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>
date Mon, 02 May 2016 08:53:18 -0700
parents 64efef931bd0
children aba2e6293dd8
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1 /*
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2
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3 Copyright (C) 2007-2015 David Bateman
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4 Copyright (C) 2009 VZLU Prague
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5
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
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6 This file is part of Octave.
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7
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
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8 Octave is free software; you can redistribute it and/or modify it
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
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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
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
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11 option) any later version.
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12
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
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13 Octave is distributed in the hope that it will be useful, but WITHOUT
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
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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
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
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24 #ifdef HAVE_CONFIG_H
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25 # include "config.h"
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26 #endif
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27
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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"
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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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48
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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)
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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;
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83 }
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84
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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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Rik <rik@octave.org>
parents: 15545
diff changeset
127 error occurs.\n\
6869
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dbateman
parents:
diff changeset
128 \n\
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
dbateman
parents:
diff changeset
129 An example of the use of typecast on a little-endian machine is\n\
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
dbateman
parents:
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130 \n\
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
dbateman
parents:
diff changeset
131 @example\n\
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
dbateman
parents:
diff changeset
132 @group\n\
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
dbateman
parents:
diff changeset
133 @var{x} = uint16 ([1, 65535]);\n\
14360
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
134 typecast (@var{x}, \"uint8\")\n\
15542
69f45f3ab96a Correct big-endian/little-endian reversal in typecast documentation.
Rik <rik@octave.org>
parents: 14138
diff changeset
135 @result{} [ 1, 0, 255, 255]\n\
6869
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dbateman
parents:
diff changeset
136 @end group\n\
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
dbateman
parents:
diff changeset
137 @end example\n\
19174
6f3e922c5197 doc: Improve docstrings for typecast, bitpack, bitunpack.
Rik <rik@octave.org>
parents: 17787
diff changeset
138 @seealso{cast, bitpack, bitunpack, swapbytes}\n\
6869
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dbateman
parents:
diff changeset
139 @end deftypefn")
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
dbateman
parents:
diff changeset
140 {
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parents: 20555
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141 if (args.length () != 2)
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
142 print_usage ();
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
143
20939
b17fda023ca6 maint: Use new C++ archetype in more files.
Rik <rik@octave.org>
parents: 20921
diff changeset
144 octave_value retval;
b17fda023ca6 maint: Use new C++ archetype in more files.
Rik <rik@octave.org>
parents: 20921
diff changeset
145
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diff changeset
146 unwind_protect frame;
20939
b17fda023ca6 maint: Use new C++ archetype in more files.
Rik <rik@octave.org>
parents: 20921
diff changeset
147
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diff changeset
148 const void *data = 0;
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parents: 20555
diff changeset
149 octave_idx_type byte_size = 0;
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parents: 20555
diff changeset
150 dim_vector old_dims;
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parents: 20555
diff changeset
151
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parents: 20555
diff changeset
152 octave_value array = args(0);
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parents: 9036
diff changeset
153
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parents: 20555
diff changeset
154 if (array.is_bool_type ())
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
155 get_data_and_bytesize (array.bool_array_value (), data, byte_size,
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
156 old_dims, frame);
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
157 else if (array.is_string ())
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parents: 20555
diff changeset
158 get_data_and_bytesize (array.char_array_value (), data, byte_size,
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
159 old_dims, frame);
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parents: 20555
diff changeset
160 else if (array.is_integer_type ())
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
161 {
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
162 if (array.is_int8_type ())
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
163 get_data_and_bytesize (array.int8_array_value (), data, byte_size,
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
164 old_dims, frame);
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
165 else if (array.is_int16_type ())
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parents: 20555
diff changeset
166 get_data_and_bytesize (array.int16_array_value (), data, byte_size,
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
167 old_dims, frame);
20800
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parents: 20555
diff changeset
168 else if (array.is_int32_type ())
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parents: 20555
diff changeset
169 get_data_and_bytesize (array.int32_array_value (), data, byte_size,
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
170 old_dims, frame);
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
171 else if (array.is_int64_type ())
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
172 get_data_and_bytesize (array.int64_array_value (), data, byte_size,
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
173 old_dims, frame);
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
174 else if (array.is_uint8_type ())
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
175 get_data_and_bytesize (array.uint8_array_value (), data, byte_size,
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
176 old_dims, frame);
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
177 else if (array.is_uint16_type ())
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
178 get_data_and_bytesize (array.uint16_array_value (), data, byte_size,
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
179 old_dims, frame);
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
180 else if (array.is_uint32_type ())
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
181 get_data_and_bytesize (array.uint32_array_value (), data, byte_size,
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
182 old_dims, frame);
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
183 else if (array.is_uint64_type ())
