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annotate liboctave/idx-vector.h @ 12770:3666e8e6f96e stable release-3-4-2

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Version 3.4.2 released. * configure.ac (AC_INIT): Version is now 3.4.2. (OCTAVE_RELEASE_DATE): Now 2011-06-24.
author John W. Eaton <jwe@octave.org>
date Fri, 24 Jun 2011 10:36:40 -0400
parents a21a3875ca83
children d13b6086aea9
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1 /*
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2
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3 Copyright (C) 1993-2011 John W. Eaton
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4 Copyright (C) 2008-2009 Jaroslav Hajek
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5 Copyright (C) 2009 VZLU Prague
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6
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7 This file is part of Octave.
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8
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
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9 Octave is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published by the
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11 Free Software Foundation; either version 3 of the License, or (at your
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12 option) any later version.
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13
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14 Octave is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with Octave; see the file COPYING. If not, see
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21 <http://www.gnu.org/licenses/>.
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23 */
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25 #if !defined (octave_idx_vector_h)
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26 #define octave_idx_vector_h 1
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28 #include <cassert>
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29
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30 #include <algorithm>
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31 #include <iosfwd>
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32
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33 #include "dim-vector.h"
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34 #include "oct-inttypes.h"
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35 #include "oct-alloc.h"
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36 #include "oct-mem.h"
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37 #include "oct-refcount.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 // Sorts, and returns a sorting permutation (aka Array::sort).
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93 virtual idx_base_rep *sort_idx (Array<octave_idx_type>&) = 0;
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94
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95 // Checks whether the index is colon or a range equivalent to colon.
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96 virtual bool is_colon_equiv (octave_idx_type) const { return false; }
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97
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98 // The original dimensions of this object (used when subscribing by matrices).
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99 virtual dim_vector orig_dimensions (void) const { 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 virtual Array<octave_idx_type> as_array (void);
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105
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106 octave_refcount<int> count;
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107
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108 bool err;
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109
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110 private:
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111
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112 // No copying!
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113 idx_base_rep (const idx_base_rep&);
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114 idx_base_rep& operator = (const idx_base_rep&);
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115 };
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116
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117 // The magic colon index.
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118 class OCTAVE_API idx_colon_rep : public idx_base_rep
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119 {
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120 public:
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121 idx_colon_rep (void) { }
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122
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123 idx_colon_rep (char c);
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124
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125 octave_idx_type xelem (octave_idx_type i) const { return i; }
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126
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127 octave_idx_type checkelem (octave_idx_type i) const;
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128
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129 octave_idx_type length (octave_idx_type n) const { return n; }
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130
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131 octave_idx_type extent (octave_idx_type n) const { 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 idx_base_rep *sort_idx (Array<octave_idx_type>&);
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139
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140 bool is_colon_equiv (octave_idx_type) const { return true; }
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141
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142 std::ostream& print (std::ostream& os) const;
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144 private:
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145
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146 DECLARE_OCTAVE_ALLOCATOR
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147
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148 // No copying!
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149 idx_colon_rep (const idx_colon_rep& idx);
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150 idx_colon_rep& operator = (const idx_colon_rep& idx);
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151 };
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152
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153 // To distinguish the "direct" constructors that blindly trust the data.
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154 enum direct { DIRECT };
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155
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156 // The integer range index.
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157 class OCTAVE_API idx_range_rep : public idx_base_rep
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158 {
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159 public:
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160 idx_range_rep (octave_idx_type _start, octave_idx_type _len,
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161 octave_idx_type _step, direct)
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162 : idx_base_rep (), start(_start), len(_len), step(_step) { }
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163
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164 idx_range_rep (void)
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165 : start(0), len(0), step(1) { }
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166
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167 // Zero-based constructor.
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168 idx_range_rep (octave_idx_type _start, octave_idx_type _limit,
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169 octave_idx_type _step);
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170
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171 idx_range_rep (const Range&);
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172
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173 octave_idx_type xelem (octave_idx_type i) const
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174 { return start + i * step; }
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175
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176 octave_idx_type checkelem (octave_idx_type i) const;
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177
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178 octave_idx_type length (octave_idx_type) const { return len; }
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179
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180 octave_idx_type extent (octave_idx_type n) const
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181 { return len ? std::max (n, (start + 1 + (step < 0 ? 0 : step * (len - 1)))) : n; }
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182
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183 idx_class_type idx_class (void) const { return class_range; }
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184
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185 idx_base_rep *sort_uniq_clone (bool uniq = false);
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186
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187 idx_base_rep *sort_idx (Array<octave_idx_type>&);
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188
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189 bool is_colon_equiv (octave_idx_type n) const
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190 { return start == 0 && step == 1 && len == n; }
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191
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192 dim_vector orig_dimensions (void) const
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193 { return dim_vector (1, len); }
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194
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195 octave_idx_type get_start (void) const { return start; }
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196
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197 octave_idx_type get_step (void) const { return step; }
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198
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199 std::ostream& print (std::ostream& os) const;
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200
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201 Range unconvert (void) const;
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202
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203 Array<octave_idx_type> as_array (void);
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204
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205 private:
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206
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207 DECLARE_OCTAVE_ALLOCATOR
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208
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209 // No copying!
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210 idx_range_rep (const idx_range_rep& idx);
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211 idx_range_rep& operator = (const idx_range_rep& idx);
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212
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213 octave_idx_type start, len, step;
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214
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215 };
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216
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217 // The integer scalar index.
