FN_XOR()
 Perform a bitwise exclusive OR
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 Syntax
 
    fn_xor( <nInt1> | <cInt1>, <nInt2> ) -> nResult
 
 Arguments

   <nInt1> may either be a numeric integer, or a 16-bit character
   string that is the binary representation of a numeric integer.

   <nInt2> must be a numeric integer.

 Returns

   <nResult>, a numeric

 Description

    The value returned is obtained by performing a bitwise XOR
    with <nInt1> and <nInt2> as operands. If any parameters are
    invalid, the function will return zero.

 Examples

     ? fn_xor( 11, 12 )       // 7


 Source: N:\SRC\MISC\FNXOR.ASM

 Author: Ted Means