Mercurial > octave
annotate libinterp/corefcn/typecast.cc @ 21660:53728df3e4c9
maint: for clarity, call ndims() rather than length() on dimension vectors.
* ov-re-sparse.cc, QtHandlesUtils.cc, __lin_interpn__.cc, bsxfun.cc,
cellfun.cc, data.cc, dot.cc, ellipj.cc, fft.cc, fft2.cc, fftn.cc, filter.cc,
gl-render.cc, graphics.cc, mex.cc, oct-map.h, sub2ind.cc, symtab.cc, tril.cc,
typecast.cc, utils.cc, variables.cc, ov-base-diag.cc, ov-base-int.cc,
ov-base.cc, ov-base.h, ov-bool-mat.cc, ov-bool-sparse.cc, ov-cell.cc,
ov-class.cc, ov-cx-mat.cc, ov-cx-sparse.cc, ov-flt-cx-mat.cc, ov-flt-re-mat.cc,
ov-intx.h, ov-java.cc, ov-lazy-idx.cc, ov-re-mat.cc, ov-str-mat.cc,
ov-struct.cc, ov.cc, pt-arg-list.cc, pt-mat.cc, Array-util.cc, Array.cc,
Array.h, CNDArray.cc, CSparse.cc, Sparse.cc, Sparse.h, dNDArray.cc, dSparse.cc,
dim-vector.cc, dim-vector.h, fCNDArray.cc, fNDArray.cc, idx-vector.cc,
bsxfun.h, oct-fftw.cc, mx-inlines.cc, lo-array-errwarn.cc, lo-array-gripes.cc:
For clarity, call ndims() rather than length() on dimension vectors.
author | Rik <rik@octave.org> |
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date | Mon, 02 May 2016 08:53:18 -0700 |
parents | 64efef931bd0 |
children | aba2e6293dd8 |
rev | line source |
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6869 | 1 /* |
2 | |
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3 Copyright (C) 2007-2015 David Bateman |
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4 Copyright (C) 2009 VZLU Prague |
6869 | 5 |
6 This file is part of Octave. | |
7 | |
8 Octave is free software; you can redistribute it and/or modify it | |
9 under the terms of the GNU General Public License as published by the | |
7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
11 option) any later version. | |
6869 | 12 |
13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 for more details. | |
17 | |
18 You should have received a copy of the GNU General Public License | |
7016 | 19 along with Octave; see the file COPYING. If not, see |
20 <http://www.gnu.org/licenses/>. | |
6869 | 21 |
22 */ | |
23 | |
24 #ifdef HAVE_CONFIG_H | |
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25 # include "config.h" |
6869 | 26 #endif |
27 | |
17396 | 28 #include <limits> |
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29 |
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30 #include "mx-base.h" |
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31 |
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32 #include "defun.h" |
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33 #include "error.h" |
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34 #include "errwarn.h" |
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35 #include "ovl.h" |
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36 #include "unwind-prot.h" |
6869 | 37 |
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38 static dim_vector |
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39 get_vec_dims (const dim_vector& old_dims, octave_idx_type n) |
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40 { |
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41 if (old_dims.ndims () == 2 && old_dims(0) == 1) |
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42 return dim_vector (1, n); |
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43 else if (old_dims.ndims () == 2 && old_dims(0) == 0 && old_dims(1) == 0) |
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44 return dim_vector (); |
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45 else |
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46 return dim_vector (n, 1); |
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47 } |
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49 template <typename ArrayType> |
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50 static void |
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51 get_data_and_bytesize (const ArrayType& array, |
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52 const void *& data, |
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53 octave_idx_type& byte_size, |
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54 dim_vector& old_dims, |
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55 unwind_protect& frame) |
6869 | 56 { |
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57 // The array given may be a temporary, constructed from a scalar or sparse |
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58 // array. This will ensure the data will be deallocated after we exit. |
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59 frame.add_delete (new ArrayType (array)); |
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60 |
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61 data = reinterpret_cast<const void *> (array.data ()); |
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62 byte_size = array.byte_size (); |
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63 |
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64 old_dims = array.dims (); |
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65 } |
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67 template <typename ArrayType> |
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68 static ArrayType |
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69 reinterpret_copy (const void *data, octave_idx_type byte_size, |
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70 const dim_vector& old_dims) |
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71 { |
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72 typedef typename ArrayType::element_type T; |
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73 octave_idx_type n = byte_size / sizeof (T); |
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74 |
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75 if (n * static_cast<int> (sizeof (T)) != byte_size) |
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76 error ("typecast: incorrect number of input values to make output value"); |
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77 |
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78 ArrayType retval (get_vec_dims (old_dims, n)); |
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79 T *dest = retval.fortran_vec (); |
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80 std::memcpy (dest, data, n * sizeof (T)); |
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81 |
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82 return retval; |
6869 | 83 } |
84 | |
85 | |
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86 DEFUN (typecast, args, , |
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87 "-*- texinfo -*-\n\ |
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88 @deftypefn {} {@var{y} =} typecast (@var{x}, \"@var{class}\")\n\ |
