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408 }
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409
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410 // The shared empty vector representation with the error flag set.
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411 static idx_vector_rep *err_rep (void)
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412 {
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413 static idx_vector_rep ivr;
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414 ivr.err = true;
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415 return &ivr;
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416 }
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417
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418 // If there was an error in constructing the rep, replace it with empty vector
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419 // for safety.
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420 void chkerr (void)
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421 {
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422 if (rep->err)
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423 {
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424 if (--rep->count == 0)
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425 delete rep;
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426 rep = err_rep ();
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427 rep->count++;
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428 }
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429 }
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430
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431 public:
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432
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433 // Fast empty constructor.
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434 idx_vector (void) : rep (nil_rep ()) { rep->count++; }
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435
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436 // Zero-based constructors (for use from C++).
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437 idx_vector (octave_idx_type i) : rep (new idx_scalar_rep (i))
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438 { chkerr (); }
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439
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440 idx_vector (octave_idx_type start, octave_idx_type limit,
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441 octave_idx_type step = 1)
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442 : rep (new idx_range_rep (start, limit, step))
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443 { chkerr (); }
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444
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445 static idx_vector
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446 make_range (octave_idx_type start, octave_idx_type step,
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447 octave_idx_type len)
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448 {
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449 return idx_vector (new idx_range_rep (start, len, step, DIRECT));
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450 }
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451
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452 idx_vector (const Array<octave_idx_type>& inda)
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453 : rep (new idx_vector_rep (inda))
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454 { chkerr (); }
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455
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456 // Colon is best constructed by simply copying (or referencing) this member.
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457 static const idx_vector colon;
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458
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459 // or passing ':' here
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460 idx_vector (char c) : rep (new idx_colon_rep (c)) { chkerr (); }
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461
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462 // Conversion constructors (used by interpreter).
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463
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464 template <class T>
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diff changeset
465 idx_vector (octave_int<T> x) : rep (new idx_scalar_rep (x)) { chkerr (); }
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diff changeset
466
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diff changeset
467 idx_vector (double x) : rep (new idx_scalar_rep (x)) { chkerr (); }
2386
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diff changeset
468
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diff changeset
469 idx_vector (float x) : rep (new idx_scalar_rep (x)) { chkerr (); }
3928
e8627dc4bdf2 [project @ 2002-05-03 19:56:01 by jwe]
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diff changeset
470
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471 // A scalar bool does not necessarily map to scalar index.
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472 idx_vector (bool x) : rep (new idx_mask_rep (x)) { chkerr (); }
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473
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diff changeset
474 template <class T>
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diff changeset
475 idx_vector (const Array<octave_int<T> >& nda) : rep (new idx_vector_rep (nda))
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476 { chkerr (); }
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477
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478 idx_vector (const Array<double>& nda) : rep (new idx_vector_rep (nda))
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diff changeset
479 { chkerr (); }
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92826d6e8bd9 [project @ 1997-03-25 23:41:41 by jwe]
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480
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diff changeset
481 idx_vector (const Array<float>& nda) : rep (new idx_vector_rep (nda))
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482 { chkerr (); }
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703d97b89507 [project @ 2004-08-09 20:21:59 by jwe]
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483
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484 idx_vector (const Array<bool>& nda);
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485
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486 idx_vector (const Range& r)
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487 : rep (new idx_range_rep (r))
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488 { chkerr (); }
2828
92826d6e8bd9 [project @ 1997-03-25 23:41:41 by jwe]
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489
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490 idx_vector (const Sparse<bool>& nda) : rep (new idx_vector_rep (nda))
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491 { chkerr (); }
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492
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493 idx_vector (const idx_vector& a) : rep (a.rep) { rep->count++; }
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494
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495 ~idx_vector (void)
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496 {
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497 if (--rep->count == 0)
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498 delete rep;
