the logical xor operator!
Maarten Litmaath
maart at cs.vu.nl
Fri Jun 24 07:48:38 AEST 1988
Hello, it's me again.
This time the question is: why hasn't C got a logical xor operator?
logical and: &&
logical or: ||
logical xor: ^^ <- fits nicely!
Of course the way to come around the deficiency is:
if (!(expr1) != !(expr2)) {
...
}
but this only works if !0 always evaluates to the same value (viz. 1), that is,
the optimizer is not allowed to f*ck around with the comparison.
!0 is indeed a constant, isn't it?
--
I'd rather live in Russia |Maarten Litmaath @ Free U Amsterdam:
than in South-Africa... |maart at cs.vu.nl, mcvax!botter!ark!maart
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