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89 Return a new array @var{y} resulting from interpreting the data of @var{x}\n\ |
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90 in memory as data of the numeric class @var{class}.\n\ |
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91 \n\ |
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92 Both the class of @var{x} and @var{class} must be one of the built-in\n\ |
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93 numeric classes:\n\ |
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94 \n\ |
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95 @example\n\ |
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96 @group\n\ |
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97 \"logical\"\n\ |
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98 \"char\"\n\ |
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99 \"int8\"\n\ |
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100 \"int16\"\n\ |
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101 \"int32\"\n\ |
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102 \"int64\"\n\ |
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103 \"uint8\"\n\ |
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104 \"uint16\"\n\ |
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105 \"uint32\"\n\ |
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106 \"uint64\"\n\ |
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107 \"double\"\n\ |
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108 \"single\"\n\ |
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109 \"double complex\"\n\ |
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110 \"single complex\"\n\ |
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111 @end group\n\ |
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112 @end example\n\ |
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113 \n\ |
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114 @noindent\n\ |
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115 the last two are only used with @var{class}; they indicate that a\n\ |
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116 complex-valued result is requested. Complex arrays are stored in memory as\n\ |
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117 consecutive pairs of real numbers. The sizes of integer types are given by\n\ |
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118 their bit counts. Both logical and char are typically one byte wide;\n\ |
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119 however, this is not guaranteed by C++. If your system is IEEE conformant,\n\ |
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120 single and double will be 4 bytes and 8 bytes wide, respectively.\n\ |
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121 @qcode{\"logical\"} is not allowed for @var{class}.\n\ |
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122 \n\ |
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123 If the input is a row vector, the return value is a row vector, otherwise it\n\ |
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124 is a column vector.\n\ |
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125 \n\ |
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126 If the bit length of @var{x} is not divisible by that of @var{class}, an\n\ |
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127 error occurs.\n\ |
6869 | 128 \n\ |
129 An example of the use of typecast on a little-endian machine is\n\ | |
130 \n\ | |
131 @example\n\ | |
132 @group\n\ | |
133 @var{x} = uint16 ([1, 65535]);\n\ | |
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134 typecast (@var{x}, \"uint8\")\n\ |
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135 @result{} [ 1, 0, 255, 255]\n\ |
6869 | 136 @end group\n\ |
137 @end example\n\ | |
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138 @seealso{cast, bitpack, bitunpack, swapbytes}\n\ |
6869 | 139 @end deftypefn") |
140 { | |
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141 if (args.length () != 2) |
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142 print_usage (); |
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143 |
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144 octave_value retval; |
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145 |
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146 unwind_protect frame; |
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147 |
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148 const void *data = 0; |
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149 octave_idx_type byte_size = 0; |
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150 dim_vector old_dims; |
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151 |
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152 octave_value array = args(0); |
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153 |
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154 if (array.is_bool_type ()) |
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155 get_data_and_bytesize (array.bool_array_value (), data, byte_size, |
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156 old_dims, frame); |
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157 else if (array.is_string ()) |
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158 get_data_and_bytesize (array.char_array_value (), data, byte_size, |
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159 old_dims, frame); |
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160 else if (array.is_integer_type ()) |
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161 { |
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162 if (array.is_int8_type ()) |
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163 get_data_and_bytesize (array.int8_array_value (), data, byte_size, |
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164 old_dims, frame); |
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165 else if (array.is_int16_type ()) |
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166 get_data_and_bytesize (array.int16_array_value (), data, byte_size, |
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167 old_dims, frame); |
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168 else if (array.is_int32_type ()) |
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169 get_data_and_bytesize (array.int32_array_value (), data, byte_size, |
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170 old_dims, frame); |
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171 else if (array.is_int64_type ()) |
