using '&', '|','!' and others with bits, the manual tells us how. but not how compare them
see these consts:
imagine that 'a' have RANDOM and IMMEDIATE. how can i test it?Code:const int RANDOM=1; const int IMMEDIATE=2; const int SEARCH=3; int a;
(maybe these consts values aren't correct, but these is for i understand how can i compare several values with bit flags)
First of all, SEARCH is 3, which means it's a combination of RANDOM and IMMEDIATE -- SEARCH == RANDOM | IMMEDIATE. Is that intended?
To test if a flag is set, just use (variable & FLAG):
Code:if (flags & RANDOM) { // it's random }
Code://try //{ if (a) do { f( b); } while(1); else do { f(!b); } while(1); //}
Also, you have to test for each bit individually - (a & RANDOM) or (a & IMMEDIATE)
So you could not use (a & SEARCH). It would be TRUE if any or all of those bits were set.
To test for SEARCH, you could use (a & SEARCH == SEARCH).
Some predefined flags in the windows API are combinations of other flags.
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