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218 class OCTAVE_API idx_scalar_rep : public idx_base_rep
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219 {
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220 public:
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221 idx_scalar_rep (octave_idx_type i, direct)
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222 : data (i) { }
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223
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224 idx_scalar_rep (void)
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225 : data (0) { }
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226
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227 // Zero-based constructor.
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228 idx_scalar_rep (octave_idx_type i);
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229
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230 template <class T>
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231 idx_scalar_rep (T x);
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232
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233 octave_idx_type xelem (octave_idx_type) const { return data; }
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234
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235 octave_idx_type checkelem (octave_idx_type i) const;
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236
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237 octave_idx_type length (octave_idx_type) const { return 1; }
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238
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239 octave_idx_type extent (octave_idx_type n) const
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240 { return std::max (n, data + 1); }
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241
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242 idx_class_type idx_class (void) const { return class_scalar; }
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243
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244 idx_base_rep *sort_uniq_clone (bool = false)
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245 { count++; return this; }
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246
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247 idx_base_rep *sort_idx (Array<octave_idx_type>&);
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248
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249 bool is_colon_equiv (octave_idx_type n) const
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250 { return n == 1 && data == 0; }
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251
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252 dim_vector orig_dimensions (void) const { return dim_vector (1, 1); }
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253
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254 octave_idx_type get_data (void) const { return data; }
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255
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256 std::ostream& print (std::ostream& os) const;
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257
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258 double unconvert (void) const;
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259
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260 Array<octave_idx_type> as_array (void);
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261
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262 private:
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263
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264 DECLARE_OCTAVE_ALLOCATOR
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265
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266 // No copying!
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267 idx_scalar_rep (const idx_scalar_rep& idx);
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268 idx_scalar_rep& operator = (const idx_scalar_rep& idx);
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269
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270 octave_idx_type data;
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271
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272 };
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273
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274 // The integer vector index.
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275 class OCTAVE_API idx_vector_rep : public idx_base_rep
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276 {
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277 public:
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278 // Direct constructor.
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279 idx_vector_rep (octave_idx_type *_data, octave_idx_type _len,
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280 octave_idx_type _ext, const dim_vector& od, direct)
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281 : data (_data), len (_len), ext (_ext), aowner (0), orig_dims (od) { }
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282
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283 idx_vector_rep (void)
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284 : data (0), len (0), ext (0), aowner (0), orig_dims ()
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285 { }
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286
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287 // Zero-based constructor.
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288 idx_vector_rep (const Array<octave_idx_type>& inda);
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289
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290 idx_vector_rep (const Array<octave_idx_type>& inda,
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291 octave_idx_type _ext, direct);
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292
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293 template <class T>
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294 idx_vector_rep (const Array<T>&);
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295
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296 idx_vector_rep (bool);
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297
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298 idx_vector_rep (const Array<bool>&, octave_idx_type = -1);
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299
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300 idx_vector_rep (const Sparse<bool>&);
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301
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302 ~idx_vector_rep (void);
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303
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304 octave_idx_type xelem (octave_idx_type i) const { return data[i]; }
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305
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306 octave_idx_type checkelem (octave_idx_type i) const;
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307
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308 octave_idx_type length (octave_idx_type) const { return len; }
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309
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310 octave_idx_type extent (octave_idx_type n) const
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311 { return std::max (n, ext); }
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312
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313 idx_class_type idx_class (void) const { return class_vector; }
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314
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315 idx_base_rep *sort_uniq_clone (bool uniq = false);
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316
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317 idx_base_rep *sort_idx (Array<octave_idx_type>&);
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318
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319 dim_vector orig_dimensions (void) const { return orig_dims; }
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320
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321 const octave_idx_type *get_data (void) const { return data; }
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322
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323 std::ostream& print (std::ostream& os) const;
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324
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325 Array<double> unconvert (void) const;
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326
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327 Array<octave_idx_type> as_array (void);
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328
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329 private:
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330
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331 DECLARE_OCTAVE_ALLOCATOR
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332
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333 // No copying!
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334 idx_vector_rep (const idx_vector_rep& idx);
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335 idx_vector_rep& operator = (const idx_vector_rep& idx);
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336
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337 const octave_idx_type *data;
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338 octave_idx_type len;
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339 octave_idx_type ext;
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340
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341 // This is a trick to allow user-given zero-based arrays to be used
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342 // as indices without copying. If the following pointer is nonzero,
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343 // we do not own the data, but rather have an Array<octave_idx_type>
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344 // object that provides us the data. Note that we need a pointer
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345 // because we deferred the Array<T> declaration and we do not want
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346 // it yet to be defined.
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347
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348 Array<octave_idx_type> *aowner;
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349
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350 dim_vector orig_dims;
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351 };
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352
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353 // The logical mask index.
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354 class OCTAVE_API idx_mask_rep : public idx_base_rep
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355 {
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356 public:
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357 // Direct constructor.