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172 get_data_and_bytesize (array.int64_array_value (), data, byte_size, |
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173 old_dims, frame); |
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174 else if (array.is_uint8_type ()) |
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175 get_data_and_bytesize (array.uint8_array_value (), data, byte_size, |
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176 old_dims, frame); |
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177 else if (array.is_uint16_type ()) |
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178 get_data_and_bytesize (array.uint16_array_value (), data, byte_size, |
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179 old_dims, frame); |
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180 else if (array.is_uint32_type ()) |
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181 get_data_and_bytesize (array.uint32_array_value (), data, byte_size, |
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182 old_dims, frame); |
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183 else if (array.is_uint64_type ()) |
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184 get_data_and_bytesize (array.uint64_array_value (), data, byte_size, |
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185 old_dims, frame); |
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186 else |
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187 assert (0); |
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188 } |
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189 else if (array.is_complex_type ()) |
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190 { |
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191 if (array.is_single_type ()) |
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192 get_data_and_bytesize (array.float_complex_array_value (), data, |
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193 byte_size, old_dims, frame); |
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194 else |
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195 get_data_and_bytesize (array.complex_array_value (), data, |
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196 byte_size, old_dims, frame); |
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197 } |
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198 else if (array.is_real_type ()) |
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199 { |
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200 if (array.is_single_type ()) |
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201 get_data_and_bytesize (array.float_array_value (), data, byte_size, |
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202 old_dims, frame); |
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203 else |
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204 get_data_and_bytesize (array.array_value (), data, byte_size, |
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205 old_dims, frame); } |
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206 else |
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207 error ("typecast: invalid input class: %s", |
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208 array.class_name ().c_str ()); |
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209 |
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210 std::string numclass = args(1).string_value (); |
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211 |
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212 if (numclass.size () == 0) |
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213 ; |
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214 else if (numclass == "char") |
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215 retval = octave_value (reinterpret_copy<charNDArray> |
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216 (data, byte_size, old_dims), array.is_dq_string () ? '"' |
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217 : '\''); |
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218 else if (numclass[0] == 'i') |
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219 { |
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220 if (numclass == "int8") |
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221 retval = reinterpret_copy<int8NDArray> (data, byte_size, old_dims); |
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222 else if (numclass == "int16") |
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223 retval = reinterpret_copy<int16NDArray> (data, byte_size, old_dims); |
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224 else if (numclass == "int32") |
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225 retval = reinterpret_copy<int32NDArray> (data, byte_size, old_dims); |
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226 else if (numclass == "int64") |
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227 retval = reinterpret_copy<int64NDArray> (data, byte_size, old_dims); |
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228 } |
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229 else if (numclass[0] == 'u') |
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230 { |
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231 if (numclass == "uint8") |
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232 retval = reinterpret_copy<uint8NDArray> (data, byte_size, old_dims); |
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233 else if (numclass == "uint16") |
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234 retval = reinterpret_copy<uint16NDArray> (data, byte_size, |
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235 old_dims); |
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236 else if (numclass == "uint32") |
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237 retval = reinterpret_copy<uint32NDArray> (data, byte_size, |
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238 old_dims); |
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239 else if (numclass == "uint64") |
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240 retval = reinterpret_copy<uint64NDArray> (data, byte_size, |
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241 old_dims); |
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242 } |
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243 else if (numclass == "single") |
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244 retval = reinterpret_copy<FloatNDArray> (data, byte_size, old_dims); |
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245 else if (numclass == "double") |
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246 retval = reinterpret_copy<NDArray> (data, byte_size, old_dims); |
