Mercurial > octave

annotate src/DLD-FUNCTIONS/hex2num.cc @ 7639:b2fbb393a072

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add the num2hex and hex2num functions
author David Bateman <dbateman@free.fr>
date Tue, 25 Mar 2008 20:22:46 -0400
parents
children 401d54a83690
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
7639
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
1 /*
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
2
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
3 Copyright (C) 2008 David Bateman
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
4
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
5 This file is part of Octave.
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
6
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
7 Octave is free software; you can redistribute it and/or modify it
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
8 under the terms of the GNU General Public License as published by the
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
9 Free Software Foundation; either version 3 of the License, or (at your
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
10 option) any later version.
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
11
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
12 Octave is distributed in the hope that it will be useful, but WITHOUT
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
15 for more details.
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
16
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
17 You should have received a copy of the GNU General Public License
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
18 along with Octave; see the file COPYING. If not, see
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
19 <http://www.gnu.org/licenses/>.
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
20
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
21 */
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
22
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
23 #ifdef HAVE_CONFIG_H
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
24 #include <config.h>
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
25 #endif
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
26
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
27 #include <algorithm>
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
28
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
29 #include "defun-dld.h"
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
30 #include "error.h"
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
31 #include "gripes.h"
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
32 #include "oct-obj.h"
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
33 #include "utils.h"
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
34
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
35 DEFUN_DLD (hex2num, args, ,
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
36 "-*- texinfo -*-\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
37 @deftypefn {Loadable Function} {@var{n} =} hex2num (@var{s})\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
38 Typecast the 16 character hexadecimal character matrix to an IEEE 754\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
39 double precision number. If fewer than 16 characters are given the\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
40 strings are right padded with '0' characters.\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
41 \n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
42 Given a string matrix, @code{hex2num} treats each row as a separate\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
43 number.\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
44 \n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
45 @example\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
46 hex2num ([\"4005bf0a8b145769\";\"4024000000000000\"])\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
47 @result{} [2.7183; 10.000]\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
48 @end example\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
49 @seealso{num2hex, hex2dec, dec2hex}\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
50 @end deftypefn")
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
51 {
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
52 int nargin = args.length ();
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
53 octave_value retval;
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
54
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
55 if (nargin != 1)
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
56 print_usage ();
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
57 else
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
58 {
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
59 const charMatrix cmat = args(0).char_matrix_value ();
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
60
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
61 if (cmat.columns () > 16)
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
62 error ("hex2num: expecting no more than a 16 character string");
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
63 else if (! error_state)
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
64 {
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
65 octave_idx_type nr = cmat.rows ();
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
66 octave_idx_type nc = cmat.columns ();
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
67 ColumnVector m (nr);
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
68
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
69 for (octave_idx_type i = 0; i < nr; i++)
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
70 {
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
71 uint64_t num = 0;
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
72 for (octave_idx_type j = 0; j < nc; j++)
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
73 {
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
74 unsigned char ch = cmat.elem (i, j);
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
75
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
76 if (isxdigit (ch))
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
77 {
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
78 num <<= 4;
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
79 if (ch >= 'a')
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
80 num += static_cast<uint64_t> (ch - 'a' + 10);
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
81 else if (ch >= 'A')
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
82 num += static_cast<uint64_t> (ch - 'A' + 10);
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
83 else
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
84 num += static_cast<uint64_t> (ch - '0');
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
85 }
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
86 else
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
87 {
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
88 error ("hex2num: illegal character found in string");
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
89 break;
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
90 }
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
91 }
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
92
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
93 if (error_state)
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
94 break;
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
95 else
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
96 {
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
97 if (nc < 16)
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
98 num <<= (16 - nc) * 4;
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
99
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
100 m (i) = *reinterpret_cast<double *>(&num);
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
101
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
102 }
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
103 }
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
104
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
105 if (! error_state)
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
106 retval = m;
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
107 }
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
108 }
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
109
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
110 return retval;
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
111 }
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
112
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
113 /*
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
114
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
115 %!assert (hex2num(['c00';'bff';'000';'3ff';'400']),[-2:2]')
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
116
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
117 */
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
118
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
119
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
120
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
121 DEFUN_DLD (num2hex, args, ,
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
122 "-*- texinfo -*-\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
123 @deftypefn {Loadable Function} {@var{s} =} num2hex (@var{n})\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
124 Typecast a double precision number or vector to a 16 character hexadecimal\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
125 string of the IEEE 754 representation of the number. For example\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
126 \n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
127 @example\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
128 num2hex ([-1, 1, e, Inf, NaN, NA]);\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
129 @result{} \"bff0000000000000\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
130 3ff0000000000000\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
131 4005bf0a8b145769\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
132 7ff0000000000000\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
133 fff8000000000000\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
134 7ff00000000007a2\"\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
135 @end example\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
136 @seealso{hex2num, hex2dec, dec2hex}\n\
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
137 @end deftypefn")
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
138 {
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
139 int nargin = args.length ();
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
140 octave_value retval;
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
141
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
142 if (nargin != 1)
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
143 print_usage ();
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
144 else
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
145 {
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
146 const ColumnVector v (args(0).vector_value ());
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
147
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
148 if (! error_state)
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
149 {
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
150 octave_idx_type nr = v.length ();
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
151 charMatrix m (nr, 16);
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
152 const double *pv = v.fortran_vec ();
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
153
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
154 for (octave_idx_type i = 0; i < nr; i++)
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
155 {
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
156 const uint64_t num = *reinterpret_cast<const uint64_t *> (pv++);
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
157 for (octave_idx_type j = 0; j < 16; j++)
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
158 {
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
159 unsigned char ch =
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
160 static_cast<char> (num >> ((15 - j) * 4) & 0xF);
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
161 if (ch >= 10)
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
162 ch += 'a' - 10;
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
163 else
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
164 ch += '0';
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
165
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
166 m.elem (i, j) = ch;
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
167 }
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
168 }
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
169
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
170 retval = octave_value (m, true);
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
171 }
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
172 }
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
173
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
174 return retval;
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
175 }
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
176
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
177 /*
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
178
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
179 %!assert (num2hex (-2:2),['c000000000000000';'bff0000000000000';'0000000000000000';'3ff0000000000000';'4000000000000000'])
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
180
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
181 */
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
182
b2fbb393a072 Add the num2hex and hex2num functions
David Bateman <dbateman@free.fr>
parents:
diff changeset
183