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
184 get_data_and_bytesize (array.uint64_array_value (), data, byte_size,
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
185 old_dims, frame);
20800
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
186 else
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
187 assert (0);
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
188 }
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
189 else if (array.is_complex_type ())
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
190 {
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
191 if (array.is_single_type ())
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
192 get_data_and_bytesize (array.float_complex_array_value (), data,
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
193 byte_size, old_dims, frame);
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
194 else
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
195 get_data_and_bytesize (array.complex_array_value (), data,
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
196 byte_size, old_dims, frame);
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
197 }
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
198 else if (array.is_real_type ())
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
199 {
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
200 if (array.is_single_type ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
201 get_data_and_bytesize (array.float_array_value (), data, byte_size,
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
202 old_dims, frame);
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
203 else
20800
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
204 get_data_and_bytesize (array.array_value (), data, byte_size,
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
205 old_dims, frame); }
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
206 else
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
207 error ("typecast: invalid input class: %s",
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
208 array.class_name ().c_str ());
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
209
20800
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
210 std::string numclass = args(1).string_value ();
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
211
20800
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
212 if (numclass.size () == 0)
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
213 ;
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
214 else if (numclass == "char")
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
215 retval = octave_value (reinterpret_copy<charNDArray>
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
216 (data, byte_size, old_dims), array.is_dq_string () ? '"'
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
217 : '\'');
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
218 else if (numclass[0] == 'i')
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
219 {
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
220 if (numclass == "int8")
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
221 retval = reinterpret_copy<int8NDArray> (data, byte_size, old_dims);
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
222 else if (numclass == "int16")
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
223 retval = reinterpret_copy<int16NDArray> (data, byte_size, old_dims);
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
224 else if (numclass == "int32")
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
225 retval = reinterpret_copy<int32NDArray> (data, byte_size, old_dims);
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
226 else if (numclass == "int64")
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
227 retval = reinterpret_copy<int64NDArray> (data, byte_size, old_dims);
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
228 }
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
229 else if (numclass[0] == 'u')
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
230 {
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
231 if (numclass == "uint8")
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
232 retval = reinterpret_copy<uint8NDArray> (data, byte_size, old_dims);
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
233 else if (numclass == "uint16")
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
234 retval = reinterpret_copy<uint16NDArray> (data, byte_size,
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
235 old_dims);
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
236 else if (numclass == "uint32")
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
237 retval = reinterpret_copy<uint32NDArray> (data, byte_size,
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
238 old_dims);
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
239 else if (numclass == "uint64")
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
240 retval = reinterpret_copy<uint64NDArray> (data, byte_size,
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
241 old_dims);
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
242 }
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
243 else if (numclass == "single")
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
244 retval = reinterpret_copy<FloatNDArray> (data, byte_size, old_dims);
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
245 else if (numclass == "double")
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
246 retval = reinterpret_copy<NDArray> (data, byte_size, old_dims);
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
247 else if (numclass == "single complex")
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
248 retval = reinterpret_copy<FloatComplexNDArray> (data, byte_size,
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
249 old_dims);
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
250 else if (numclass == "double complex")
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
251 retval = reinterpret_copy<ComplexNDArray> (data, byte_size, old_dims);
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
252
20800
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
253 if (retval.is_undefined ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
254 error ("typecast: cannot convert to %s class", numclass.c_str ());
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
255
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
256 return retval;
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
257 }
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
258
21389
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
259 /*
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
260 %!assert (typecast (int64 (0), "char"), char (zeros (1, 8)))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
261 %!assert (typecast (int64 (0), "int8"), zeros (1, 8, "int8"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
262 %!assert (typecast (int64 (0), "uint8"), zeros (1, 8, "uint8"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
263 %!assert (typecast (int64 (0), "int16"), zeros (1, 4, "int16"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
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diff changeset
264 %!assert (typecast (int64 (0), "uint16"), zeros (1, 4, "uint16"))
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diff changeset
265 %!assert (typecast (int64 (0), "int32"), zeros (1, 2, "int32"))
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diff changeset
266 %!assert (typecast (int64 (0), "uint32"), zeros (1, 2, "uint32"))
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diff changeset
267 %!assert (typecast (int64 (0), "int64"), zeros (1, 1, "int64"))
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diff changeset
268 %!assert (typecast (int64 (0), "uint64"), zeros (1, 1, "uint64"))
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diff changeset
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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diff changeset
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
20982
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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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diff changeset
305 for (octave_idx_type i = 0; i < m; i++)
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diff changeset
306 {
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307 char c = bits[0];
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diff changeset
308 for (int j = 1; j < std::numeric_limits<unsigned char>::digits; j++)
d27f66b4b8e6 maint: invert if/else/error instances.
