Mercurial > octave
annotate libinterp/corefcn/hex2num.cc @ 21966:112b20240c87
move docstrings in C++ files out of C strings and into comments
* __contourc__.cc, __dispatch__.cc, __dsearchn__.cc, __ichol__.cc,
__ilu__.cc, __lin_interpn__.cc, __luinc__.cc, __magick_read__.cc,
__pchip_deriv__.cc, __qp__.cc, balance.cc, besselj.cc, betainc.cc,
bitfcns.cc, bsxfun.cc, cellfun.cc, colloc.cc, conv2.cc, daspk.cc,
dasrt.cc, dassl.cc, data.cc, debug.cc, defaults.cc, det.cc, dirfns.cc,
dlmread.cc, dot.cc, eig.cc, ellipj.cc, error.cc, fft.cc, fft2.cc,
fftn.cc, file-io.cc, filter.cc, find.cc, gammainc.cc, gcd.cc,
getgrent.cc, getpwent.cc, getrusage.cc, givens.cc, graphics.cc,
hash.cc, help.cc, hess.cc, hex2num.cc, input.cc, inv.cc, kron.cc,
load-path.cc, load-save.cc, lookup.cc, ls-oct-text.cc, lsode.cc,
lu.cc, mappers.cc, matrix_type.cc, max.cc, mgorth.cc, nproc.cc,
oct-hist.cc, octave-link.cc, ordschur.cc, pager.cc, pinv.cc,
pr-output.cc, profiler.cc, psi.cc, pt-jit.cc, quad.cc, quadcc.cc,
qz.cc, rand.cc, rcond.cc, regexp.cc, schur.cc, sighandlers.cc,
sparse.cc, spparms.cc, sqrtm.cc, str2double.cc, strfind.cc, strfns.cc,
sub2ind.cc, svd.cc, sylvester.cc, symtab.cc, syscalls.cc, sysdep.cc,
time.cc, toplev.cc, tril.cc, tsearch.cc, typecast.cc, urlwrite.cc,
utils.cc, variables.cc, __delaunayn__.cc, __eigs__.cc,
__fltk_uigetfile__.cc, __glpk__.cc, __init_fltk__.cc,
__init_gnuplot__.cc, __osmesa_print__.cc, __voronoi__.cc, amd.cc,
audiodevinfo.cc, audioread.cc, ccolamd.cc, chol.cc, colamd.cc,
convhulln.cc, dmperm.cc, fftw.cc, qr.cc, symbfact.cc, symrcm.cc,
ov-base.cc, ov-bool-mat.cc, ov-cell.cc, ov-class.cc, ov-classdef.cc,
ov-fcn-handle.cc, ov-fcn-inline.cc, ov-flt-re-mat.cc, ov-int16.cc,
ov-int32.cc, ov-int64.cc, ov-int8.cc, ov-java.cc, ov-null-mat.cc,
ov-oncleanup.cc, ov-range.cc, ov-re-mat.cc, ov-struct.cc,
ov-typeinfo.cc, ov-uint16.cc, ov-uint32.cc, ov-uint64.cc, ov-uint8.cc,
ov-usr-fcn.cc, ov.cc, octave.cc, pt-arg-list.cc, pt-binop.cc,
pt-eval.cc, pt-mat.cc, lex.ll, oct-parse.in.yy:
Docstrings are now comments instead of C strings.
* build-aux/mk-opts.pl: Emit docstrings as comments instead of C
strings.
* DASPK-opts.in, LSODE-opts.in: Don't quote " in docstring fragments.
* builtins.h: Include builtin-defun-decls.h unconditionally.
* defun.h (DEFUN, DEFUNX, DEFCONSTFUN): Simply emit declaration.
(DEFALIAS): Always expand to nothing.
* defun-dld.h: No special macro expansions for MAKE_BUILTINS.
(DEFUN_DLD): Use FORWARD_DECLARE_FUN.
(DEFUNX_DLD): Use FORWARD_DECLARE_FUNX.
* defun-int.h: No special macro expansions for MAKE_BUILTINS.
