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annotate src/ov-lazy-idx.h @ 10339:de2d43bcb083

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optimize some lazy index operations
author Jaroslav Hajek <highegg@gmail.com>
date Fri, 19 Feb 2010 11:47:47 +0100
parents 8b3cfc1288e2
children cc2bc3f46cd4
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1 /*
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2
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3 Copyright (C) 2010 VZLU Prague
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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
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23 #if !defined (octave_lazy_idx_h)
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24 #define octave_lazy_idx_h 1
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25
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26 #include "ov-re-mat.h"
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27
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28 // Lazy indices that stay in idx_vector form until the conversion to NDArray is
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29 // actually needed.
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30
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31 class
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32 OCTINTERP_API
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33 octave_lazy_index : public octave_base_value
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34 {
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35 public:
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36
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37 octave_lazy_index (void)
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38 : octave_base_value () { }
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39
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40 octave_lazy_index (const idx_vector& idx)
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41 : octave_base_value (), index (idx) { }
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42
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43 octave_lazy_index (const octave_lazy_index& i)
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44 : octave_base_value (), index (i.index), value (i.value) { }
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45
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46 ~octave_lazy_index (void) { }
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47
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48 octave_base_value *clone (void) const { return new octave_lazy_index (*this); }
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49 octave_base_value *empty_clone (void) const { return new octave_matrix (); }
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50
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51 type_conv_info numeric_conversion_function (void) const;
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52
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53 octave_base_value *try_narrowing_conversion (void);
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54
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55 size_t byte_size (void) const { return numel () * sizeof (octave_idx_type); }
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56
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57 octave_value squeeze (void) const;
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58
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59 octave_value full_value (void) const { return make_value (); }
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60
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61 idx_vector index_vector (void) const
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62 { return index; }
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63
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64 builtin_type_t builtin_type (void) const { return btyp_double; }
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65
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66 bool is_real_matrix (void) const { return true; }
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67
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68 bool is_real_type (void) const { return true; }
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69
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70 bool is_double_type (void) const { return true; }
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71
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72 bool is_float_type (void) const { return true; }
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73
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74 octave_value subsref (const std::string& type,
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75 const std::list<octave_value_list>& idx)
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76 { return make_value ().subsref (type, idx); }
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77
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78 octave_value_list subsref (const std::string& type,
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79 const std::list<octave_value_list>& idx, int)
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80 { return subsref (type, idx); }
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81
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82 octave_value subsasgn (const std::string& type,
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83 const std::list<octave_value_list>& idx,
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84 const octave_value& rhs)
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85 { return make_value ().subsasgn (type, idx, rhs); }
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86
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87 octave_value do_index_op (const octave_value_list& idx,
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88 bool resize_ok = false)
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89 { return make_value ().do_index_op (idx, resize_ok); }
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90
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91 dim_vector dims (void) const { return index.orig_dimensions (); }
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92
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93 octave_idx_type numel (void) const { return index.length (0); }
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94
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95 octave_idx_type nnz (void) const { return numel (); }
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96
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97 octave_value reshape (const dim_vector& new_dims) const;
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98
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99 octave_value permute (const Array<int>& vec, bool inv = false) const;
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100
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101 octave_value resize (const dim_vector& dv, bool fill = false) const
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102 { return make_value ().resize (dv, fill); }
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103
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104 octave_value all (int dim = 0) const { return make_value ().all (dim); }
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105 octave_value any (int dim = 0) const { return make_value ().any (dim); }
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106
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107 MatrixType matrix_type (void) const { return make_value ().matrix_type (); }
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108 MatrixType matrix_type (const MatrixType& _typ) const
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109 { return make_value ().matrix_type (_typ); }
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110
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111 octave_value sort (octave_idx_type dim = 0, sortmode mode = ASCENDING) const;
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112
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113 octave_value sort (Array<octave_idx_type> &sidx, octave_idx_type dim = 0,
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114 sortmode mode = ASCENDING) const;
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115
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116 sortmode is_sorted (sortmode mode = UNSORTED) const;
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117
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118 Array<octave_idx_type> sort_rows_idx (sortmode mode = ASCENDING) const;
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119
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120 sortmode is_sorted_rows (sortmode mode = UNSORTED) const;
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121
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122 bool is_matrix_type (void) const { return true; }
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123
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124 bool is_numeric_type (void) const { return true; }
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125
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126 bool is_defined (void) const { return true; }
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127
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128 bool is_constant (void) const { return true; }
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129
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130 bool is_true (void) const
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131 { return make_value ().is_true (); }
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132
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133 bool print_as_scalar (void) const