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247 else if (numclass == "single complex") |
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248 retval = reinterpret_copy<FloatComplexNDArray> (data, byte_size, |
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249 old_dims); |
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250 else if (numclass == "double complex") |
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251 retval = reinterpret_copy<ComplexNDArray> (data, byte_size, old_dims); |
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252 |
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253 if (retval.is_undefined ()) |
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254 error ("typecast: cannot convert to %s class", numclass.c_str ()); |
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255 |
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256 return retval; |
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257 } |
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258 |
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259 /* |
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260 %!assert (typecast (int64 (0), "char"), char (zeros (1, 8))) |
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261 %!assert (typecast (int64 (0), "int8"), zeros (1, 8, "int8")) |
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262 %!assert (typecast (int64 (0), "uint8"), zeros (1, 8, "uint8")) |
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263 %!assert (typecast (int64 (0), "int16"), zeros (1, 4, "int16")) |
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264 %!assert (typecast (int64 (0), "uint16"), zeros (1, 4, "uint16")) |
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265 %!assert (typecast (int64 (0), "int32"), zeros (1, 2, "int32")) |
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266 %!assert (typecast (int64 (0), "uint32"), zeros (1, 2, "uint32")) |
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267 %!assert (typecast (int64 (0), "int64"), zeros (1, 1, "int64")) |
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268 %!assert (typecast (int64 (0), "uint64"), zeros (1, 1, "uint64")) |
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269 %!assert (typecast (int64 (0), "single"), zeros (1, 2, "single")) |
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270 %!assert (typecast (int64 (0), "double"), 0) |
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271 %!assert (typecast (int64 (0), "single complex"), single (0)) |
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272 %!assert (typecast (int64 ([0 0]), "double complex"), 0) |
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273 |
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274 %!assert (typecast ([], "double"), []) |
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275 %!assert (typecast (0, "double"), 0) |
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276 %!assert (typecast (inf, "double"), inf) |
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277 %!assert (typecast (-inf, "double"), -inf) |
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278 %!assert (typecast (nan, "double"), nan) |
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279 |
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280 %!error typecast () |
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281 %!error typecast (1) |
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282 %!error typecast (1, 2, 3) |
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283 %!error typecast (1, "invalid") |
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284 %!error typecast (int8 (0), "double") |
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285 */ |
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286 |
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287 template <typename ArrayType> |
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288 ArrayType |
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289 do_bitpack (const boolNDArray& bitp) |
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290 { |
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291 typedef typename ArrayType::element_type T; |
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292 octave_idx_type n |
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293 = bitp.numel () / (sizeof (T) * std::numeric_limits<unsigned char>::digits); |
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294 |
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295 if (n * static_cast<int> (sizeof (T)) * std::numeric_limits<unsigned char>::digits != bitp.numel ()) |
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296 error ("bitpack: incorrect number of bits to make up output value"); |
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297 |
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298 ArrayType retval (get_vec_dims (bitp.dims (), n)); |
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299 |
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300 const bool *bits = bitp.fortran_vec (); |
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301 char *packed = reinterpret_cast<char *> (retval.fortran_vec ()); |
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302 |
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303 octave_idx_type m = n * sizeof (T); |
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304 |
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305 for (octave_idx_type i = 0; i < m; i++) |
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306 { |
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307 char c = bits[0]; |
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308 for (int j = 1; j < std::numeric_limits<unsigned char>::digits; j++) |
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309 c |= bits[j] << j; |
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310 |
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311 packed[i] = c; |
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312 bits += std::numeric_limits<unsigned char>::digits; |
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313 } |
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314 |
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315 return retval; |
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316 } |
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318 DEFUN (bitpack, args, , |
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319 "-*- texinfo -*-\n\ |
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320 @deftypefn {} {@var{y} =} bitpack (@var{x}, @var{class})\n\ |
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321 Return a new array @var{y} resulting from interpreting the logical array\n\ |
