annotate liboctave/util/data-conv.h @ 31706:597f3ee61a48 stable

update Octave Project Developers copyright for the new year
author John W. Eaton <jwe@octave.org>
date Fri, 06 Jan 2023 13:11:27 -0500
parents 796f54d4ddbf
children ae4e19c0a2b1 2e484f9f1f18
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1996-2023 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if ! defined (octave_data_conv_h)
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27 #define octave_data_conv_h 1
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28
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29 #include "octave-config.h"
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30
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31 #include "mach-info.h"
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32 #include "oct-inttypes-fwd.h"
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33
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34 class
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35 OCTAVE_API
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36 oct_data_conv
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37 {
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38 public:
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39
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40 enum data_type
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41 {
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42 dt_int8 = 0,
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43 dt_uint8 = 1,
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44 dt_int16 = 2,
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45 dt_uint16 = 3,
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46 dt_int32 = 4,
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47 dt_uint32 = 5,
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48 dt_int64 = 6,
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49 dt_uint64 = 7,
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50 dt_single = 8,
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51 dt_double = 9,
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52 dt_char = 10,
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53 dt_schar = 11,
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54 dt_uchar = 12,
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55 dt_logical = 13,
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56 dt_short = 14,
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57 dt_ushort = 15,
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58 dt_int = 16,
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59 dt_uint = 17,
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60 dt_long = 18,
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61 dt_ulong = 19,
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62 dt_longlong = 20,
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63 dt_ulonglong = 21,
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64 dt_float = 22,
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65 dt_unknown = 23 // Must be last, have largest value!
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66 };
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67
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68 static std::size_t data_type_size (data_type dt);
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69
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70 static data_type string_to_data_type (const std::string& s);
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71
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72 static void string_to_data_type (const std::string& s, int& block_size,
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73 data_type& input_type,
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74 data_type& output_type);
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75
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76 static void string_to_data_type (const std::string& s, int& block_size,
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77 data_type& output_type);
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78
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79 static std::string data_type_as_string (data_type dt);
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80 };
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81
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82 // Add new entries to the end of this enum, otherwise Octave will not
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83 // be able to read binary data files stored in Octave's binary data
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84 // format that were created with previous versions of Octave.
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85
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86 enum save_type
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87 {
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88 LS_U_CHAR = 0,
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89 LS_U_SHORT = 1,
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90 LS_U_INT = 2,
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91 LS_CHAR = 3,
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92 LS_SHORT = 4,
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93 LS_INT = 5,
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94 LS_FLOAT = 6,
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95 LS_DOUBLE = 7,
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96 LS_U_LONG = 8,
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97 LS_LONG = 9
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98 };
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99
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100 extern OCTAVE_API void
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101 do_double_format_conversion (void *data, octave_idx_type len,
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102 octave::mach_info::float_format from_fmt,
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103 octave::mach_info::float_format to_fmt
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104 = octave::mach_info::native_float_format ());
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105
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106 extern OCTAVE_API void
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107 do_float_format_conversion (void *data, octave_idx_type len,
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108 octave::mach_info::float_format from_fmt,
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109 octave::mach_info::float_format to_fmt
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110 = octave::mach_info::native_float_format ());
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111
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112 extern OCTAVE_API void
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113 do_float_format_conversion (void *data, std::size_t sz, octave_idx_type len,
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114 octave::mach_info::float_format from_fmt,
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115 octave::mach_info::float_format to_fmt
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116 = octave::mach_info::native_float_format ());
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117
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118 extern OCTAVE_API void
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119 read_doubles (std::istream& is, double *data, save_type type,
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120 octave_idx_type len, bool swap, octave::mach_info::float_format fmt);
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121
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122 extern OCTAVE_API void
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123 write_doubles (std::ostream& os, const double *data, save_type type,
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124 octave_idx_type len);
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125
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126 extern OCTAVE_API void
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127 read_floats (std::istream& is, float *data, save_type type,
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128 octave_idx_type len, bool swap, octave::mach_info::float_format fmt);
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129
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130 extern OCTAVE_API void
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131 write_floats (std::ostream& os, const float *data, save_type type,
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132 octave_idx_type len);
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133
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134 template <typename T>
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135 inline bool
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136 is_equivalent_type (oct_data_conv::data_type)
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137 {
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138 return false;
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139 }
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140
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141 template <>
