% BITXOR BITXOR Bitwise Boolean Exclusive-Or (XOR) Operation
% 
% Usage
% 
% Performs a bitwise binary xor operation on the two arguments and
% returns the result.  The syntax for its use is
% 
%    y = bitxor(a,b)
% 
% where a and b are unsigned integer arrays.  The xor operation
% is performed using 32 bit unsigned intermediates.  Note that if a
% or b is a scalar, then each element of the other array is xored with
% that scalar.  Otherwise the two arrays must match in size.

function y = bitxor(a,b)
  if (isscalar(a))
    a = repmat(a,size(b));
  end
  if (isscalar(b))
    b = repmat(b,size(a));
  end
  if (any(size(a) ~= size(b)))
    error('Argument arrays must be the same size');
  end
  A = int2bin(a,32); B = int2bin(b,32);
  y = bin2int((A & ~B) | (~A & B));