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annotate src/ov-float.h @ 10544:9961fc022d9d

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fix assignment to non-existing variables and octave_value::assign
author Jaroslav Hajek <highegg@gmail.com>
date Fri, 23 Apr 2010 11:23:43 +0200
parents f3b65e1ae355
children 654fbde5dceb
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1 /*
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2
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3 Copyright (C) 1996, 1997, 1998, 2000, 2002, 2003, 2004, 2005, 2006,
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4 2007, 2008, 2009 John W. Eaton
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5
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6 This file is part of Octave.
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7
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8 Octave is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 3 of the License, or (at your
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11 option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #if !defined (octave_float_h)
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25 #define octave_float_h 1
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26
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27 #include <cstdlib>
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28
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29 #include <iosfwd>
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30 #include <string>
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31
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32 #include "lo-ieee.h"
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33 #include "lo-mappers.h"
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34 #include "lo-utils.h"
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35 #include "mx-base.h"
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36 #include "oct-alloc.h"
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37 #include "str-vec.h"
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38
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39 #include "gripes.h"
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40 #include "ov-base.h"
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41 #include "ov-re-mat.h"
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42 #include "ov-flt-re-mat.h"
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43 #include "ov-base-scalar.h"
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44 #include "ov-typeinfo.h"
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45
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46 class Octave_map;
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47 class octave_value_list;
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48
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49 class tree_walker;
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50
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51 // Real scalar values.
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52
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53 class
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54 OCTINTERP_API
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55 octave_float_scalar : public octave_base_scalar<float>
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56 {
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57 public:
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58
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59 octave_float_scalar (void)
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60 : octave_base_scalar<float> (0.0) { }
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61
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62 octave_float_scalar (float d)
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63 : octave_base_scalar<float> (d) { }
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64
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65 octave_float_scalar (const octave_float_scalar& s)
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66 : octave_base_scalar<float> (s) { }
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67
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68 ~octave_float_scalar (void) { }
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69
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70 octave_base_value *clone (void) const { return new octave_float_scalar (*this); }
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71
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72 // We return an octave_matrix here instead of an octave_float_scalar so
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73 // that in expressions like A(2,2,2) = 2 (for A previously
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74 // undefined), A will be empty instead of a 1x1 object.
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75 octave_base_value *empty_clone (void) const { return new octave_float_matrix (); }
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76
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77 octave_value do_index_op (const octave_value_list& idx,
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78 bool resize_ok = false);
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79
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80 idx_vector index_vector (void) const { return idx_vector (scalar); }
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81
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82 octave_value any (int = 0) const
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83 { return (scalar != 0 && ! lo_ieee_isnan (scalar)); }
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84
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85 builtin_type_t builtin_type (void) const { return btyp_float; }
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86
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87 bool is_real_scalar (void) const { return true; }
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88
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89 bool is_real_type (void) const { return true; }
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90
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91 bool is_single_type (void) const { return true; }
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92
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93 bool is_float_type (void) const { return true; }
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94
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95 int8NDArray
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96 int8_array_value (void) const
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97 { return int8NDArray (dim_vector (1, 1), scalar); }
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98
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99 int16NDArray
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100 int16_array_value (void) const
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101 { return int16NDArray (dim_vector (1, 1), scalar); }
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102
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103 int32NDArray
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104 int32_array_value (void) const
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105 { return int32NDArray (dim_vector (1, 1), scalar); }
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106
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107 int64NDArray
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108 int64_array_value (void) const
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109 { return int64NDArray (dim_vector (1, 1), scalar); }
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110
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111 uint8NDArray
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112 uint8_array_value (void) const
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113 { return uint8NDArray (dim_vector (1, 1), scalar); }
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114
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115 uint16NDArray
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116 uint16_array_value (void) const
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117 { return uint16NDArray (dim_vector (1, 1), scalar); }
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118
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119 uint32NDArray
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120 uint32_array_value (void) const
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121 { return uint32NDArray (dim_vector (1, 1), scalar); }
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122
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123 uint64NDArray
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124 uint64_array_value (void) const
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125 { return uint64NDArray (dim_vector (1, 1), scalar); }
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126
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127 #define DEFINE_INT_SCALAR_VALUE(TYPE) \
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128 octave_ ## TYPE \
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129 TYPE ## _scalar_value (void) const \
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130 { return octave_ ## TYPE (scalar); }
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131
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132 DEFINE_INT_SCALAR_VALUE (int8)
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133 DEFINE_INT_SCALAR_VALUE (int16)
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134 DEFINE_INT_SCALAR_VALUE (int32)
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135 DEFINE_INT_SCALAR_VALUE (int64)
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136 DEFINE_INT_SCALAR_VALUE (uint8)
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137 DEFINE_INT_SCALAR_VALUE (uint16)
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138 DEFINE_INT_SCALAR_VALUE (uint32)
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139 DEFINE_INT_SCALAR_VALUE (uint64)
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140
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141 #undef DEFINE_INT_SCALAR_VALUE
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142
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143 double double_value (bool = false) const { return static_cast<double> (scalar); }
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144
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145 float float_value (bool = false) const { return scalar; }
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146
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147 double scalar_value (bool = false) const { return static_cast<double> (scalar); }
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148
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149 float float_scalar_value (bool = false) const { return scalar; }
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150
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151 Matrix matrix_value (bool = false) const
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152 { return Matrix (1, 1, scalar); }
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153
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154 FloatMatrix float_matrix_value (bool = false) const
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155 { return FloatMatrix (1, 1, scalar); }
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156
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157 NDArray array_value (bool = false) const
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158 { return NDArray (dim_vector (1, 1), scalar); }
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159
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160 FloatNDArray float_array_value (bool = false) const
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161 { return FloatNDArray (dim_vector (1, 1), scalar); }
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162
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163 SparseMatrix sparse_matrix_value (bool = false) const
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164 { return SparseMatrix (Matrix (1, 1, scalar)); }
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165
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166 // FIXME Need SparseComplexMatrix (Matrix) constructor!!!