(FORWARD_DECLARE_FUN, FORWARD_DECLARE_FUNX): New macros.
(DEFINE_FUN_INSTALLER_FUN): If compiling an Octave source file, pass
"external-doc" to DEFINE_FUNX_INSTALLER_FUN.
(DEFUN_INTERNAL, DEFCONSTFUN_INTERNAL, DEFUNX_INTERNAL,
DEFALIAS_INTERNAL): Delete.
* common.mk (move_if_change_rule): New macro.
(simple_move_if_change_rule): Define using move_if_change_rule.
* find-defun-files.sh (DEFUN_PATTERN): Update. Don't transform file
name extension to ".df".
* libinterp/mk-pkg-add, gendoc.pl: Operate directly on source files.
* mkbuiltins: New argument, SRCDIR. Operate directly on source files.
* mkdefs: Delete.
* libinterp/module.mk (BUILT_SOURCES): Update list to contain only
files included in other source files.
(GENERATED_MAKE_BUILTINS_INCS, DEF_FILES): Delete.
(LIBINTERP_BUILT_DISTFILES): Include $(OPT_HANDLERS) here.
(LIBINTERP_BUILT_NODISTFILES): Not here. Remove $(ALL_DEF_FILES from
the list.
(libinterp_EXTRA_DIST): Remove mkdefs from the list.
(FOUND_DEFUN_FILES): Rename from SRC_DEF_FILES.
(DLDFCN_DEFUN_FILES): Rename from DLDFCN_DEF_FILES.
(SRC_DEFUN_FILES): Rename from SRC_DEF_FILES.
(ALL_DEFUN_FILES): Rename from ALL_DEF_FILES.
(%.df: %.cc): Delete pattern rule.
(libinterp/build-env-features.cc, libinterp/builtins.cc,
libinterp/dldfcn/PKG_ADD): Use mv instead of move-if-change.
(libinterp/builtins.cc, libinterp/builtin-defun-decls.h):
Update mkbuiltins command.
($(srcdir)/libinterp/DOCSTRINGS): Update gendoc.pl command.
* liboctave/module.mk (BUILT_SOURCES): Don't include
liboctave-build-info.cc in the list.
author | John W. Eaton <jwe@octave.org> |
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date | Tue, 21 Jun 2016 16:07:51 -0400 |
parents | 6b4f6339df91 |
children | bac0d6f07a3e |
rev | line source |
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1 /* |
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2 |
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3 Copyright (C) 2008-2015 David Bateman |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 3 of the License, or (at your |
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10 option) any later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 #if defined (HAVE_CONFIG_H) |
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24 # include "config.h" |
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25 #endif |
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26 |
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27 #include <algorithm> |
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28 |
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29 #include "defun.h" |
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30 #include "error.h" |
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31 #include "errwarn.h" |
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32 #include "ovl.h" |
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33 #include "utils.h" |
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34 |
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35 DEFUN (hex2num, args, , |
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36 doc: /* -*- texinfo -*- |
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37 @deftypefn {} {@var{n} =} hex2num (@var{s}) |
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38 @deftypefnx {} {@var{n} =} hex2num (@var{s}, @var{class}) |
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39 Typecast the 16 character hexadecimal character string to an IEEE 754 |
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40 double precision number. |
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41 |
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42 If fewer than 16 characters are given the strings are right padded with |
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43 @qcode{'0'} characters. |
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44 |
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45 Given a string matrix, @code{hex2num} treats each row as a separate number. |
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46 |
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47 @example |
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48 @group |
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49 hex2num (["4005bf0a8b145769"; "4024000000000000"]) |
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50 @result{} [2.7183; 10.000] |
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51 @end group |
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52 @end example |
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53 |
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54 The optional argument @var{class} can be passed as the string |
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55 @qcode{"single"} to specify that the given string should be interpreted as |
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56 a single precision number. In this case, @var{s} should be an 8 character |
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57 hexadecimal string. For example: |
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58 |
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59 @example |
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60 @group |
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61 hex2num (["402df854"; "41200000"], "single") |
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62 @result{} [2.7183; 10.000] |
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63 @end group |
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64 @end example |
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65 @seealso{num2hex, hex2dec, dec2hex} |
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66 @end deftypefn */) |
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67 { |
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68 int nargin = args.length (); |
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69 |
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70 if (nargin < 1 || nargin > 2) |
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71 print_usage (); |
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72 |
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73 if (nargin == 2 && ! args(1).is_string ()) |
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74 error ("hex2num: CLASS must be a string"); |
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75 |
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76 const charMatrix cmat = args(0).char_matrix_value (); |
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77 std::string prec = (nargin == 2) ? args(1).string_value () : "double"; |
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78 bool is_single = (prec == "single"); |
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79 octave_idx_type nchars = (is_single) ? 8 : 16; |
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80 |
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81 if (cmat.columns () > nchars) |
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82 error ("hex2num: S must be no more than %d characters", nchars); |
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83 else if (prec != "double" && prec != "single") |
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84 error ("hex2num: CLASS must be either \"double\" or \"single\""); |
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85 |
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86 octave_value retval; |
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87 octave_idx_type nr = cmat.rows (); |
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88 octave_idx_type nc = cmat.columns (); |
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89 |
