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Lowlevel optimizations in the Ptset module, replace some function
author
Kim Nguyễn
<kn@lri.fr>
Sat, 27 Jul 2013 14:32:26 +0000
(16:32 +0200)
committer
Kim Nguyễn
<kn@lri.fr>
Sat, 27 Jul 2013 14:32:26 +0000
(16:32 +0200)
calls by a field access, use bit twidling hack to compute the
largest power of two inferior to a given value (was previously done
with log(WORDSIZE * 8) branching + table lookup).
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