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358 idx_mask_rep (bool *_data, octave_idx_type _len,
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359 octave_idx_type _ext, const dim_vector& od, direct)
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360 : data (_data), len (_len), ext (_ext), lsti (-1), lste (-1),
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361 aowner (0), orig_dims (od) { }
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362
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363 idx_mask_rep (void)
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364 : data (0), len (0), ext (0), lsti (-1), lste (-1), aowner (0),
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365 orig_dims ()
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366 { }
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367
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368 idx_mask_rep (bool);
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369
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370 idx_mask_rep (const Array<bool>&, octave_idx_type = -1);
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371
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372 ~idx_mask_rep (void);
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373
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374 octave_idx_type xelem (octave_idx_type i) const;
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375
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376 octave_idx_type checkelem (octave_idx_type i) const;
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377
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378 octave_idx_type length (octave_idx_type) const { return len; }
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379
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380 octave_idx_type extent (octave_idx_type n) const
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381 { return std::max (n, ext); }
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382
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383 idx_class_type idx_class (void) const { return class_mask; }
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384
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385 idx_base_rep *sort_uniq_clone (bool = false)
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386 { count++; return this; }
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387
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388 idx_base_rep *sort_idx (Array<octave_idx_type>&);
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389
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390 dim_vector orig_dimensions (void) const { return orig_dims; }
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391
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392 bool is_colon_equiv (octave_idx_type n) const
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393 { return len == n && ext == n; }
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394
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395 const bool *get_data (void) const { return data; }
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396
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397 std::ostream& print (std::ostream& os) const;
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398
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399 Array<bool> unconvert (void) const;
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400
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401 Array<octave_idx_type> as_array (void);
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402
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403 private:
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404
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405 DECLARE_OCTAVE_ALLOCATOR
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406
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407 // No copying!
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408 idx_mask_rep (const idx_mask_rep& idx);
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409 idx_mask_rep& operator = (const idx_mask_rep& idx);
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410
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411 const bool *data;
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412 octave_idx_type len;
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413 octave_idx_type ext;
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414
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415 // FIXME: I'm not sure if this is a good design. Maybe it would be
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416 // better to employ some sort of generalized iteration scheme.
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417 mutable octave_idx_type lsti;
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418 mutable octave_idx_type lste;
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419
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420 // This is a trick to allow user-given mask arrays to be used as
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421 // indices without copying. If the following pointer is nonzero, we
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422 // do not own the data, but rather have an Array<bool> object that
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423 // provides us the data. Note that we need a pointer because we
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424 // deferred the Array<T> declaration and we do not want it yet to be
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425 // defined.
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426
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427 Array<bool> *aowner;
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428
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429 dim_vector orig_dims;
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430 };
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431
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432 idx_vector (idx_base_rep *r) : rep (r) { }
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433
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434 // The shared empty vector representation (for fast default
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435 // constructor).
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436 static idx_vector_rep *nil_rep (void)
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437 {
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438 static idx_vector_rep ivr;
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439 return &ivr;
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440 }
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441
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442 // The shared empty vector representation with the error flag set.
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443 static idx_vector_rep *err_rep (void)
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diff changeset
444 {
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diff changeset
445 static idx_vector_rep ivr;
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diff changeset
446 ivr.err = true;
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447 return &ivr;
7cbe01c21986 improve dense array indexing
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diff changeset
448 }
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diff changeset
449
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diff changeset
450 // If there was an error in constructing the rep, replace it with
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diff changeset
451 // empty vector for safety.
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diff changeset
452 void chkerr (void)
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453 {
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diff changeset
454 if (rep->err)
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diff changeset
455 {
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diff changeset
456 if (--rep->count == 0)
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457 delete rep;
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diff changeset
458 rep = err_rep ();
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diff changeset
459 rep->count++;
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460 }
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diff changeset
461 }
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diff changeset
462
1
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463 public:
1551
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464
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diff changeset
465 // Fast empty constructor.
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diff changeset
466 idx_vector (void) : rep (nil_rep ()) { rep->count++; }
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467
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diff changeset
468 // Zero-based constructors (for use from C++).
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diff changeset
469 idx_vector (octave_idx_type i) : rep (new idx_scalar_rep (i))
8290
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470 { chkerr (); }
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diff changeset
471
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diff changeset
472 idx_vector (octave_idx_type start, octave_idx_type limit,
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diff changeset
473 octave_idx_type step = 1)
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diff changeset
474 : rep (new idx_range_rep (start, limit, step))
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diff changeset
475 { chkerr (); }
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diff changeset
476
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diff changeset
477 static idx_vector
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diff changeset
478 make_range (octave_idx_type start, octave_idx_type step,
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diff changeset
479 octave_idx_type len)
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diff changeset
480 {
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diff changeset
481 return idx_vector (new idx_range_rep (start, len, step, DIRECT));
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482 }
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diff changeset
483
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diff changeset
484 idx_vector (const Array<octave_idx_type>& inda)
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diff changeset
485 : rep (new idx_vector_rep (inda))
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diff changeset
486 { chkerr (); }
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diff changeset
487
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diff changeset
488 // Directly pass extent, no checking.
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diff changeset
489 idx_vector (const Array<octave_idx_type>& inda, octave_idx_type ext)
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diff changeset
490 : rep (new idx_vector_rep (inda, ext, DIRECT))
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diff changeset
491 { }
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diff changeset
492
8290
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diff changeset
493 // Colon is best constructed by simply copying (or referencing) this member.
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diff changeset
494 static const idx_vector colon;
4938
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495
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diff changeset
496 // or passing ':' here
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diff changeset
497 idx_vector (char c) : rep (new idx_colon_rep (c)) { chkerr (); }
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diff changeset
498
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diff changeset
499 // Conversion constructors (used by interpreter).