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309 c |= bits[j] << j;
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310
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diff changeset
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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diff changeset
314
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315 return retval;
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316 }
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317
15039
e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory
Rik <rik@octave.org>
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diff changeset
318 DEFUN (bitpack, args, ,
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
319 "-*- texinfo -*-\n\
20853
1142cf6abc0d 2015 Code Sprint: remove class of function from docstring for all C++ files.
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parents: 20831
diff changeset
320 @deftypefn {} {@var{y} =} bitpack (@var{x}, @var{class})\n\
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diff changeset
321 Return a new array @var{y} resulting from interpreting the logical array\n\
11553
01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory.
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parents: 11523
diff changeset
322 @var{x} as raw bit patterns for data of the numeric class @var{class}.\n\
19174
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diff changeset
323 \n\
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diff changeset
324 @var{class} must be one of the built-in numeric classes:\n\
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diff changeset
325 \n\
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diff changeset
326 @example\n\
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diff changeset
327 @group\n\
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diff changeset
328 \"double\"\n\
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diff changeset
329 \"single\"\n\
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diff changeset
330 \"double complex\"\n\
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Rik <rik@octave.org>
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diff changeset
331 \"single complex\"\n\
14360
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
332 \"char\"\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
333 \"int8\"\n\
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Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
334 \"int16\"\n\
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Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
335 \"int32\"\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
336 \"int64\"\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
337 \"uint8\"\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
338 \"uint16\"\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
339 \"uint32\"\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
340 \"uint64\"\n\
9758
09da0bd91412 Periodic grammar check of Octave documentation files to ensure common format
Rik <rdrider0-list@yahoo.com>
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diff changeset
341 @end group\n\
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diff changeset
342 @end example\n\
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Jaroslav Hajek <highegg@gmail.com>
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diff changeset
343 \n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10807
diff changeset
344 The number of elements of @var{x} should be divisible by the bit length of\n\
10846
a4f482e66b65 Grammarcheck more of the documentation.
Rik <octave@nomad.inbox5.com>
parents: 10840
diff changeset
345 @var{class}. If it is not, excess bits are discarded. Bits come in\n\
11553
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Rik <octave@nomad.inbox5.com>
parents: 11523
diff changeset
346 increasing order of significance, i.e., @code{x(1)} is bit 0, @code{x(2)} is\n\
20172
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line.
Rik <rik@octave.org>
parents: 19697
diff changeset
347 bit 1, etc.\n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line.
Rik <rik@octave.org>
parents: 19697
diff changeset
348 \n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line.
Rik <rik@octave.org>
parents: 19697
diff changeset
349 The result is a row vector if @var{x} is a row vector, otherwise it is a\n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line.
Rik <rik@octave.org>
parents: 19697
diff changeset
350 column vector.\n\
11572
7d6d8c1e471f Grammarcheck Texinfo for files in src directory.
Rik <octave@nomad.inbox5.com>
parents: 11553
diff changeset
351 @seealso{bitunpack, typecast}\n\
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diff changeset
352 @end deftypefn")
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diff changeset
353 {
19174
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diff changeset
354 if (args.length () != 2)
6f3e922c5197 doc: Improve docstrings for typecast, bitpack, bitunpack.
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diff changeset
355 print_usage ();
20800
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diff changeset
356
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diff changeset
357 if (! args(0).is_bool_type ())
19174
6f3e922c5197 doc: Improve docstrings for typecast, bitpack, bitunpack.
Rik <rik@octave.org>
parents: 17787
diff changeset
358 error ("bitpack: X must be a logical array");
9671
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parents: 9036
diff changeset
359
20939
b17fda023ca6 maint: Use new C++ archetype in more files.
Rik <rik@octave.org>
parents: 20921
diff changeset
360 octave_value retval;
b17fda023ca6 maint: Use new C++ archetype in more files.
