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annotate libinterp/octave-value/ov-flt-complex.h @ 18191:f80d258a2c7d stable

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get_first_help_sentence.m: avoid out-of-bound error (bug #41053) * get_first_help_sentence.m: avoid out-of-bound error (bug #41053)
author Philip Nienhuis <prnienhuis@users.sf.net>
date Thu, 02 Jan 2014 11:54:51 +0100
parents ebb3ef964372
children 76478d2da117
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1 /*
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2
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3 Copyright (C) 1996-2013 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
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23 #if !defined (octave_ov_flt_complex_h)
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24 #define octave_ov_flt_complex_h 1
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25
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26 #include <cstdlib>
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27
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28 #include <iosfwd>
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29 #include <string>
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30
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31 #include "lo-ieee.h"
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32 #include "mx-base.h"
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33 #include "oct-alloc.h"
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34 #include "str-vec.h"
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35
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36 #include "gripes.h"
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37 #include "error.h"
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38 #include "ov-base.h"
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39 #include "ov-flt-cx-mat.h"
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40 #include "ov-base-scalar.h"
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41 #include "ov-typeinfo.h"
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42
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43 class octave_value_list;
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44
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45 class tree_walker;
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46
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47 // Complex scalar values.
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48
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49 class
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50 OCTINTERP_API
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51 octave_float_complex : public octave_base_scalar<FloatComplex>
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52 {
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53 public:
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54
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55 octave_float_complex (void)
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56 : octave_base_scalar<FloatComplex> () { }
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57
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58 octave_float_complex (const FloatComplex& c)
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59 : octave_base_scalar<FloatComplex> (c) { }
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60
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61 octave_float_complex (const octave_float_complex& c)
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62 : octave_base_scalar<FloatComplex> (c) { }
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63
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64 ~octave_float_complex (void) { }
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65
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66 octave_base_value *clone (void) const
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67 { return new octave_float_complex (*this); }
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68
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69 // We return an octave_float_complex_matrix object here instead of an
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70 // octave_float_complex object so that in expressions like A(2,2,2) = 2
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71 // (for A previously undefined), A will be empty instead of a 1x1
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72 // object.
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73 octave_base_value *empty_clone (void) const
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74 { return new octave_float_complex_matrix (); }
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75
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76 octave_base_value *try_narrowing_conversion (void);
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77
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78 octave_value do_index_op (const octave_value_list& idx,
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79 bool resize_ok = false);
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80
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81 octave_value any (int = 0) const
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82 {
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83 return (scalar != FloatComplex (0, 0)
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84 && ! (lo_ieee_isnan (std::real (scalar))
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85 || lo_ieee_isnan (std::imag (scalar))));
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86 }
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87
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88 builtin_type_t builtin_type (void) const { return btyp_float_complex; }
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89
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90 bool is_complex_scalar (void) const { return true; }
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91
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92 bool is_complex_type (void) const { return true; }
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93
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94 bool is_single_type (void) const { return true; }
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95
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96 bool is_float_type (void) const { return true; }
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97
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98 double double_value (bool = false) const;
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99
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100 float float_value (bool = false) const;
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101
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102 double scalar_value (bool frc_str_conv = false) const
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103 { return double_value (frc_str_conv); }
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104
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105 float float_scalar_value (bool frc_str_conv = false) const
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106 { return float_value (frc_str_conv); }
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107
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108 Matrix matrix_value (bool = false) const;
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109
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110 FloatMatrix float_matrix_value (bool = false) const;
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111
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112 NDArray array_value (bool = false) const;
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113
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114 FloatNDArray float_array_value (bool = false) const;
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115
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116 SparseMatrix sparse_matrix_value (bool = false) const
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117 { return SparseMatrix (matrix_value ()); }
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118
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119 SparseComplexMatrix sparse_complex_matrix_value (bool = false) const
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120 { return SparseComplexMatrix (complex_matrix_value ()); }
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121
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122 octave_value resize (const dim_vector& dv, bool fill = false) const;
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123
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124 Complex complex_value (bool = false) const;
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125
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126 FloatComplex float_complex_value (bool = false) const;
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127
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128 ComplexMatrix complex_matrix_value (bool = false) const;
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129
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130 FloatComplexMatrix float_complex_matrix_value (bool = false) const;
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131
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132 ComplexNDArray complex_array_value (bool = false) const;
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133
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134 FloatComplexNDArray float_complex_array_value (bool = false) const;
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135
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136 bool bool_value (bool warn = false) const
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137 {
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138 if (xisnan (scalar))
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139 gripe_nan_to_logical_conversion ();
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140 else if (warn && scalar != 0.0f && scalar != 1.0f)
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141 gripe_logical_conversion ();
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142
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143 return scalar != 0.0f;
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144 }
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145
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146 boolNDArray bool_array_value (bool warn = false) const
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147 {
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148 if (xisnan (scalar))
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149 gripe_nan_to_logical_conversion ();
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150 else if (warn && scalar != 0.0f && scalar != 1.0f)
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151 gripe_logical_conversion ();
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152
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153 return boolNDArray (dim_vector (1, 1), scalar != 1.0f);
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154 }
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155
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156 octave_value diag (octave_idx_type m, octave_idx_type n) const;
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157
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158 void increment (void) { scalar += 1.0; }
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159
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160 void decrement (void) { scalar -= 1.0; }
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161
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162 bool save_ascii (std::ostream& os);
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163
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164 bool load_ascii (std::istream& is);
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165
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166 bool save_binary (std::ostream& os, bool& save_as_floats);
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167
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168 bool load_binary (std::istream& is, bool swap,
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169 oct_mach_info::float_format fmt);
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170
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171 #if defined (HAVE_HDF5)
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172 bool save_hdf5 (hid_t loc_id, const char *name, bool save_as_floats);
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173
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174 bool load_hdf5 (hid_t loc_id, const char *name);
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175 #endif
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176
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177 int write (octave_stream& os, int block_size,
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178 oct_data_conv::data_type output_type, int skip,
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179 oct_mach_info::float_format flt_fmt) const
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180 {
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181 // Yes, for compatibility, we drop the imaginary part here.
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182 return os.write (array_value (true), block_size, output_type,
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183 skip, flt_fmt);
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184 }
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185
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186 mxArray *as_mxArray (void) const;
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187
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188 octave_value map (unary_mapper_t umap) const;
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189
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190 private:
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191
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192 DECLARE_OCTAVE_ALLOCATOR
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193
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194 DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA
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195 };
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196
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197 typedef octave_float_complex octave_float_complex_scalar;
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198
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199 #endif