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diff changeset
500
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diff changeset
501 template <class T>
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diff changeset
502 idx_vector (octave_int<T> x) : rep (new idx_scalar_rep (x)) { chkerr (); }
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diff changeset
503
7cbe01c21986 improve dense array indexing
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diff changeset
504 idx_vector (double x) : rep (new idx_scalar_rep (x)) { chkerr (); }
2386
4fc9fd1424a9 [project @ 1996-10-12 18:31:34 by jwe]
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parents: 2356
diff changeset
505
8290
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diff changeset
506 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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parents: 3504
diff changeset
507
8290
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diff changeset
508 // A scalar bool does not necessarily map to scalar index.
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034677ab6865 smarter treatment of mask indexing
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diff changeset
509 idx_vector (bool x) : rep (new idx_mask_rep (x)) { chkerr (); }
1560
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diff changeset
510
8290
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diff changeset
511 template <class T>
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diff changeset
512 idx_vector (const Array<octave_int<T> >& nda) : rep (new idx_vector_rep (nda))
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diff changeset
513 { chkerr (); }
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diff changeset
514
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diff changeset
515 idx_vector (const Array<double>& nda) : rep (new idx_vector_rep (nda))
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diff changeset
516 { chkerr (); }
2828
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diff changeset
517
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diff changeset
518 idx_vector (const Array<float>& nda) : rep (new idx_vector_rep (nda))
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diff changeset
519 { chkerr (); }
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520
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521 idx_vector (const Array<bool>& nda);
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diff changeset
522
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diff changeset
523 idx_vector (const Range& r)
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diff changeset
524 : rep (new idx_range_rep (r))
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diff changeset
525 { chkerr (); }
2828
92826d6e8bd9 [project @ 1997-03-25 23:41:41 by jwe]
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parents: 2802
diff changeset
526
8384
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parents: 8367
diff changeset
527 idx_vector (const Sparse<bool>& nda) : rep (new idx_vector_rep (nda))
a99b9113c58c optimize sparse bool indexing
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diff changeset
528 { chkerr (); }
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parents: 8367
diff changeset
529
4979
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parents: 4938
diff changeset
530 idx_vector (const idx_vector& a) : rep (a.rep) { rep->count++; }
1551
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parents: 1315
diff changeset
531
2802
bca5fbab2e52 [project @ 1997-03-09 11:02:27 by jwe]
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parents: 2800
diff changeset
532 ~idx_vector (void)
1560
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parents: 1553
diff changeset
533 {
8290
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diff changeset
534 if (--rep->count == 0)
10312
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parents: 10285
diff changeset
535 delete rep;
1560
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diff changeset
536 }
1
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parents:
diff changeset
537
1560
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parents: 1553
diff changeset
538 idx_vector& operator = (const idx_vector& a)
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
jwe
parents: 1553
diff changeset
539 {
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
jwe
parents: 1553
diff changeset
540 if (this != &a)
10312
cbc402e64d83 untabify liboctave header files
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parents: 10285
diff changeset
541 {
cbc402e64d83 untabify liboctave header files
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parents: 10285
diff changeset
542 if (--rep->count == 0)
cbc402e64d83 untabify liboctave header files
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parents: 10285
diff changeset
543 delete rep;
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
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parents:
diff changeset
544
10312
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parents: 10285
diff changeset
545 rep = a.rep;
cbc402e64d83 untabify liboctave header files
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parents: 10285
diff changeset
546 rep->count++;
cbc402e64d83 untabify liboctave header files
John W. Eaton <jwe@octave.org>
parents: 10285
diff changeset
547 }
1560
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parents: 1553
diff changeset
548 return *this;
1551
8f63ee44726c [project @ 1995-10-08 23:19:55 by jwe]
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parents: 1315
diff changeset
549 }
8f63ee44726c [project @ 1995-10-08 23:19:55 by jwe]
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parents: 1315
diff changeset
550
8290
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diff changeset
551 idx_class_type idx_class (void) const { return rep->idx_class (); }
1560
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
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diff changeset
552
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parents: 11523
diff changeset
553 octave_idx_type length (octave_idx_type n = 0) const
8290
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diff changeset
554 { return rep->length (n); }
191
b6b4d8c513fe [project @ 1993-10-29 23:41:39 by jwe]
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parents: 164
diff changeset
555
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diff changeset
556 octave_idx_type extent (octave_idx_type n) const
8290
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parents: 7573
diff changeset
557 { return rep->extent (n); }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
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parents:
diff changeset
558