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diff changeset
361
20800
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diff changeset
362 boolNDArray bitp = args(0).bool_array_value ();
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diff changeset
363
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diff changeset
364 std::string numclass = args(1).string_value ();
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dbateman
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diff changeset
365
20800
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diff changeset
366 if (numclass.size () == 0)
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diff changeset
367 ;
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diff changeset
368 else if (numclass == "char")
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diff changeset
369 retval = octave_value (do_bitpack<charNDArray> (bitp), '\'');
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diff changeset
370 else if (numclass[0] == 'i')
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diff changeset
371 {
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parents: 20555
diff changeset
372 if (numclass == "int8")
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diff changeset
373 retval = do_bitpack<int8NDArray> (bitp);
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diff changeset
374 else if (numclass == "int16")
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diff changeset
375 retval = do_bitpack<int16NDArray> (bitp);
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diff changeset
376 else if (numclass == "int32")
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diff changeset
377 retval = do_bitpack<int32NDArray> (bitp);
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diff changeset
378 else if (numclass == "int64")
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diff changeset
379 retval = do_bitpack<int64NDArray> (bitp);
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diff changeset
380 }
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diff changeset
381 else if (numclass[0] == 'u')
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diff changeset
382 {
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parents: 20555
diff changeset
383 if (numclass == "uint8")
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parents: 20555
diff changeset
384 retval = do_bitpack<uint8NDArray> (bitp);
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parents: 20555
diff changeset
385 else if (numclass == "uint16")
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diff changeset
386 retval = do_bitpack<uint16NDArray> (bitp);
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diff changeset
387 else if (numclass == "uint32")
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diff changeset
388 retval = do_bitpack<uint32NDArray> (bitp);
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diff changeset
389 else if (numclass == "uint64")
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diff changeset
390 retval = do_bitpack<uint64NDArray> (bitp);
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diff changeset
391 }
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diff changeset
392 else if (numclass == "single")
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diff changeset
393 retval = do_bitpack<FloatNDArray> (bitp);
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John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
394 else if (numclass == "double")
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
395 retval = do_bitpack<NDArray> (bitp);
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
396 else if (numclass == "single complex")
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
397 retval = do_bitpack<FloatComplexNDArray> (bitp);
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
398 else if (numclass == "double complex")
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
399 retval = do_bitpack<ComplexNDArray> (bitp);
6869
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
dbateman
parents:
diff changeset
400
20800
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
401 if (retval.is_undefined ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
402 error ("bitpack: cannot pack to %s class", numclass.c_str ());
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
403
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
404 return retval;
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
405 }
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
406
21389
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
407 /*
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
408 %!assert (bitpack (zeros (1, 8, "logical"), "char"), "\0")
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
409 %!assert (bitpack (zeros (1, 8, "logical"), "int8"), int8 (0))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
410 %!assert (bitpack (zeros (1, 8, "logical"), "uint8"), uint8 (0))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
411 %!assert (bitpack (zeros (1, 16, "logical"), "int16"), int16 (0))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
412 %!assert (bitpack (zeros (1, 16, "logical"), "uint16"), uint16 (0))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
413 %!assert (bitpack (zeros (1, 32, "logical"), "int32"), int32 (0))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
414 %!assert (bitpack (zeros (1, 32, "logical"), "uint32"), uint32 (0))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
415 %!assert (bitpack (zeros (1, 64, "logical"), "int64"), int64 (0))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
416 %!assert (bitpack (zeros (1, 64, "logical"), "uint64"), uint64 (0))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
417 %!assert (bitpack (zeros (1, 32, "logical"), "single"), single (0))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
418 %!assert (bitpack (zeros (1, 64, "logical"), "double"), double (0))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
419 %!assert (bitpack (zeros (1, 64, "logical"), "single complex"), single (0))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
420 %!assert (bitpack (zeros (1, 128, "logical"), "double complex"), double (0))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
421
