Martijn van Oosterhout wrote:
On Sun, Dec 04, 2005 at 02:09:53PM +0300, Anton Nikiforov wrote:Sorry for my stupidity but, maybe there is a function that converts mask stored in int format to a numer of bits? ;) Your function easyly convert this mask to dot decimal notation, but how to count the number of 1 in it?No, but you can write one the same way like so: Let i be your input. Calculate t = -i. If i is in the right format, t will have exactly one bit set. Test this with t <> 0 and (t & i) == t If that's ok, then your answer is 32 - log2(t) Have a nice day,
Sorry, did not quite catch. t in this case is int, and there is no log2(int) function..... Best regards, Anton
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