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## Copyright (C) 1995, 1996 Kurt Hornik
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2, or (at your option)
## any later version.
##
## This program is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this file. If not, write to the Free Software Foundation,
## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
## usage: xor (x, y)
##
## Returns the "exclusive or" of the entries of x and y.
## For boolean expressions x and y, xor (x, y) is true iff either x
## or y is true.
## Author: KH <Kurt.Hornik@ci.tuwien.ac.at>
## Created: 16 September 1994
## Adapted-By: jwe
function z = xor (x, y)
if (nargin == 2)
if (is_scalar (x) || is_scalar (y) || size (x) == size (y))
z = (x | y) - (x & y);
else
error ("xor: x and y must be of common size or scalars");
endif
else
usage ("xor (x, y)");
endif
endfunction
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