From: Luca Barbieri <ldb@ldb.ods.org>
Date: 28 Aug 2002 06:10:39 +0200
I'm not saying that it's serious bug, just that using __ffs is more
appropriate than reimplementing it incorrectly and inefficiently.
ffs won't find the smallest power of 2 >= some_arbitrary_value.
That is what this code is doing.
I've personally wasted enough typing on this thread, so enough....
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