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90 if (is_single) |
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91 { |
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92 FloatColumnVector m (nr); |
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93 |
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94 for (octave_idx_type i = 0; i < nr; i++) |
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95 { |
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96 union |
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97 { |
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98 uint32_t ival; |
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99 float dval; |
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100 } num; |
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101 |
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102 num.ival = 0; |
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103 |
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104 for (octave_idx_type j = 0; j < nc; j++) |
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105 { |
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106 unsigned char ch = cmat.elem (i, j); |
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107 |
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108 if (! isxdigit (ch)) |
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109 error ("hex2num: illegal character found in string S"); |
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110 |
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111 num.ival <<= 4; |
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112 if (ch >= 'a') |
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113 num.ival += static_cast<uint32_t> (ch - 'a' + 10); |
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114 else if (ch >= 'A') |
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115 num.ival += static_cast<uint32_t> (ch - 'A' + 10); |
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116 else |
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117 num.ival += static_cast<uint32_t> (ch - '0'); |
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118 } |
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119 |
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120 if (nc < nchars) |
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121 num.ival <<= (nchars - nc) * 4; |
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122 |
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123 m(i) = num.dval; |
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124 } |
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125 |
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126 retval = m; |
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127 } |
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128 else |
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129 { |
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130 ColumnVector m (nr); |
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131 |
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132 for (octave_idx_type i = 0; i < nr; i++) |
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133 { |
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134 union |
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135 { |
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136 uint64_t ival; |
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137 double dval; |
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138 } num; |
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139 |
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140 num.ival = 0; |
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141 |
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142 for (octave_idx_type j = 0; j < nc; j++) |
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143 { |
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144 unsigned char ch = cmat.elem (i, j); |
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145 |
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146 if (! isxdigit (ch)) |
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147 error ("hex2num: illegal character found in string S"); |
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148 |
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149 num.ival <<= 4; |
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150 if (ch >= 'a') |
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151 num.ival += static_cast<uint64_t> (ch - 'a' + 10); |
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152 else if (ch >= 'A') |
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153 num.ival += static_cast<uint64_t> (ch - 'A' + 10); |
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154 else |
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155 num.ival += static_cast<uint64_t> (ch - '0'); |
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156 } |
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157 |
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158 if (nc < nchars) |
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159 num.ival <<= (nchars - nc) * 4; |
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160 |
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161 m(i) = num.dval; |
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162 } |
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163 |
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164 retval = m; |
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165 } |
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166 |
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167 return retval; |
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168 } |
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169 |
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170 /* |
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171 %!assert (hex2num (["c00";"bff";"000";"3ff";"400"]), [-2:2]') |
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172 %!assert (hex2num (["c00";"bf8";"000";"3f8";"400"], "single"), single([-2:2])') |
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173 */ |
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174 |
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175 DEFUN (num2hex, args, , |
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176 doc: /* -*- texinfo -*- |
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177 @deftypefn {} {@var{s} =} num2hex (@var{n}) |
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178 Typecast a double or single precision number or vector to a 8 or 16 |
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179 character hexadecimal string of the IEEE 754 representation of the number. |
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180 |
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181 For example: |
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182 |
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183 @example |
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184 @group |
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185 num2hex ([-1, 1, e, Inf]) |
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186 @result{} "bff0000000000000 |
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187 3ff0000000000000 |
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188 4005bf0a8b145769 |
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189 7ff0000000000000" |
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190 @end group |
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191 @end example |
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192 |
