2313
|
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: bin2dec (x) |
|
21 ## |
|
22 ## Returns the decimal number corresponding to the binary number in |
|
23 ## quotes. For example, bin2dec ("1110") returns 14. |
|
24 |
2268
|
25 function y = bin2dec (x) |
|
26 |
2311
|
27 ## Original version by Kurt Hornik <Kurt.Hornik@ci.tuwien.ac.at>. |
2268
|
28 |
|
29 if (nargin != 1) |
|
30 usage ("bin2dec (x)"); |
|
31 endif |
|
32 |
|
33 x = toascii (x) - toascii ("0"); |
|
34 |
|
35 if (all (x == 0 | x == 1)) |
|
36 y = sum ((x .* (ones (rows (x), 1) * 2.^((length (x) - 1) : -1 : 0)))')'; |
|
37 else |
|
38 error ("bin2dec: argument must be a string of zeros and ones"); |
|
39 endif |
|
40 |
|
41 endfunction |