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parents: 11523
diff changeset
559 octave_idx_type xelem (octave_idx_type n) const
8290
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diff changeset
560 { return rep->xelem (n); }
7cbe01c21986 improve dense array indexing
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parents: 7573
diff changeset
561
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diff changeset
562 octave_idx_type checkelem (octave_idx_type n) const
8290
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parents: 7573
diff changeset
563 { return rep->checkelem (n); }
1551
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jwe
parents: 1315
diff changeset
564
11586
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parents: 11523
diff changeset
565 octave_idx_type operator () (octave_idx_type n) const
8290
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parents: 7573
diff changeset
566 {
7cbe01c21986 improve dense array indexing
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parents: 7573
diff changeset
567 #if defined (BOUNDS_CHECKING)
11586
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parents: 11523
diff changeset
568 return rep->checkelem (n);
8290
7cbe01c21986 improve dense array indexing
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parents: 7573
diff changeset
569 #else
7cbe01c21986 improve dense array indexing
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parents: 7573
diff changeset
570 return rep->xelem (n);
7cbe01c21986 improve dense array indexing
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diff changeset
571 #endif
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
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diff changeset
572 }
7cbe01c21986 improve dense array indexing
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parents: 7573
diff changeset
573
8333
9238637cb81c style fixes
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parents: 8319
diff changeset
574 operator bool (void) const
8290
7cbe01c21986 improve dense array indexing
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parents: 7573
diff changeset
575 { return ! rep->err; }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
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parents:
diff changeset
576
11586
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John W. Eaton <jwe@octave.org>
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diff changeset
577 bool is_colon (void) const
8290
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Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
578 { return rep->idx_class () == class_colon; }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
579
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diff changeset
580 bool is_scalar (void) const
8290
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parents: 7573
diff changeset
581 { return rep->idx_class () == class_scalar; }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
582
9479
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parents: 8972
diff changeset
583 bool is_range (void) const
d9716e3ee0dd supply optimized compiled sub2ind & ind2sub
Jaroslav Hajek <highegg@gmail.com>
parents: 8972
diff changeset
584 { return rep->idx_class () == class_range; }
d9716e3ee0dd supply optimized compiled sub2ind & ind2sub
Jaroslav Hajek <highegg@gmail.com>
parents: 8972
diff changeset
585
8290
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parents: 7573
diff changeset
586 bool is_colon_equiv (octave_idx_type n) const
7cbe01c21986 improve dense array indexing
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parents: 7573
diff changeset
587 { return rep->is_colon_equiv (n); }
3079
eb827eb9b8ff [project @ 1997-08-03 20:44:07 by jwe]
jwe
parents: 2847
diff changeset
588
8290
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parents: 7573
diff changeset
589 idx_vector sorted (bool uniq = false) const
7cbe01c21986 improve dense array indexing
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parents: 7573
diff changeset
590 { return idx_vector (rep->sort_uniq_clone (uniq)); }
208
380cb9ccc889 [project @ 1993-11-12 10:35:05 by jwe]
jwe
parents: 191
diff changeset
591
10273
3a8c13b71612 implement special-case optimization for sort of index vectors
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parents: 10158
diff changeset
592 idx_vector sorted (Array<octave_idx_type>& sidx) const
3a8c13b71612 implement special-case optimization for sort of index vectors
Jaroslav Hajek <highegg@gmail.com>
parents: 10158
diff changeset
593 { return idx_vector (rep->sort_idx (sidx)); }
3a8c13b71612 implement special-case optimization for sort of index vectors
Jaroslav Hajek <highegg@gmail.com>
parents: 10158
diff changeset
594
4653
14ab7b05a572 [project @ 2003-11-24 05:02:46 by jwe]
jwe
parents: 4650
diff changeset
595 dim_vector orig_dimensions (void) const { return rep->orig_dimensions (); }
4504
f6a61399bc5c [project @ 2003-09-09 17:48:00 by jwe]
jwe
parents: 4461
diff changeset
596
8333
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8319
diff changeset
597 octave_idx_type orig_rows (void) const
8290
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parents: 7573
diff changeset
598 { return orig_dimensions () (0); }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
599
8333
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8319
diff changeset
600 octave_idx_type orig_columns (void) const
8290
7cbe01c21986 improve dense array indexing
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parents: 7573
diff changeset
601 { return orig_dimensions () (1); }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
602
2663
00b2eff19bf5 [project @ 1997-02-08 21:58:49 by jwe]
jwe
parents: 2386
diff changeset
603 int orig_empty (void) const
4653
14ab7b05a572 [project @ 2003-11-24 05:02:46 by jwe]
jwe
parents: 4650
diff changeset
604 { return (! is_colon () && orig_dimensions().any_zero ()); }
2663
00b2eff19bf5 [project @ 1997-02-08 21:58:49 by jwe]
jwe
parents: 2386
diff changeset
605
4653
14ab7b05a572 [project @ 2003-11-24 05:02:46 by jwe]
jwe
parents: 4650
diff changeset
606 // i/o
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
607
3504
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 3503
diff changeset
608 std::ostream& print (std::ostream& os) const { return rep->print (os); }
1560
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
jwe
parents: 1553
diff changeset
609
3504
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 3503
diff changeset
610 friend std::ostream& operator << (std::ostream& os, const idx_vector& a)
1560
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
jwe
parents: 1553
diff changeset
611 { return a.print (os); }
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
jwe
parents: 1553
diff changeset
612
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
613 // Slice with specializations. No checking of bounds!
