Is there such a thing? It is the first time I encountered a practical need for it, but I don't see one listed in Stroustrup. I intend to write:
// Detect when exactly one of A,B is equal to five.
return (A==5) ^^ (B==5);
But there is no ^^
operator. Can I use the bitwise ^
here and get the right answer (regardless of machine representation of true and false)? I never mix &
and &&
, or |
and ||
, so I hesitate to do that with ^
and ^^
.
I'd be more comfortable writing my own bool XOR(bool,bool)
function instead.
The !=
operator serves this purpose for bool
values.