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134 { return make_value ().print_as_scalar (); }
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135
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136 void print (std::ostream& os, bool pr_as_read_syntax = false) const
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137 { make_value ().print (os, pr_as_read_syntax); }
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138
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139 void print_info (std::ostream& os, const std::string& prefix) const
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140 { make_value ().print_info (os, prefix); }
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141
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142 #define FORWARD_VALUE_QUERY(TYPE,NAME) \
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143 TYPE \
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144 NAME (void) const { return make_value ().NAME (); }
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145
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146 FORWARD_VALUE_QUERY (int8NDArray, int8_array_value)
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147 FORWARD_VALUE_QUERY (int16NDArray, int16_array_value)
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148 FORWARD_VALUE_QUERY (int32NDArray, int32_array_value)
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149 FORWARD_VALUE_QUERY (int64NDArray, int64_array_value)
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150 FORWARD_VALUE_QUERY (uint8NDArray, uint8_array_value)
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151 FORWARD_VALUE_QUERY (uint16NDArray, uint16_array_value)
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152 FORWARD_VALUE_QUERY (uint32NDArray, uint32_array_value)
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153 FORWARD_VALUE_QUERY (uint64NDArray, uint64_array_value)
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154
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155 #define FORWARD_VALUE_QUERY1(TYPE,NAME) \
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156 TYPE \
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157 NAME (bool flag = false) const { return make_value ().NAME (flag); }
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158
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159 FORWARD_VALUE_QUERY1 (double, double_value)
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160
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161 FORWARD_VALUE_QUERY1 (float, float_value)
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162
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163 FORWARD_VALUE_QUERY1 (double, scalar_value)
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164
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165 FORWARD_VALUE_QUERY1 (Matrix, matrix_value)
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166
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167 FORWARD_VALUE_QUERY1 (FloatMatrix, float_matrix_value)
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168
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169 FORWARD_VALUE_QUERY1 (Complex, complex_value)
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170
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171 FORWARD_VALUE_QUERY1 (FloatComplex, float_complex_value)
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172
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173 FORWARD_VALUE_QUERY1 (ComplexMatrix, complex_matrix_value)
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174
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175 FORWARD_VALUE_QUERY1 (FloatComplexMatrix, float_complex_matrix_value)
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176
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177 FORWARD_VALUE_QUERY1 (ComplexNDArray, complex_array_value)
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178
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179 FORWARD_VALUE_QUERY1 (FloatComplexNDArray, float_complex_array_value)
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180
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181 FORWARD_VALUE_QUERY1 (boolNDArray, bool_array_value)
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182
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183 FORWARD_VALUE_QUERY1 (charNDArray, char_array_value)
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184
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185 FORWARD_VALUE_QUERY1 (NDArray, array_value)
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186
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187 FORWARD_VALUE_QUERY1 (FloatNDArray, float_array_value)
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188
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189 FORWARD_VALUE_QUERY1 (SparseMatrix, sparse_matrix_value)
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190
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191 FORWARD_VALUE_QUERY1 (SparseComplexMatrix, sparse_complex_matrix_value)
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192
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193 octave_value diag (octave_idx_type k = 0) const
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194 { return make_value ().diag (k); }
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195
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196 octave_value convert_to_str_internal (bool pad, bool force, char type) const
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197 { return make_value ().convert_to_str_internal (pad, force, type); }
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198
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199 void print_raw (std::ostream& os, bool pr_as_read_syntax = false) const
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200 { return make_value ().print_raw (os, pr_as_read_syntax); }
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201
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202 bool save_ascii (std::ostream& os);
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203
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204 bool load_ascii (std::istream& is);
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205
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206 bool save_binary (std::ostream& os, bool& save_as_floats);
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207
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208 bool load_binary (std::istream& is, bool swap,
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209 oct_mach_info::float_format fmt);
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210
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211 // HDF5 functions not defined.
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212
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213 int write (octave_stream& os, int block_size,
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214 oct_data_conv::data_type output_type, int skip,
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215 oct_mach_info::float_format flt_fmt) const
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216 { return make_value ().write (os, block_size, output_type, skip, flt_fmt); }
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217
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218 // Unsafe. This function exists to support the MEX interface.
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219 // You should not use it anywhere else.
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220 void *mex_get_data (void) const
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221 { return make_value ().mex_get_data (); }
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222
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223 mxArray *as_mxArray (void) const
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224 { return make_value ().as_mxArray (); }
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225
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226 octave_value map (unary_mapper_t umap) const
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227 { return make_value ().map (umap); }
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228
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229 private:
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230 const octave_value& make_value (void) const
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231 {
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232 if (value.is_undefined ())
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233 value = octave_value (index, false);
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234
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235 return value;
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236 }
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237
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238 octave_value& make_value (void)
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239 {
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240 if (value.is_undefined ())
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241 value = octave_value (index, false);
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242
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243 return value;
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244 }
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245
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246 idx_vector index;
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247 mutable octave_value value;
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248
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249 DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA
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250 };
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251
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252 #endif
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253