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167 SparseComplexMatrix sparse_complex_matrix_value (bool = false) const
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168 { return SparseComplexMatrix (sparse_matrix_value ()); }
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169
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170 octave_value resize (const dim_vector& dv, bool fill = false) const;
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171
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172 Complex complex_value (bool = false) const { return scalar; }
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173
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174 FloatComplex float_complex_value (bool = false) const { return scalar; }
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175
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176 ComplexMatrix complex_matrix_value (bool = false) const
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177 { return ComplexMatrix (1, 1, Complex (scalar)); }
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178
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179 FloatComplexMatrix float_complex_matrix_value (bool = false) const
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180 { return FloatComplexMatrix (1, 1, FloatComplex (scalar)); }
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181
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182 ComplexNDArray complex_array_value (bool = false) const
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183 { return ComplexNDArray (dim_vector (1, 1), Complex (scalar)); }
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184
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185 FloatComplexNDArray float_complex_array_value (bool = false) const
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186 { return FloatComplexNDArray (dim_vector (1, 1), FloatComplex (scalar)); }
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187
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188 charNDArray
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189 char_array_value (bool = false) const
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190 {
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191 charNDArray retval (dim_vector (1, 1));
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192 retval(0) = static_cast<char> (scalar);
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193 return retval;
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194 }
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195
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196 bool bool_value (bool warn = false) const
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197 {
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198 if (xisnan (scalar))
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199 error ("invalid conversion from NaN to logical");
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200 else if (warn && scalar != 0 && scalar != 1)
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201 gripe_logical_conversion ();
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202
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203 return scalar;
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204 }
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205
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206 boolNDArray bool_array_value (bool warn = false) const
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207 {
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208 if (xisnan (scalar))
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209 error ("invalid conversion from NaN to logical");
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210 else if (warn && scalar != 0 && scalar != 1)
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211 gripe_logical_conversion ();
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212
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213 return boolNDArray (dim_vector (1, 1), scalar);
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214 }
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215
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216 octave_value convert_to_str_internal (bool pad, bool force, char type) const;
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217
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218 void increment (void) { ++scalar; }
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219
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220 void decrement (void) { --scalar; }
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221
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222 bool save_ascii (std::ostream& os);
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223
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224 bool load_ascii (std::istream& is);
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225
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226 bool save_binary (std::ostream& os, bool& save_as_floats);
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227
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228 bool load_binary (std::istream& is, bool swap,
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229 oct_mach_info::float_format fmt);
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230
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231 #if defined (HAVE_HDF5)
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232 bool save_hdf5 (hid_t loc_id, const char *name, bool save_as_floats);
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233
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234 bool load_hdf5 (hid_t loc_id, const char *name);
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235 #endif
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236
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237 int write (octave_stream& os, int block_size,
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238 oct_data_conv::data_type output_type, int skip,
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239 oct_mach_info::float_format flt_fmt) const
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240 {
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241 return os.write (array_value (), block_size, output_type,
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242 skip, flt_fmt);
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243 }
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244
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245 mxArray *as_mxArray (void) const;
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246
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247 octave_value map (unary_mapper_t umap) const;
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248
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249 private:
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250
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251 DECLARE_OCTAVE_ALLOCATOR
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252
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253 DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA
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254 };
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255
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256 #endif