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
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499 }
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500
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501 idx_vector& operator = (const idx_vector& a)
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502 {
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
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503 if (this != &a)
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504 {
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505 if (--rep->count == 0)
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diff changeset
506 delete rep;
1
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parents:
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507
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diff changeset
508 rep = a.rep;
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diff changeset
509 rep->count++;
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
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diff changeset
510 }
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
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diff changeset
511 return *this;
1551
8f63ee44726c [project @ 1995-10-08 23:19:55 by jwe]
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diff changeset
512 }
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513
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diff changeset
514 idx_class_type idx_class (void) const { return rep->idx_class (); }
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515
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516 octave_idx_type length (octave_idx_type n = 0) const
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517 { return rep->length (n); }
191
b6b4d8c513fe [project @ 1993-10-29 23:41:39 by jwe]
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diff changeset
518
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519 octave_idx_type extent (octave_idx_type n) const
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520 { return rep->extent (n); }
1
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521
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522 octave_idx_type xelem (octave_idx_type n) const
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523 { return rep->xelem (n); }
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524
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525 octave_idx_type checkelem (octave_idx_type n) const
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diff changeset
526 { return rep->checkelem (n); }
1551
8f63ee44726c [project @ 1995-10-08 23:19:55 by jwe]
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527
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diff changeset
528 octave_idx_type operator () (octave_idx_type n) const
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529 {
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530 #if defined (BOUNDS_CHECKING)
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531 return rep->checkelem (n);
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532 #else
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533 return rep->xelem (n);
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534 #endif
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535 }
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536
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537 operator bool (void) const
8290
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538 { return ! rep->err; }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
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539
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diff changeset
540 bool is_colon (void) const
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541 { return rep->idx_class () == class_colon; }
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542
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543 bool is_scalar (void) const
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544 { return rep->idx_class () == class_scalar; }
1
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545
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diff changeset
546 bool is_range (void) const
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547 { return rep->idx_class () == class_range; }
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diff changeset
548
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diff changeset
549 bool is_colon_equiv (octave_idx_type n) const
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550 { return rep->is_colon_equiv (n); }
3079
eb827eb9b8ff [project @ 1997-08-03 20:44:07 by jwe]
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diff changeset
551
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diff changeset
552 idx_vector sorted (bool uniq = false) const
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diff changeset
553 { return idx_vector (rep->sort_uniq_clone (uniq)); }
208
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parents: 191
diff changeset
554
4653
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diff changeset
555 dim_vector orig_dimensions (void) const { return rep->orig_dimensions (); }
4504
f6a61399bc5c [project @ 2003-09-09 17:48:00 by jwe]
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parents: 4461
diff changeset
556
8333
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diff changeset
557 octave_idx_type orig_rows (void) const
8290
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diff changeset
558 { return orig_dimensions () (0); }
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diff changeset
559
8333
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diff changeset
560 octave_idx_type orig_columns (void) const
8290
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561 { return orig_dimensions () (1); }
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diff changeset
562
2663
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parents: 2386
diff changeset
563 int orig_empty (void) const
4653
14ab7b05a572 [project @ 2003-11-24 05:02:46 by jwe]
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parents: 4650
diff changeset
564 { return (! is_colon () && orig_dimensions().any_zero ()); }
2663
00b2eff19bf5 [project @ 1997-02-08 21:58:49 by jwe]
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diff changeset
565
4653
14ab7b05a572 [project @ 2003-11-24 05:02:46 by jwe]
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parents: 4650
diff changeset
566 // i/o
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
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parents:
diff changeset
567
3504
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
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parents: 3503
diff changeset
568 std::ostream& print (std::ostream& os) const { return rep->print (os); }
1560
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
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diff changeset
569
3504
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
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diff changeset
570 friend std::ostream& operator << (std::ostream& os, const idx_vector& a)
1560
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
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parents: 1553
diff changeset
571 { return a.print (os); }
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
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parents: 1553
diff changeset
572
8290
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diff changeset
573 // Slice with specializations. No checking of bounds!