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193 If the argument @var{n} is a single precision number or vector, the returned |
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194 string has a length of 8. For example: |
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195 |
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196 @example |
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197 @group |
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198 num2hex (single ([-1, 1, e, Inf])) |
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199 @result{} "bf800000 |
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200 3f800000 |
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201 402df854 |
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202 7f800000" |
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203 @end group |
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204 @end example |
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205 @seealso{hex2num, hex2dec, dec2hex} |
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206 @end deftypefn */) |
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207 { |
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208 if (args.length () != 1) |
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209 print_usage (); |
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210 |
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211 if (args(0).is_complex_type ()) |
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212 error ("num2hex: N must be real"); |
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213 |
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214 octave_value retval; |
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215 |
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216 if (args(0).is_single_type ()) |
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217 { |
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218 const FloatColumnVector v (args(0).float_vector_value ()); |
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219 |
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220 octave_idx_type nchars = 8; |
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221 octave_idx_type nr = v.numel (); |
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222 charMatrix m (nr, nchars); |
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223 const float *pv = v.fortran_vec (); |
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224 |
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225 for (octave_idx_type i = 0; i < nr; i++) |
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226 { |
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227 union |
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228 { |
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229 uint32_t ival; |
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230 float dval; |
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231 } num; |
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232 |
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233 num.dval = *pv++; |
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234 |
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235 for (octave_idx_type j = 0; j < nchars; j++) |
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236 { |
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237 unsigned char ch = |
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238 static_cast<char>(num.ival >> ((nchars - 1 - j) * 4) & 0xF); |
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239 if (ch >= 10) |
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240 ch += 'a' - 10; |
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241 else |
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242 ch += '0'; |
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243 |
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244 m.elem (i, j) = ch; |
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245 } |
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246 } |
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247 |
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248 retval = m; |
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249 } |
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250 else |
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251 { |
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252 const ColumnVector v (args(0).vector_value ()); |
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253 |
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254 octave_idx_type nchars = 16; |
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255 octave_idx_type nr = v.numel (); |
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256 charMatrix m (nr, nchars); |
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257 const double *pv = v.fortran_vec (); |
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258 |
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259 for (octave_idx_type i = 0; i < nr; i++) |
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260 { |
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261 union |
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262 { |
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263 uint64_t ival; |
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264 double dval; |
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265 } num; |
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266 |
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267 num.dval = *pv++; |
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268 |
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269 for (octave_idx_type j = 0; j < nchars; j++) |
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270 { |
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271 unsigned char ch = |
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272 static_cast<char>(num.ival >> ((nchars - 1 - j) * 4) & 0xF); |
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273 if (ch >= 10) |
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274 ch += 'a' - 10; |
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275 else |
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276 ch += '0'; |
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277 |
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278 m.elem (i, j) = ch; |
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279 } |
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280 } |
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281 |
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282 retval = m; |
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283 } |
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284 |
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285 return retval; |
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286 } |
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287 |
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288 /* |
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289 %!assert (num2hex (-2:2), ["c000000000000000";"bff0000000000000";"0000000000000000";"3ff0000000000000";"4000000000000000"]) |
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290 %!assert (num2hex (single (-2:2)), ["c0000000";"bf800000";"00000000";"3f800000";"40000000"]) |
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291 |
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292 %!error num2hex () |
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293 %!error num2hex (1,2) |
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294 %!error num2hex (1j) |
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295 */ |