/*
 * $Id$
 */

/* $DOC$
   $NAME$
      ft_ByteXor()
   $CATEGORY$
      String
   $ONELINER$
      Perform bit-wise XOR on two ASCII characters (bytes)
   $SYNTAX$
      ft_ByteXor( <cByte1>, <cByte2> ) -> cNewByte
   $ARGUMENTS$
      <cByte1> and <cByte2> are characters from Chr(0) to Chr(255).
      May be passed in Chr() form, as character literals, or
      as expressions evaluating to Chr() values.
   $RETURNS$
      Returns resulting byte, in Chr() form.  If parameters are faulty,
      returns NIL.
   $DESCRIPTION$
      Can be used for bit-wise byte manipulation.  In effect, this is a
      bit-by-bit XOR operation.  Equivalent to XOR assembler instruction.

      This function is presented to illustrate that bit-wise operations
      are possible with Clipper code.  For greater speed, write .c or
      .asm versions and use the Clipper Extend system.
   $EXAMPLES$
      // This code performs a bit-wise XOR on two bytes represented
      // by Chr( 32 ) and Chr( 55 ):

      cNewByte := ft_ByteXor( Chr( 32 ), Chr( 55 ) )
      ? Asc( cNewByte )     // result: 23
      ? cNewByte            // result: non-printable character
   $SEEALSO$
      ft_ByteOr() ft_ByteNot() ft_ByteNeg() ft_ByteAnd()
   $END$
 */