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
614 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
615 // This is equivalent to the following loop (but much faster):
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 // 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
618 // dest[i] = src[idx(i)];
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
619 // return i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
620 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
621 template <class T>
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
622 octave_idx_type
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
623 index (const T *src, octave_idx_type n, T *dest) const
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
624 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
625 octave_idx_type len = rep->length (n);
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
626
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
627 switch (rep->idx_class ())
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
628 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
629 case class_colon:
9780
6dafc60dde31 rename oct-mem functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9773
diff changeset
630 copy_or_memcpy (len, src, dest);
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
631 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
632
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
633 case class_range:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
634 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
635 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
636 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
637 const T *ssrc = src + start;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
638 if (step == 1)
9780
6dafc60dde31 rename oct-mem functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9773
diff changeset
639 copy_or_memcpy (len, ssrc, dest);
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
640 else if (step == -1)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
641 std::reverse_copy (ssrc - len + 1, ssrc + 1, dest);
8972
5fa53d1b6247 more indexing optimizations
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
642 else if (step == 0)
5fa53d1b6247 more indexing optimizations
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
643 std::fill_n (dest, len, *ssrc);
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
644 else
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
645 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
646 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
647 dest[i] = ssrc[j];
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
648 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
649 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
650 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
651
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
652 case class_scalar:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
653 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
654 idx_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
655 dest[0] = src[r->get_data ()];
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
656 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
657 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
658
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
659 case class_vector:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
660 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
661 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
662 const octave_idx_type *data = r->get_data ();
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
663 for (octave_idx_type i = 0; i < len; i++)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
664 dest[i] = src[data[i]];
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
665 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
666 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
667
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
668 case class_mask:
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
669 {
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
670 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
671 const bool *data = r->get_data ();
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
672 octave_idx_type ext = r->extent (0);
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
673 for (octave_idx_type i = 0; i < ext; i++)
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
674 if (data[i]) *dest++ = src[i];
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
675 }
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
676 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
677
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
678 default:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
679 assert (false);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
680 break;
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
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
683 return len;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
684 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
685
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
686 // Slice assignment with specializations. No checking of bounds!
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
687 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
688 // This is equivalent to the following loop (but much faster):
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
689 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
690 // 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
691 // dest[idx(i)] = src[i];
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
692 // return i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
693 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
694 template <class T>
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
695 octave_idx_type
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
696 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
697 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
698 octave_idx_type len = rep->length (n);
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
699
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
700 switch (rep->idx_class ())
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 case class_colon:
9780
6dafc60dde31 rename oct-mem functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9773
diff changeset
703 copy_or_memcpy (len, src, dest);
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
704 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
705
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
706 case class_range:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
707 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
708 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
709 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
710 T *sdest = dest + start;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
711 if (step == 1)
9780
6dafc60dde31 rename oct-mem functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9773
diff changeset
712 copy_or_memcpy (len, src, sdest);
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
713 else if (step == -1)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
714 std::reverse_copy (src, src + len, sdest - len + 1);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
715 else
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 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
718 sdest[j] = src[i];
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 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
721 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
722
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
723 case class_scalar:
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_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
726 dest[r->get_data ()] = src[0];
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
727 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
728 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
729
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
730 case class_vector:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
731 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
732 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
733 const octave_idx_type *data = r->get_data ();
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
734 for (octave_idx_type i = 0; i < len; i++)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
735 dest[data[i]] = src[i];
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 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
738
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
739 case class_mask:
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
740 {
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
741 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
742 const bool *data = r->get_data ();
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
743 octave_idx_type ext = r->extent (0);
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
744 for (octave_idx_type i = 0; i < ext; i++)
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
745 if (data[i]) dest[i] = *src++;
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
746 }
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
747 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
748
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
749 default:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
750 assert (false);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
751 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
752 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
753
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
754 return len;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
755 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
756
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
757 // Slice fill with specializations. No checking of bounds!
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
758 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
759 // This is equivalent to the following loop (but much faster):
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
760 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
761 // 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
762 // dest[idx(i)] = val;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
763 // return i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
764 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
765 template <class T>
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
766 octave_idx_type
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
767 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
768 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
769 octave_idx_type len = rep->length (n);
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
770
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
771 switch (rep->idx_class ())
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
772 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
773 case class_colon:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
774 std::fill (dest, dest + len, val);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
775 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
776
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
777 case class_range:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
778 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
779 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
780 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
781 T *sdest = dest + start;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
782 if (step == 1)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
783 std::fill (sdest, sdest + len, val);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
784 else if (step == -1)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
785 std::fill (sdest - len + 1, sdest + 1, val);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
786 else
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
787 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
788 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
789 sdest[j] = val;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
790 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
791 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
792 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
793
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
794 case class_scalar:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
795 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
796 idx_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
797 dest[r->get_data ()] = val;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
798 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
799 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
800
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
801 case class_vector:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
802 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
803 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
804 const octave_idx_type *data = r->get_data ();
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