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diff changeset
574 //
7cbe01c21986 improve dense array indexing
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diff changeset
575 // This is equivalent to the following loop (but much faster):
7cbe01c21986 improve dense array indexing
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diff changeset
576 //
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diff changeset
577 // for (octave_idx_type i = 0; i < idx->length (n); i++)
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diff changeset
578 // dest[i] = src[idx(i)];
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diff changeset
579 // return i;
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diff changeset
580 //
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diff changeset
581 template <class T>
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diff changeset
582 octave_idx_type
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diff changeset
583 index (const T *src, octave_idx_type n, T *dest) const
7cbe01c21986 improve dense array indexing
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diff changeset
584 {
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diff changeset
585 octave_idx_type len = rep->length (n);
7cbe01c21986 improve dense array indexing
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diff changeset
586 switch (rep->idx_class ())
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diff changeset
587 {
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diff changeset
588 case class_colon:
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6dafc60dde31 rename oct-mem functions
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diff changeset
589 copy_or_memcpy (len, src, dest);
8290
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diff changeset
590 break;
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diff changeset
591 case class_range:
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diff changeset
592 {
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diff changeset
593 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep);
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diff changeset
594 octave_idx_type start = r->get_start (), step = r->get_step ();
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diff changeset
595 const T *ssrc = src + start;
7cbe01c21986 improve dense array indexing
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diff changeset
596 if (step == 1)
9780
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diff changeset
597 copy_or_memcpy (len, ssrc, dest);
8290
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diff changeset
598 else if (step == -1)
7cbe01c21986 improve dense array indexing
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diff changeset
599 std::reverse_copy (ssrc - len + 1, ssrc + 1, dest);
8972
5fa53d1b6247 more indexing optimizations
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diff changeset
600 else if (step == 0)
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diff changeset
601 std::fill_n (dest, len, *ssrc);
8290
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diff changeset
602 else
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diff changeset
603 {
7cbe01c21986 improve dense array indexing
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diff changeset
604 for (octave_idx_type i = 0, j = 0; i < len; i++, j += step)
7cbe01c21986 improve dense array indexing
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diff changeset
605 dest[i] = ssrc[j];
7cbe01c21986 improve dense array indexing
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diff changeset
606 }
7cbe01c21986 improve dense array indexing
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diff changeset
607 }
7cbe01c21986 improve dense array indexing
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diff changeset
608 break;
7cbe01c21986 improve dense array indexing
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diff changeset
609 case class_scalar:
7cbe01c21986 improve dense array indexing
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diff changeset
610 {
7cbe01c21986 improve dense array indexing
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diff changeset
611 idx_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep);
7cbe01c21986 improve dense array indexing
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diff changeset
612 dest[0] = src[r->get_data ()];
7cbe01c21986 improve dense array indexing
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diff changeset
613 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
614 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
615 case class_vector:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
616 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
617 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
618 const octave_idx_type *data = r->get_data ();
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
619 for (octave_idx_type i = 0; i < len; i++)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
620 dest[i] = src[data[i]];
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
621 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
622 break;
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
623 case class_mask:
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
624 {
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
625 idx_mask_rep * r = dynamic_cast<idx_mask_rep *> (rep);
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
626 const bool *data = r->get_data ();
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
627 octave_idx_type ext = r->extent (0);
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
628 for (octave_idx_type i = 0; i < ext; i++)
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
629 if (data[i]) *dest++ = src[i];
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
630 }
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
631 break;
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
632 default:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
633 assert (false);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
634 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
635 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
636
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
637 return len;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
638 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
639
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
640 // Slice assignment with specializations. No checking of bounds!
