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xor Logical and Integer Operator XOR (Exclusive OR)
<bool exp> xor <bool exp> { does a logical xor; result is Boolean }
<int exp> xor <int exp> { does a bitwise xor; result is Integer } [TP]
The operator XOR (exclusive OR) can be used for both boolean and
integer expressions. For boolean expressions, it uses the left truth
table below:
+-------------------------------------------------------------------------+
| <exp1> <exp2> | <exp1> xor <exp2> <bit1> <bit2> | <bit1> xor <bit2> |
|----------------+------------------------------------+-------------------|
| FALSE FALSE | FALSE 0 0 | 0 |
| FALSE TRUE | TRUE 0 1 | 1 |
| TRUE FALSE | TRUE 1 0 | 1 |
| TRUE TRUE | FALSE 1 1 | 0 |
+-------------------------------------------------------------------------+
For integer expressions, it does a bit-by-bit combination of the two
integer values, using the right truth table above. The result is a
sixteen-bit integer value.
<bool exp> any combination of Boolean values and operators.
<int expr> any combination of Integer values and operators.
-------------------------------- Example ---------------------------------
if (A = B) xor (A = C) then
Writeln('A is either B or C but not both');
I := $4123 xor $0F00; { I = $4E23 }
See Also:
and
or
not
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