|
2538
|
1 ## Copyright (C) 1995, 1996 Kurt Hornik |
|
3426
|
2 ## |
|
2538
|
3 ## This program is free software; you can redistribute it and/or modify |
|
|
4 ## it under the terms of the GNU General Public License as published by |
|
|
5 ## the Free Software Foundation; either version 2, or (at your option) |
|
|
6 ## any later version. |
|
3426
|
7 ## |
|
2538
|
8 ## This program is distributed in the hope that it will be useful, but |
|
|
9 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
|
|
10 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
3426
|
11 ## General Public License for more details. |
|
|
12 ## |
|
2538
|
13 ## You should have received a copy of the GNU General Public License |
|
|
14 ## along with this file. If not, write to the Free Software Foundation, |
|
|
15 ## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
|
|
16 |
|
3321
|
17 ## -*- texinfo -*- |
|
|
18 ## @deftypefn {Mapping Function} {} xor (@var{x}, @var{y}) |
|
|
19 ## Return the `exclusive or' of the entries of @var{x} and @var{y}. |
|
|
20 ## For boolean expressions @var{x} and @var{y}, |
|
|
21 ## @code{xor (@var{x}, @var{y})} is true if and only if @var{x} or @var{y} |
|
|
22 ## is true, but not if both @var{x} and @var{y} are true. |
|
|
23 ## @end deftypefn |
|
2538
|
24 |
|
|
25 ## Author: KH <Kurt.Hornik@ci.tuwien.ac.at> |
|
|
26 ## Created: 16 September 1994 |
|
|
27 ## Adapted-By: jwe |
|
|
28 |
|
|
29 function z = xor (x, y) |
|
|
30 |
|
2621
|
31 if (nargin == 2) |
|
3426
|
32 if (is_scalar (x) || is_scalar (y) || size (x) == size (y)) |
|
2870
|
33 z = logical ((x | y) - (x & y)); |
|
2621
|
34 else |
|
|
35 error ("xor: x and y must be of common size or scalars"); |
|
|
36 endif |
|
|
37 else |
|
2538
|
38 usage ("xor (x, y)"); |
|
|
39 endif |
|
|
40 |
|
|
41 endfunction |