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
422 %!error bitpack ()
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
423 %!error bitpack (1)
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
424 %!error bitpack (1, 2, 3)
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
425 %!error bitpack (1, "invalid")
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
426 %!error bitpack (1, "double")
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
427 %!error bitpack (false, "invalid")
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
428 %!error bitpack (false, "double")
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
429 */
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
430
21139
538b57866b90 consistently use "typename" intead of "class" in template declarations
John W. Eaton <jwe@octave.org>
parents: 21100
diff changeset
431 template <typename ArrayType>
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
432 boolNDArray
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
433 do_bitunpack (const ArrayType& array)
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
434 {
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
435 typedef typename ArrayType::element_type T;
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
436 octave_idx_type n = array.numel () * sizeof (T)
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
437 * std::numeric_limits<unsigned char>::digits;
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
438
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
439 boolNDArray retval (get_vec_dims (array.dims (), n));
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
440
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
441 const char *packed = reinterpret_cast<const char *> (array.fortran_vec ());
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
442 bool *bits = retval.fortran_vec ();
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
443
17396
0b644adf4f31 speak CHAR_BIT in C++-ese
John W. Eaton <jwe@octave.org>
parents: 17281
diff changeset
444 octave_idx_type m = n / std::numeric_limits<unsigned char>::digits;
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
445
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
446 for (octave_idx_type i = 0; i < m; i++)
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
447 {
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
448 char c = packed[i];
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
449 bits[0] = c & 1;
17396
0b644adf4f31 speak CHAR_BIT in C++-ese
John W. Eaton <jwe@octave.org>
parents: 17281
diff changeset
450 for (int j = 1; j < std::numeric_limits<unsigned char>::digits; j++)
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
451 bits[j] = (c >>= 1) & 1;
17396
0b644adf4f31 speak CHAR_BIT in C++-ese
John W. Eaton <jwe@octave.org>
parents: 17281
diff changeset
452 bits += std::numeric_limits<unsigned char>::digits;
6869
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
dbateman
parents:
diff changeset
453 }
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
dbateman
parents:
diff changeset
454
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
dbateman
parents:
diff changeset
455 return retval;
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman]
dbateman
parents:
diff changeset
456 }
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
457
15039
e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory
Rik <rik@octave.org>
parents: 14360
diff changeset
458 DEFUN (bitunpack, args, ,
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
459 "-*- texinfo -*-\n\
20853
1142cf6abc0d 2015 Code Sprint: remove class of function from docstring for all C++ files.
Rik <rik@octave.org>
parents: 20831
diff changeset
460 @deftypefn {} {@var{y} =} bitunpack (@var{x})\n\
19174
6f3e922c5197 doc: Improve docstrings for typecast, bitpack, bitunpack.
Rik <rik@octave.org>
parents: 17787
diff changeset
461 Return a logical array @var{y} corresponding to the raw bit patterns of\n\
6f3e922c5197 doc: Improve docstrings for typecast, bitpack, bitunpack.
Rik <rik@octave.org>
parents: 17787
diff changeset
462 @var{x}.\n\
6f3e922c5197 doc: Improve docstrings for typecast, bitpack, bitunpack.
Rik <rik@octave.org>
parents: 17787
diff changeset
463 \n\
6f3e922c5197 doc: Improve docstrings for typecast, bitpack, bitunpack.
Rik <rik@octave.org>
parents: 17787
diff changeset
464 @var{x} must belong to one of the built-in numeric classes:\n\
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
465 \n\
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
466 @example\n\
9758
09da0bd91412 Periodic grammar check of Octave documentation files to ensure common format
Rik <rdrider0-list@yahoo.com>
parents: 9689
diff changeset
467 @group\n\
19174
6f3e922c5197 doc: Improve docstrings for typecast, bitpack, bitunpack.
Rik <rik@octave.org>
parents: 17787
diff changeset
468 \"double\"\n\
6f3e922c5197 doc: Improve docstrings for typecast, bitpack, bitunpack.
Rik <rik@octave.org>
parents: 17787
diff changeset
469 \"single\"\n\
14360
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
470 \"char\"\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
471 \"int8\"\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
472 \"int16\"\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
473 \"int32\"\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
474 \"int64\"\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
475 \"uint8\"\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
476 \"uint16\"\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
477 \"uint32\"\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
478 \"uint64\"\n\
9758
09da0bd91412 Periodic grammar check of Octave documentation files to ensure common format
Rik <rdrider0-list@yahoo.com>
parents: 9689
diff changeset
479 @end group\n\
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
480 @end example\n\
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
481 \n\
11553
01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory.
Rik <octave@nomad.inbox5.com>
parents: 11523
diff changeset
482 The result is a row vector if @var{x} is a row vector; otherwise, it is a\n\
10846
a4f482e66b65 Grammarcheck more of the documentation.
Rik <octave@nomad.inbox5.com>
parents: 10840
diff changeset
483 column vector.\n\
11572
7d6d8c1e471f Grammarcheck Texinfo for files in src directory.