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142 inline bool
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143 is_equivalent_type<int8_t> (oct_data_conv::data_type t)
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144 {
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145 return t == oct_data_conv::dt_int8;
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146 }
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147
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148 template <>
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149 inline bool
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150 is_equivalent_type<int16_t> (oct_data_conv::data_type t)
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151 {
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152 return t == oct_data_conv::dt_int16;
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153 }
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154
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155 template <>
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156 inline bool
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157 is_equivalent_type<int32_t> (oct_data_conv::data_type t)
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158 {
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159 return t == oct_data_conv::dt_int32;
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160 }
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161
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162 template <>
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163 inline bool
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164 is_equivalent_type<int64_t> (oct_data_conv::data_type t)
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165 {
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166 return t == oct_data_conv::dt_int64;
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167 }
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168
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169 template <>
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170 inline bool
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171 is_equivalent_type<uint8_t> (oct_data_conv::data_type t)
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172 {
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173 return t == oct_data_conv::dt_uint8;
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174 }
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175
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176 template <>
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177 inline bool
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178 is_equivalent_type<uint16_t> (oct_data_conv::data_type t)
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179 {
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180 return t == oct_data_conv::dt_uint16;
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181 }
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182
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183 template <>
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184 inline bool
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185 is_equivalent_type<uint32_t> (oct_data_conv::data_type t)
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186 {
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187 return t == oct_data_conv::dt_uint32;
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188 }
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189
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190 template <>
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191 inline bool
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192 is_equivalent_type<uint64_t> (oct_data_conv::data_type t)
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193 {
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194 return t == oct_data_conv::dt_uint64;
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195 }
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196
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197 template <>
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198 inline bool
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199 is_equivalent_type<octave_int8> (oct_data_conv::data_type t)
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200 {
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201 return t == oct_data_conv::dt_int8;
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202 }
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203
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204 template <>
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205 inline bool
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206 is_equivalent_type<octave_int16> (oct_data_conv::data_type t)
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207 {
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208 return t == oct_data_conv::dt_int16;
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209 }
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210
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211 template <>
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212 inline bool
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213 is_equivalent_type<octave_int32> (oct_data_conv::data_type t)
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214 {
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215 return t == oct_data_conv::dt_int32;
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216 }
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217
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218 template <>
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219 inline bool
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220 is_equivalent_type<octave_int64> (oct_data_conv::data_type t)
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221 {
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222 return t == oct_data_conv::dt_int64;
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223 }
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224
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225 template <>
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226 inline bool
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227 is_equivalent_type<octave_uint8> (oct_data_conv::data_type t)
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228 {
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229 return t == oct_data_conv::dt_uint8;
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230 }
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231
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232 template <>
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233 inline bool
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234 is_equivalent_type<octave_uint16> (oct_data_conv::data_type t)
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235 {
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236 return t == oct_data_conv::dt_uint16;
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237 }
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238
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239 template <>
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240 inline bool
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241 is_equivalent_type<octave_uint32> (oct_data_conv::data_type t)
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242 {
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243 return t == oct_data_conv::dt_uint32;
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244 }
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245
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246 template <>
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247 inline bool
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248 is_equivalent_type<octave_uint64> (oct_data_conv::data_type t)
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249 {
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250 return t == oct_data_conv::dt_uint64;
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251 }
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252
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253 template <>
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254 inline bool
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255 is_equivalent_type<double> (oct_data_conv::data_type t)
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256 {
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257 return t == oct_data_conv::dt_double;
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258 }
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259
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260 template <>
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261 inline bool
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262 is_equivalent_type<float> (oct_data_conv::data_type t)
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263 {
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264 return t == oct_data_conv::dt_single || t == oct_data_conv::dt_float;
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265 }
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266
1960
285a7f683a4c [project @ 1996-02-16 04:03:01 by jwe]
jwe
parents:
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267 #endif