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
641 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
642 // This is equivalent to the following loop (but much faster):
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
643 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
644 // 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
645 // dest[idx(i)] = src[i];
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
646 // return i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
647 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
648 template <class T>
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
649 octave_idx_type
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
650 assign (const T *src, octave_idx_type n, T *dest) const
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
651 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
652 octave_idx_type len = rep->length (n);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
653 switch (rep->idx_class ())
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
654 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
655 case class_colon:
9780
6dafc60dde31 rename oct-mem functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9773
diff changeset
656 copy_or_memcpy (len, src, dest);
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
657 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
658 case class_range:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
659 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
660 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
661 octave_idx_type start = r->get_start (), step = r->get_step ();
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
662 T *sdest = dest + start;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
663 if (step == 1)
9780
6dafc60dde31 rename oct-mem functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9773
diff changeset
664 copy_or_memcpy (len, src, sdest);
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
665 else if (step == -1)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
666 std::reverse_copy (src, src + len, sdest - len + 1);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
667 else
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
668 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
669 for (octave_idx_type i = 0, j = 0; i < len; i++, j += step)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
670 sdest[j] = src[i];
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
671 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
672 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
673 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
674 case class_scalar:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
675 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
676 idx_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
677 dest[r->get_data ()] = src[0];
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
678 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
679 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
680 case class_vector:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
681 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
682 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
683 const octave_idx_type *data = r->get_data ();
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
684 for (octave_idx_type i = 0; i < len; i++)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
685 dest[data[i]] = src[i];
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
686 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
687 break;
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
688 case class_mask:
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
689 {
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
690 idx_mask_rep * r = dynamic_cast<idx_mask_rep *> (rep);
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
691 const bool *data = r->get_data ();
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
692 octave_idx_type ext = r->extent (0);
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
693 for (octave_idx_type i = 0; i < ext; i++)
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
694 if (data[i]) dest[i] = *src++;
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
695 }
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
696 break;
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
697 default:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
698 assert (false);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
699 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
700 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
701
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
702 return len;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
703 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
704
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
705 // Slice fill with specializations. No checking of bounds!
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
706 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
707 // This is equivalent to the following loop (but much faster):
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
708 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
709 // 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
710 // dest[idx(i)] = val;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
711 // return i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
712 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
713 template <class T>
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
714 octave_idx_type
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
715 fill (const T& val, octave_idx_type n, T *dest) const
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
716 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
717 octave_idx_type len = rep->length (n);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
718 switch (rep->idx_class ())
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
719 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
720 case class_colon:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
721 std::fill (dest, dest + len, val);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
722 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
723 case class_range:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
724 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
725 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
726 octave_idx_type start = r->get_start (), step = r->get_step ();
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
727 T *sdest = dest + start;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
728 if (step == 1)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
729 std::fill (sdest, sdest + len, val);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
730 else if (step == -1)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
731 std::fill (sdest - len + 1, sdest + 1, val);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
732 else
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
733 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
734 for (octave_idx_type i = 0, j = 0; i < len; i++, j += step)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
735 sdest[j] = val;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
736 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
737 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
738 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
739 case class_scalar:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
740 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
741 idx_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
742 dest[r->get_data ()] = val;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
743 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
744 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
745 case class_vector:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
746 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
747 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
748 const octave_idx_type *data = r->get_data ();
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
749 for (octave_idx_type i = 0; i < len; i++)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
750 dest[data[i]] = val;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
751 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
752 break;
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
753 case class_mask:
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
754 {
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
755 idx_mask_rep * r = dynamic_cast<idx_mask_rep *> (rep);
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
756 const bool *data = r->get_data ();
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
757 octave_idx_type ext = r->extent (0);
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
758 for (octave_idx_type i = 0; i < ext; i++)
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
759 if (data[i]) dest[i] = val;
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
760 }
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
761 break;
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
762 default:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
763 assert (false);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
764 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
765 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
766
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
767 return len;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
768 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
769
8934
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
770 // Generic non-breakable indexed loop. The loop body should be encapsulated in a
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
771 // single functor body.