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322 @var{x} as raw bit patterns for data of the numeric class @var{class}.\n\ |
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323 \n\ |
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324 @var{class} must be one of the built-in numeric classes:\n\ |
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325 \n\ |
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326 @example\n\ |
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327 @group\n\ |
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328 \"double\"\n\ |
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329 \"single\"\n\ |
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330 \"double complex\"\n\ |
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331 \"single complex\"\n\ |
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332 \"char\"\n\ |
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333 \"int8\"\n\ |
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334 \"int16\"\n\ |
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335 \"int32\"\n\ |
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336 \"int64\"\n\ |
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337 \"uint8\"\n\ |
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338 \"uint16\"\n\ |
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339 \"uint32\"\n\ |
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340 \"uint64\"\n\ |
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341 @end group\n\ |
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342 @end example\n\ |
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343 \n\ |
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345 @var{class}. If it is not, excess bits are discarded. Bits come in\n\ |
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346 increasing order of significance, i.e., @code{x(1)} is bit 0, @code{x(2)} is\n\ |
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347 bit 1, etc.\n\ |
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348 \n\ |
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349 The result is a row vector if @var{x} is a row vector, otherwise it is a\n\ |
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350 column vector.\n\ |
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351 @seealso{bitunpack, typecast}\n\ |
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352 @end deftypefn") |
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353 { |
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354 if (args.length () != 2) |
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355 print_usage (); |
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356 |
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357 if (! args(0).is_bool_type ()) |
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358 error ("bitpack: X must be a logical array"); |
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359 |
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360 octave_value retval; |
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361 |
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362 boolNDArray bitp = args(0).bool_array_value (); |
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363 |
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364 std::string numclass = args(1).string_value (); |
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366 if (numclass.size () == 0) |
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367 ; |
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368 else if (numclass == "char") |
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369 retval = octave_value (do_bitpack<charNDArray> (bitp), '\''); |
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370 else if (numclass[0] == 'i') |
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371 { |
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372 if (numclass == "int8") |
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373 retval = do_bitpack<int8NDArray> (bitp); |
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374 else if (numclass == "int16") |
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375 retval = do_bitpack<int16NDArray> (bitp); |
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376 else if (numclass == "int32") |
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377 retval = do_bitpack<int32NDArray> (bitp); |
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378 else if (numclass == "int64") |
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379 retval = do_bitpack<int64NDArray> (bitp); |
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380 } |
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381 else if (numclass[0] == 'u') |
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382 { |
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383 if (numclass == "uint8") |
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384 retval = do_bitpack<uint8NDArray> (bitp); |
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385 else if (numclass == "uint16") |
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386 retval = do_bitpack<uint16NDArray> (bitp); |
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387 else if (numclass == "uint32") |
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388 retval = do_bitpack<uint32NDArray> (bitp); |
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389 else if (numclass == "uint64") |
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390 retval = do_bitpack<uint64NDArray> (bitp); |
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391 } |
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392 else if (numclass == "single") |
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393 retval = do_bitpack<FloatNDArray> (bitp); |
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394 else if (numclass == "double") |
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395 retval = do_bitpack<NDArray> (bitp); |
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396 else if (numclass == "single complex") |
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397 retval = do_bitpack<FloatComplexNDArray> (bitp); |
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398 else if (numclass == "double complex") |
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399 retval = do_bitpack<ComplexNDArray> (bitp); |
6869 | 400 |
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401 if (retval.is_undefined ()) |
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402 error ("bitpack: cannot pack to %s class", numclass.c_str ()); |
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403 |