Rik <octave@nomad.inbox5.com>
parents: 11553
diff changeset
484 @seealso{bitpack, typecast}\n\
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
485 @end deftypefn")
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
486 {
20800
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
487 if (args.length () != 1)
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
488 print_usage ();
20921
4d3daf7e43f3 eliminate trailing whitespace in source files
John W. Eaton <jwe@octave.org>
parents: 20853
diff changeset
489
20800
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
490 if (! (args(0).is_numeric_type () || args(0).is_string ()))
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
491 error ("bitunpack: argument must be a number or a string");
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
492
20939
b17fda023ca6 maint: Use new C++ archetype in more files.
Rik <rik@octave.org>
parents: 20921
diff changeset
493 octave_value retval;
b17fda023ca6 maint: Use new C++ archetype in more files.
Rik <rik@octave.org>
parents: 20921
diff changeset
494
20800
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
495 octave_value array = args(0);
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
496
20800
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
497 if (array.is_string ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
498 retval = do_bitunpack (array.char_array_value ());
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
499 else if (array.is_integer_type ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
500 {
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
501 if (array.is_int8_type ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
502 retval = do_bitunpack (array.int8_array_value ());
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
503 else if (array.is_int16_type ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
504 retval = do_bitunpack (array.int16_array_value ());
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
505 else if (array.is_int32_type ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
506 retval = do_bitunpack (array.int32_array_value ());
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
507 else if (array.is_int64_type ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
508 retval = do_bitunpack (array.int64_array_value ());
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
509 else if (array.is_uint8_type ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
510 retval = do_bitunpack (array.uint8_array_value ());
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
511 else if (array.is_uint16_type ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
512 retval = do_bitunpack (array.uint16_array_value ());
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
513 else if (array.is_uint32_type ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
514 retval = do_bitunpack (array.uint32_array_value ());
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
515 else if (array.is_uint64_type ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
516 retval = do_bitunpack (array.uint64_array_value ());
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
517 else
20800
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
518 assert (0);
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
519 }
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
520 else if (array.is_complex_type ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
521 {
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
522 if (array.is_single_type ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
523 retval = do_bitunpack (array.float_complex_array_value ());
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
524 else
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
525 retval = do_bitunpack (array.complex_array_value ());
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
526 }
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
527 else if (array.is_real_type ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
528 {
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
529 if (array.is_single_type ())
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
530 retval = do_bitunpack (array.float_array_value ());
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
531 else
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
532 retval = do_bitunpack (array.array_value ());
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
533 }
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
534 else
20800
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
535 error ("bitunpack: invalid input class: %s",
fb128aafc322 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
536 array.class_name ().c_str ());
9671
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
537
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
538 return retval;
e4b383a0effa merge reinterpret.cc into typecast.cc
Jaroslav Hajek <highegg@gmail.com>
parents: 9036
diff changeset
539 }
21389
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
540
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
541 /*
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
542 %!assert (bitunpack ("\0"), zeros (1, 8, "logical"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
543 %!assert (bitunpack (int8 (0)), zeros (1, 8, "logical"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
544 %!assert (bitunpack (uint8 (0)), zeros (1, 8, "logical"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
545 %!assert (bitunpack (int16 (0)), zeros (1, 16, "logical"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
546 %!assert (bitunpack (uint16 (0)), zeros (1, 16, "logical"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
547 %!assert (bitunpack (int32 (0)), zeros (1, 32, "logical"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
548 %!assert (bitunpack (uint32 (0)), zeros (1, 32, "logical"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
549 %!assert (bitunpack (int64 (0)), zeros (1, 64, "logical"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
550 %!assert (bitunpack (uint64 (0)), zeros (1, 64, "logical"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
551 %!assert (bitunpack (single (0)), zeros (1, 32, "logical"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
552 %!assert (bitunpack (double (0)), zeros (1, 64, "logical"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
553 %!assert (bitunpack (complex (single (0))), zeros (1, 64, "logical"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
554 %!assert (bitunpack (complex (double (0))), zeros (1, 128, "logical"))
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
555
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
556 %!error bitunpack ()
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
557 %!error bitunpack (1, 2)
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
558 %!error bitunpack ({})
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
559 */
64efef931bd0 Add BIST tests for bitpack, bitunpack, isglobal, and typecast
Mike Miller <mtmiller@octave.org>
parents: 21301
diff changeset
560