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
772 // This is equivalent to the following loop (but faster, at least for simple
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
773 // inlined bodies):
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
774 //
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
775 // 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
776 //
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
777
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
778 template <class Functor>
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
779 void
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
780 loop (octave_idx_type n, Functor body) const
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
781 {
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
782 octave_idx_type len = rep->length (n);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
783 switch (rep->idx_class ())
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
784 {
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
785 case class_colon:
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
786 for (octave_idx_type i = 0; i < len; i++) body (i);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
787 break;
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
788 case class_range:
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
789 {
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
790 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
791 octave_idx_type start = r->get_start (), step = r->get_step ();
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
792 octave_idx_type i, j;
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
793 if (step == 1)
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
794 for (i = start, j = start + len; i < j; i++) body (i);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
795 else if (step == -1)
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
796 for (i = start, j = start - len; i > j; i--) body (i);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
797 else
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
798 for (i = 0, j = start; i < len; i++, j += step) body (j);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
799 }
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
800 break;
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
801 case class_scalar:
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
802 {
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
803 idx_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
804 body (r->get_data ());
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
805 }
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
806 break;
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
807 case class_vector:
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
808 {
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
809 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
810 const octave_idx_type *data = r->get_data ();
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
811 for (octave_idx_type i = 0; i < len; i++) body (data[i]);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
812 }
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
813 break;
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
814 case class_mask:
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
815 {
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
816 idx_mask_rep * r = dynamic_cast<idx_mask_rep *> (rep);
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
817 const bool *data = r->get_data ();
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
818 octave_idx_type ext = r->extent (0);
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
819 for (octave_idx_type i = 0, j = 0; i < ext; i++)
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
820 if (data[i]) body (j++);
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
821 }
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
822 break;
8934
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
823 default:
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
824 assert (false);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
825 break;
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
826 }
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
827
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
828 }
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
829
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
830 // Generic breakable indexed loop. The loop body should be encapsulated in a
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
831 // single functor body.
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
832 // This is equivalent to the following loop (but faster, at least for simple
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
833 // inlined bodies):
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
834 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
835 // 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
836 // if (body (idx(i))) break;
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
837 // return i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
838 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
839
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
840 template <class Functor>
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
841 octave_idx_type
8934
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
842 bloop (octave_idx_type n, Functor body) const
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
843 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
844 octave_idx_type len = rep->length (n), ret;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
845 switch (rep->idx_class ())
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
846 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
847 case class_colon:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
848 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
849 octave_idx_type i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
850 for (i = 0; i < len && body (i); i++) ;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
851 ret = i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
852 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
853 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
854 case class_range:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
855 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
856 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
857 octave_idx_type start = r->get_start (), step = r->get_step ();
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
858 octave_idx_type i, j;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
859 if (step == 1)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
860 for (i = start, j = start + len; i < j && body (i); i++) ;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
861 else if (step == -1)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
862 for (i = start, j = start - len; i > j && body (i); i--) ;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
863 else
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
864 for (i = 0, j = start; i < len && body (j); i++, j += step) ;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
865 ret = i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
866 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
867 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
868 case class_scalar:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
869 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
870 idx_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
871 ret = body (r->get_data ()) ? 1 : 0;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
872 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
873 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
874 case class_vector:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
875 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
876 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep);
8934
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
877 const octave_idx_type *data = r->get_data ();
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
878 octave_idx_type i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
879 for (i = 0; i < len && body (data[i]); i++) ;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
880 ret = i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
881 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
882 break;
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
883 case class_mask:
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
884 {
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
885 idx_mask_rep * r = dynamic_cast<idx_mask_rep *> (rep);
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
886 const bool *data = r->get_data ();
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
887 octave_idx_type ext = r->extent (0), j = 0;
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
888 for (octave_idx_type i = 0; i < ext; i++)
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
889 if (data[i] && body (j++))
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
890 break;
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
891 ret = j;
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
892 }
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
893 break;
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
894 default:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
895 assert (false);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
896 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
897 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
898
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
899 return ret;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
900 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
901
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
902 // Rationale:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
903 // This method is the key to "smart indexing". When indexing cartesian
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
904 // arrays, sometimes consecutive index vectors can be reduced into a single
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
905 // index. If rows (A) = k and i.maybe_reduce (j) gives k, then A(i,j)(:) is
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
906 // equal to A(k)(:).