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404 return retval; |
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405 } |
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406 |
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407 /* |
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408 %!assert (bitpack (zeros (1, 8, "logical"), "char"), "\0") |
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409 %!assert (bitpack (zeros (1, 8, "logical"), "int8"), int8 (0)) |
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410 %!assert (bitpack (zeros (1, 8, "logical"), "uint8"), uint8 (0)) |
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411 %!assert (bitpack (zeros (1, 16, "logical"), "int16"), int16 (0)) |
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412 %!assert (bitpack (zeros (1, 16, "logical"), "uint16"), uint16 (0)) |
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413 %!assert (bitpack (zeros (1, 32, "logical"), "int32"), int32 (0)) |
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414 %!assert (bitpack (zeros (1, 32, "logical"), "uint32"), uint32 (0)) |
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415 %!assert (bitpack (zeros (1, 64, "logical"), "int64"), int64 (0)) |
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416 %!assert (bitpack (zeros (1, 64, "logical"), "uint64"), uint64 (0)) |
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417 %!assert (bitpack (zeros (1, 32, "logical"), "single"), single (0)) |
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418 %!assert (bitpack (zeros (1, 64, "logical"), "double"), double (0)) |
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419 %!assert (bitpack (zeros (1, 64, "logical"), "single complex"), single (0)) |
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420 %!assert (bitpack (zeros (1, 128, "logical"), "double complex"), double (0)) |
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421 |
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422 %!error bitpack () |
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423 %!error bitpack (1) |
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424 %!error bitpack (1, 2, 3) |
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425 %!error bitpack (1, "invalid") |
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426 %!error bitpack (1, "double") |
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427 %!error bitpack (false, "invalid") |
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428 %!error bitpack (false, "double") |
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429 */ |
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430 |
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431 template <typename ArrayType> |
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432 boolNDArray |
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433 do_bitunpack (const ArrayType& array) |
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434 { |
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435 typedef typename ArrayType::element_type T; |
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436 octave_idx_type n = array.numel () * sizeof (T) |
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437 * std::numeric_limits<unsigned char>::digits; |
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438 |
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439 boolNDArray retval (get_vec_dims (array.dims (), n)); |
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440 |
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441 const char *packed = reinterpret_cast<const char *> (array.fortran_vec ()); |
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442 bool *bits = retval.fortran_vec (); |
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443 |
17396 | 444 octave_idx_type m = n / std::numeric_limits<unsigned char>::digits; |
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445 |
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446 for (octave_idx_type i = 0; i < m; i++) |
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447 { |
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448 char c = packed[i]; |
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449 bits[0] = c & 1; |
17396 | 450 for (int j = 1; j < std::numeric_limits<unsigned char>::digits; j++) |
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451 bits[j] = (c >>= 1) & 1; |
17396 | 452 bits += std::numeric_limits<unsigned char>::digits; |
6869 | 453 } |
454 | |
455 return retval; | |
456 } | |
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457 |
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458 DEFUN (bitunpack, args, , |
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459 "-*- texinfo -*-\n\ |
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460 @deftypefn {} {@var{y} =} bitunpack (@var{x})\n\ |
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461 Return a logical array @var{y} corresponding to the raw bit patterns of\n\ |
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462 @var{x}.\n\ |
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463 \n\ |
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464 @var{x} must belong to one of the built-in numeric classes:\n\ |
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465 \n\ |
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466 @example\n\ |
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467 @group\n\ |
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468 \"double\"\n\ |
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469 \"single\"\n\ |
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470 \"char\"\n\ |
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471 \"int8\"\n\ |
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472 \"int16\"\n\ |
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473 \"int32\"\n\ |
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474 \"int64\"\n\ |
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475 \"uint8\"\n\ |
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476 \"uint16\"\n\ |
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477 \"uint32\"\n\ |
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478 \"uint64\"\n\ |
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479 @end group\n\ |
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480 @end example\n\ |
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481 \n\ |
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482 The result is a row vector if @var{x} is a row vector; otherwise, it is a\n\ |
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483 column vector.\n\ |
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484 @seealso{bitpack, typecast}\n\ |
