%BITXOR(expr:expr)%BITXOR returns the bit-wise exclusive ORing of the bits of the two arguments. That is, the result bit is ON when just one of the corresponding bits in the arguments are ON, and OFF otherwise.
The argument to this built-in function can be either character or numeric. For numeric arguments, if they are not integer or unsigned, they are first converted to integer. If the value does not fit in an 8-byte integer, a numeric overflow exception is issued.
%BITXOR takes exactly two arguments. The result type is the same as the types of the arguments. For numeric arguments, the result is unsigned if all arguments are unsigned, and integer otherwise.
The length is the length of the largest operand. If the arguments have different lengths, they are padded on the left with bit zeros for numeric arguments. Shorter character arguments are padded on the right with bit zeros .
%BITXOR can be coded in any expression. It can also be coded as the argument to a File or Definition Specification keyword if all arguments are known at compile-time. If all arguments of this built-in function are hex literals, the compiler produces a constant-folded result that is a hex literal.
For more information, see Bit Operations or Built-in Functions.