805 for (octave_idx_type i = 0; i < len; i++)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
806 dest[data[i]] = val;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
807 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
808 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
809
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
810 case class_mask:
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
811 {
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
812 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
813 const bool *data = r->get_data ();
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
814 octave_idx_type ext = r->extent (0);
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
815 for (octave_idx_type i = 0; i < ext; i++)
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
816 if (data[i]) dest[i] = val;
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
817 }
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
818 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
819
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
820 default:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
821 assert (false);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
822 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
823 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
824
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
825 return len;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
826 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
827
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
828 // Generic non-breakable indexed loop. The loop body should be
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
829 // encapsulated in a single functor body. This is equivalent to the
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
830 // following loop (but faster, at least for simple inlined bodies):
8934
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
831 //
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
832 // 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
833
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
834 template <class Functor>
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
835 void
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
836 loop (octave_idx_type n, Functor body) const
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
837 {
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
838 octave_idx_type len = rep->length (n);
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
839
8934
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
840 switch (rep->idx_class ())
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
841 {
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
842 case class_colon:
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
843 for (octave_idx_type i = 0; i < len; i++) body (i);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
844 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
845
8934
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
846 case class_range:
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
847 {
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
848 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
849 octave_idx_type start = r->get_start (), step = r->get_step ();
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
850 octave_idx_type i, j;
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
851 if (step == 1)
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
852 for (i = start, j = start + len; i < j; i++) body (i);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
853 else if (step == -1)
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
854 for (i = start, j = start - len; i > j; i--) body (i);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
855 else
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
856 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
857 }
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
858 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
859
8934
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
860 case class_scalar:
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
861 {
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
862 idx_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
863 body (r->get_data ());
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
864 }
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
865 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
866
8934
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
867 case class_vector:
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
868 {
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
869 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
870 const octave_idx_type *data = r->get_data ();
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
871 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
872 }
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
873 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
874
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
875 case class_mask:
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
876 {
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
877 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
878 const bool *data = r->get_data ();
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
879 octave_idx_type ext = r->extent (0);
9985
43a29eeda994 fix idx_vector::loop for masks
Jaroslav Hajek <highegg@gmail.com>
parents: 9894
diff changeset
880 for (octave_idx_type i = 0; i < ext; i++)
43a29eeda994 fix idx_vector::loop for masks
Jaroslav Hajek <highegg@gmail.com>
parents: 9894
diff changeset
881 if (data[i]) body (i);
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
882 }
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
883 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
884
8934
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
885 default:
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
886 assert (false);
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
887 break;
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
888 }
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
889
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
890 }
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
891
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
892 // Generic breakable indexed loop. The loop body should be
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
893 // encapsulated in a single functor body. This is equivalent to the
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
894 // following loop (but faster, at least for simple inlined bodies):
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
895 //
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
896 // 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
897 // if (body (idx(i))) break;
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
898 // return i;
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
899 //
8290
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 template <class Functor>
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
902 octave_idx_type
8934
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
903 bloop (octave_idx_type n, Functor body) const
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
904 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
905 octave_idx_type len = rep->length (n), ret;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
906
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
907 switch (rep->idx_class ())
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
908 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
909 case class_colon:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
910 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
911 octave_idx_type i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
912 for (i = 0; i < len && body (i); i++) ;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
913 ret = i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
914 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
915 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
916
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
917 case class_range:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
918 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
919 idx_range_rep * r = dynamic_cast<idx_range_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
920 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
921 octave_idx_type i, j;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
922 if (step == 1)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
923 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
924 else if (step == -1)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
925 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
926 else
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
927 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
928 ret = i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
929 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
930 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
931
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
932 case class_scalar:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
933 {
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
934 idx_scalar_rep * r = dynamic_cast<idx_scalar_rep *> (rep);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
935 ret = body (r->get_data ()) ? 1 : 0;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
936 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
937 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
938
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
939 case class_vector:
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 idx_vector_rep * r = dynamic_cast<idx_vector_rep *> (rep);
8934
c2099a4d12ea partially optimize accumarray
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
942 const octave_idx_type *data = r->get_data ();
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
943 octave_idx_type i;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
944 for (i = 0; i < len && body (data[i]); i++) ;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
945 ret = i;
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 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
948
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
949 case class_mask:
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
950 {
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
951 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
952 const bool *data = r->get_data ();
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
953 octave_idx_type ext = r->extent (0), j = 0;
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
954 for (octave_idx_type i = 0; i < ext; i++)
9985
43a29eeda994 fix idx_vector::loop for masks
Jaroslav Hajek <highegg@gmail.com>
parents: 9894
diff changeset
955 {
43a29eeda994 fix idx_vector::loop for masks
Jaroslav Hajek <highegg@gmail.com>
parents: 9894
diff changeset
956 if (data[i])
43a29eeda994 fix idx_vector::loop for masks
Jaroslav Hajek <highegg@gmail.com>
parents: 9894
diff changeset
957 {
43a29eeda994 fix idx_vector::loop for masks
Jaroslav Hajek <highegg@gmail.com>
parents: 9894
diff changeset
958 if (body (i))
43a29eeda994 fix idx_vector::loop for masks
Jaroslav Hajek <highegg@gmail.com>
parents: 9894
diff changeset
959 break;
43a29eeda994 fix idx_vector::loop for masks
Jaroslav Hajek <highegg@gmail.com>
parents: 9894
diff changeset
960 else
43a29eeda994 fix idx_vector::loop for masks
Jaroslav Hajek <highegg@gmail.com>
parents: 9894
diff changeset
961 j++;
43a29eeda994 fix idx_vector::loop for masks
Jaroslav Hajek <highegg@gmail.com>
parents: 9894
diff changeset
962 }
43a29eeda994 fix idx_vector::loop for masks
Jaroslav Hajek <highegg@gmail.com>
parents: 9894
diff changeset
963 }
43a29eeda994 fix idx_vector::loop for masks
Jaroslav Hajek <highegg@gmail.com>
parents: 9894
diff changeset
964
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
965 ret = j;
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
966 }
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
967 break;
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
968
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
969 default:
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
970 assert (false);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
971 break;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
972 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
973
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
974 return ret;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
975 }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
976
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
977 // Rationale:
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
978 // This method is the key to "smart indexing". When indexing cartesian
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
979 // arrays, sometimes consecutive index vectors can be reduced into a
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
980 // single index. If rows (A) = k and i.maybe_reduce (j) gives k, then
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
981 // A(i,j)(:) is equal to A(k)(:).