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
907
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
908 // If the next index can be reduced, returns true and updates this.
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
909 bool maybe_reduce (octave_idx_type n, const idx_vector& j,
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
910 octave_idx_type nj);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
911
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
912 bool is_cont_range (octave_idx_type n,
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
913 octave_idx_type& l, octave_idx_type& u) const;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
914
9725
aea3a3a950e1 implement nth_element
Jaroslav Hajek <highegg@gmail.com>
parents: 9601
diff changeset
915 // Returns the increment for ranges and colon, 0 for scalars and empty
aea3a3a950e1 implement nth_element
Jaroslav Hajek <highegg@gmail.com>
parents: 9601
diff changeset
916 // vectors, 1st difference otherwise.
aea3a3a950e1 implement nth_element
Jaroslav Hajek <highegg@gmail.com>
parents: 9601
diff changeset
917 octave_idx_type increment (void) const;
aea3a3a950e1 implement nth_element
Jaroslav Hajek <highegg@gmail.com>
parents: 9601
diff changeset
918
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
919 idx_vector
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
920 complement (octave_idx_type n) const;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
921
8367
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 8333
diff changeset
922 bool is_permutation (octave_idx_type n) const;
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 8333
diff changeset
923
9479
d9716e3ee0dd supply optimized compiled sub2ind & ind2sub
Jaroslav Hajek <highegg@gmail.com>
parents: 8972
diff changeset
924 // Copies all the indices to a given array. Not allowed for colons.
d9716e3ee0dd supply optimized compiled sub2ind & ind2sub
Jaroslav Hajek <highegg@gmail.com>
parents: 8972
diff changeset
925 void copy_data (octave_idx_type *data) const;
d9716e3ee0dd supply optimized compiled sub2ind & ind2sub
Jaroslav Hajek <highegg@gmail.com>
parents: 8972
diff changeset
926
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
927 // If the index is a mask, convert it to index vector.
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
928 idx_vector unmask (void) const;
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
929
9479
d9716e3ee0dd supply optimized compiled sub2ind & ind2sub
Jaroslav Hajek <highegg@gmail.com>
parents: 8972
diff changeset
930 // Unconverts the index to a scalar, Range or double array.
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
931 // Note that the index class can be changed, if it's a mask index.
9479
d9716e3ee0dd supply optimized compiled sub2ind & ind2sub
Jaroslav Hajek <highegg@gmail.com>
parents: 8972
diff changeset
932 void unconvert (idx_class_type& iclass,
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
933 double& scalar, Range& range, Array<double>& array);
9479
d9716e3ee0dd supply optimized compiled sub2ind & ind2sub
Jaroslav Hajek <highegg@gmail.com>
parents: 8972
diff changeset
934
8333
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8319
diff changeset
935 // FIXME -- these are here for compatibility. They should be removed
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8319
diff changeset
936 // when no longer in use.
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
937
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
938 octave_idx_type elem (octave_idx_type n) const
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
939 { return (*this) (n); }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
940
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
941 bool is_colon_equiv (octave_idx_type n, int) const
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
942 { return is_colon_equiv (n); }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
943
8333
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8319
diff changeset
944 octave_idx_type
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8319
diff changeset
945 freeze (octave_idx_type z_len, const char *tag, bool resize_ok = false);
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
946
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
947 void sort (bool uniq = false)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
948 { *this = sorted (uniq); }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
949
8333
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8319
diff changeset
950 octave_idx_type ones_count (void) const;
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
951
8333
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8319
diff changeset
952 octave_idx_type max (void) const { return extent (1) - 1; }
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
953
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
954 private:
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
955
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
956 idx_base_rep *rep;
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
957
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
958 };
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
959
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
960 #endif
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
961
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
962 /*
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
963 ;;; Local Variables: ***
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
964 ;;; mode: C++ ***
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
965 ;;; End: ***
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
966 */