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annotate liboctave/array/Array-b.cc @ 21574:ae4d7dfea337

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maint: merge stable to default.
author John W. Eaton <jwe@octave.org>
date Fri, 01 Apr 2016 12:57:49 -0400
parents 40de9f8f23a6 f3f8e1d3e399
children aba2e6293dd8
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1 /*
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2
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3 Copyright (C) 1996-2015 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
8ed4362aa0d6 [project @ 1996-11-11 02:35:04 by jwe]
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23 #ifdef HAVE_CONFIG_H
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24 # include "config.h"
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25 #endif
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26
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27 // Instantiate Arrays of bool values.
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28
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29 #include "Array.h"
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30 #include "Array.cc"
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31
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32 #define INLINE_ASCENDING_SORT 1
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33 #define INLINE_DESCENDING_SORT 1
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34 #include "oct-sort.cc"
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35
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36 // Prevent implicit instantiations on some systems (Windows, others?)
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37 // that can lead to duplicate definitions of static data members.
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38
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39 extern template class OCTAVE_API Array<idx_vector>;
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40 extern template class OCTAVE_API Array<octave_idx_type>;
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41
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42 // Specialize bool sorting (aka stable partitioning).
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43
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44 template <bool desc>
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45 static void do_bool_partition (bool *data, octave_idx_type nel)
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46 {
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47 octave_idx_type k = 0;
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48 for (octave_idx_type i = 0; i < nel; i++)
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49 if (data[i] == desc)
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50 data[k++] = desc;
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51 for (octave_idx_type i = k; i < nel; i++)
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52 data[i] = ! desc;
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53 }
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54
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55 template <bool desc>
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56 static void do_bool_partition (bool *data, octave_idx_type *idx,
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57 octave_idx_type nel)
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58 {
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59 // FIXME: This is essentially a simple bucket sort.
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60 // Can it be efficiently done by std::partition?
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61 OCTAVE_LOCAL_BUFFER (octave_idx_type, jdx, nel);
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62 octave_idx_type k = 0;
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63 octave_idx_type l = 0;
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64 for (octave_idx_type i = 0; i < nel; i++)
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65 {
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66 if (data[i] == desc)
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67 {
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68 data[k] = desc;
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69 idx[k++] = idx[i];
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70 }
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71 else
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72 jdx[l++] = idx[i];
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73 }
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74
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75 for (octave_idx_type i = k; i < nel; i++)
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76 {
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77 data[i] = ! desc;
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78 idx[i] = jdx[i-k];
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79 }
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80 }
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81
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82 template <>
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83 template <>
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84 void
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85 octave_sort<bool>::sort (bool *data, octave_idx_type nel,
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86 std::less<bool>)
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87 {
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88 do_bool_partition<false> (data, nel);
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89 }
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90
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91 template <>
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92 template <>
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93 void
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94 octave_sort<bool>::sort (bool *data, octave_idx_type nel,
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95 std::greater<bool>)
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96 {
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97 do_bool_partition<true> (data, nel);
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98 }
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99
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100 template <>
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101 template <>
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102 void
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103 octave_sort<bool>::sort (bool *data, octave_idx_type *idx, octave_idx_type nel,
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104 std::less<bool>)
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105 {
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106 do_bool_partition<false> (data, idx, nel);
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107 }
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108
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109 template <>
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110 template <>
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111 void
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112 octave_sort<bool>::sort (bool *data, octave_idx_type *idx, octave_idx_type nel,
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113 std::greater<bool>)
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114 {
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115 do_bool_partition<true> (data, idx, nel);
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116 }
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117
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118 template class OCTAVE_API octave_sort<bool>;
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119
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120 INSTANTIATE_ARRAY (bool, OCTAVE_API);
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121
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122 template OCTAVE_API std::ostream& operator << (std::ostream&,
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123 const Array<bool>&);
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124
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125 #include "DiagArray2.h"
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126 #include "DiagArray2.cc"
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127
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128 template class OCTAVE_API DiagArray2<bool>;