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
982
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
983 // 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
984 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
985 octave_idx_type nj);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
986
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
987 bool is_cont_range (octave_idx_type n,
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
988 octave_idx_type& l, octave_idx_type& u) const;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
989
9725
aea3a3a950e1 implement nth_element
Jaroslav Hajek <highegg@gmail.com>
parents: 9601
diff changeset
990 // 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
991 // vectors, 1st difference otherwise.
aea3a3a950e1 implement nth_element
Jaroslav Hajek <highegg@gmail.com>
parents: 9601
diff changeset
992 octave_idx_type increment (void) const;
aea3a3a950e1 implement nth_element
Jaroslav Hajek <highegg@gmail.com>
parents: 9601
diff changeset
993
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
994 idx_vector
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
995 complement (octave_idx_type n) const;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
996
8367
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 8333
diff changeset
997 bool is_permutation (octave_idx_type n) const;
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 8333
diff changeset
998
10512
aac9f4265048 rewrite sparse indexed assignment
Jaroslav Hajek <highegg@gmail.com>
parents: 10489
diff changeset
999 // Returns the inverse permutation. If this is not a permutation on 1:n, the
aac9f4265048 rewrite sparse indexed assignment
Jaroslav Hajek <highegg@gmail.com>
parents: 10489
diff changeset
1000 // result is undefined (but no error unless extent () != n).
aac9f4265048 rewrite sparse indexed assignment
Jaroslav Hajek <highegg@gmail.com>
parents: 10489
diff changeset
1001 idx_vector inverse_permutation (octave_idx_type n) const;
aac9f4265048 rewrite sparse indexed assignment
Jaroslav Hajek <highegg@gmail.com>
parents: 10489
diff changeset
1002
9479
d9716e3ee0dd supply optimized compiled sub2ind & ind2sub
Jaroslav Hajek <highegg@gmail.com>
parents: 8972
diff changeset
1003 // 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
1004 void copy_data (octave_idx_type *data) const;
d9716e3ee0dd supply optimized compiled sub2ind & ind2sub
Jaroslav Hajek <highegg@gmail.com>
parents: 8972
diff changeset
1005
9879
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
1006 // 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
1007 idx_vector unmask (void) const;
034677ab6865 smarter treatment of mask indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9780
diff changeset
1008
9894
83bd7f34f9da improve idx_vector->octave_value conversion
Jaroslav Hajek <highegg@gmail.com>
parents: 9886
diff changeset
1009 // Unconverts the index to a scalar, Range, double array or a mask.
9479
d9716e3ee0dd supply optimized compiled sub2ind & ind2sub
Jaroslav Hajek <highegg@gmail.com>
parents: 8972
diff changeset
1010 void unconvert (idx_class_type& iclass,
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
1011 double& scalar, Range& range,
9894
83bd7f34f9da improve idx_vector->octave_value conversion
Jaroslav Hajek <highegg@gmail.com>
parents: 9886
diff changeset
1012 Array<double>& array, Array<bool>& mask) const;
10339
de2d43bcb083 optimize some lazy index operations
Jaroslav Hajek <highegg@gmail.com>
parents: 10312
diff changeset
1013
de2d43bcb083 optimize some lazy index operations
Jaroslav Hajek <highegg@gmail.com>
parents: 10312
diff changeset
1014 Array<octave_idx_type> as_array (void) const;
10475
739109ef88ee helper idx_vector methods
Jaroslav Hajek <highegg@gmail.com>
parents: 10425
diff changeset
1015
10487
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
1016 // Raw pointer to index array. This is non-const because it may be
942386d6d1a5 style fixes
John W. Eaton <jwe@octave.org>
parents: 10486
diff changeset
1017 // necessary to mutate the index.
10475
739109ef88ee helper idx_vector methods
Jaroslav Hajek <highegg@gmail.com>
parents: 10425
diff changeset
1018 const octave_idx_type *raw (void);
10516
f0266ee4aabe optimize some special indexing & assignment cases
Jaroslav Hajek <highegg@gmail.com>
parents: 10512
diff changeset
1019
f0266ee4aabe optimize some special indexing & assignment cases
Jaroslav Hajek <highegg@gmail.com>
parents: 10512
diff changeset
1020 bool is_vector (void) const;
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
1021
8333
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8319
diff changeset
1022 // FIXME -- these are here for compatibility. They should be removed
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8319
diff changeset
1023 // when no longer in use.
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
1024
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
1025 octave_idx_type elem (octave_idx_type n) const
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
1026 { return (*this) (n); }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
1027
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
1028 bool is_colon_equiv (octave_idx_type n, int) const
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
1029 { return is_colon_equiv (n); }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
1030
8333
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8319
diff changeset
1031 octave_idx_type
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8319
diff changeset
1032 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
1033
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
1034 void sort (bool uniq = false)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
1035 { *this = sorted (uniq); }
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
1036
8333
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8319
diff changeset
1037 octave_idx_type ones_count (void) const;
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
1038
8333
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8319
diff changeset
1039 octave_idx_type max (void) const { return extent (1) - 1; }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
1040
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1041 private:
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1042
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 7573
diff changeset
1043 idx_base_rep *rep;
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1044
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1045 };
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1046
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1047 #endif