|
2303
|
1 ### Copyright (C) 1996 Kurt Hornik |
|
|
2 ### |
|
|
3 ### This file is part of Octave. |
|
|
4 ### |
|
|
5 ### Octave is free software; you can redistribute it and/or modify it |
|
|
6 ### under the terms of the GNU General Public License as published by |
|
|
7 ### the Free Software Foundation; either version 2, or (at your option) |
|
|
8 ### any later version. |
|
|
9 ### |
|
|
10 ### Octave is distributed in the hope that it will be useful, but |
|
|
11 ### WITHOUT ANY WARRANTY; without even the implied warranty of |
|
|
12 ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
|
13 ### General Public License for more details. |
|
|
14 ### |
|
|
15 ### You should have received a copy of the GNU General Public License |
|
|
16 ### along with Octave; see the file COPYING. If not, write to the Free |
|
|
17 ### Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
|
|
18 ### 02111-1307, USA. |
|
2268
|
19 |
|
2311
|
20 ## usage: dec2bin (x) |
|
|
21 ## |
|
|
22 ## Returns the binary number corresponding to the nonnegative integer |
|
|
23 ## x. For example, dec2bin (14) returns "1110". |
|
2268
|
24 |
|
2311
|
25 function y = dec2bin (x) |
|
2268
|
26 |
|
2303
|
27 ## Original version by Kurt Hornik <Kurt.Hornik@ci.tuwien.ac.at>. |
|
2268
|
28 |
|
|
29 if (nargin != 1) |
|
|
30 usage ("dec2bin (x)"); |
|
|
31 endif |
|
|
32 |
|
|
33 [nr, nc] = size (x); |
|
|
34 |
|
|
35 len = nr * nc; |
|
|
36 |
|
|
37 x = reshape (x, 1, len); |
|
|
38 |
|
|
39 eleo = empty_list_elements_ok; |
|
|
40 unwind_protect |
|
|
41 empty_list_elements_ok = 1; |
|
|
42 y = []; |
|
|
43 for i = 1:len |
|
|
44 tmp = x (i); |
|
|
45 if (tmp == round (tmp) && tmp >= 0) |
|
|
46 while (tmp >= 2) |
|
|
47 z = fix (tmp ./ 2); |
|
|
48 y = [y, tmp - 2 * z]; |
|
|
49 tmp = z; |
|
|
50 endwhile |
|
|
51 y = [y, tmp]; |
|
|
52 else |
|
|
53 error ("dec2hex: invalid conversion"); |
|
|
54 endif |
|
|
55 endfor |
|
|
56 y = fliplr (y); |
|
|
57 y = setstr (y + toascii ("0")); |
|
|
58 unwind_protect_cleanup |
|
|
59 empty_list_elements_ok = eleo; |
|
|
60 end_unwind_protect |
|
|
61 |
|
|
62 endfunction |
|
|
63 |