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485 @end deftypefn") |
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486 { |
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487 if (args.length () != 1) |
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488 print_usage (); |
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489 |
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490 if (! (args(0).is_numeric_type () || args(0).is_string ())) |
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491 error ("bitunpack: argument must be a number or a string"); |
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492 |
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493 octave_value retval; |
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494 |
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495 octave_value array = args(0); |
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496 |
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497 if (array.is_string ()) |
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498 retval = do_bitunpack (array.char_array_value ()); |
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499 else if (array.is_integer_type ()) |
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500 { |
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501 if (array.is_int8_type ()) |
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502 retval = do_bitunpack (array.int8_array_value ()); |
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503 else if (array.is_int16_type ()) |
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504 retval = do_bitunpack (array.int16_array_value ()); |
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505 else if (array.is_int32_type ()) |
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506 retval = do_bitunpack (array.int32_array_value ()); |
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507 else if (array.is_int64_type ()) |
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508 retval = do_bitunpack (array.int64_array_value ()); |
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509 else if (array.is_uint8_type ()) |
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510 retval = do_bitunpack (array.uint8_array_value ()); |
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511 else if (array.is_uint16_type ()) |
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512 retval = do_bitunpack (array.uint16_array_value ()); |
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513 else if (array.is_uint32_type ()) |
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514 retval = do_bitunpack (array.uint32_array_value ()); |
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515 else if (array.is_uint64_type ()) |
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516 retval = do_bitunpack (array.uint64_array_value ()); |
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517 else |
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518 assert (0); |
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519 } |
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520 else if (array.is_complex_type ()) |
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521 { |
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522 if (array.is_single_type ()) |
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523 retval = do_bitunpack (array.float_complex_array_value ()); |
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524 else |
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525 retval = do_bitunpack (array.complex_array_value ()); |
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526 } |
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527 else if (array.is_real_type ()) |
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528 { |
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529 if (array.is_single_type ()) |
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530 retval = do_bitunpack (array.float_array_value ()); |
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531 else |
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532 retval = do_bitunpack (array.array_value ()); |
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533 } |
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534 else |
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535 error ("bitunpack: invalid input class: %s", |
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536 array.class_name ().c_str ()); |
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537 |
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538 return retval; |
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539 } |
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540 |
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541 /* |
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542 %!assert (bitunpack ("\0"), zeros (1, 8, "logical")) |
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543 %!assert (bitunpack (int8 (0)), zeros (1, 8, "logical")) |
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544 %!assert (bitunpack (uint8 (0)), zeros (1, 8, "logical")) |
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545 %!assert (bitunpack (int16 (0)), zeros (1, 16, "logical")) |
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546 %!assert (bitunpack (uint16 (0)), zeros (1, 16, "logical")) |
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547 %!assert (bitunpack (int32 (0)), zeros (1, 32, "logical")) |
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548 %!assert (bitunpack (uint32 (0)), zeros (1, 32, "logical")) |
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549 %!assert (bitunpack (int64 (0)), zeros (1, 64, "logical")) |
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550 %!assert (bitunpack (uint64 (0)), zeros (1, 64, "logical")) |
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551 %!assert (bitunpack (single (0)), zeros (1, 32, "logical")) |
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552 %!assert (bitunpack (double (0)), zeros (1, 64, "logical")) |
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553 %!assert (bitunpack (complex (single (0))), zeros (1, 64, "logical")) |
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554 %!assert (bitunpack (complex (double (0))), zeros (1, 128, "logical")) |
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555 |
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556 %!error bitunpack () |
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557 %!error bitunpack (1, 2) |
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558 %!error bitunpack ({}) |
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559 */ |
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560 |