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    SubjectRe: Hash functions (was Re: 2.2.6_andrea2.bz2)
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    Andrea Arcangeli <andrea@e-mind.com> writes:

    > On Thu, 6 May 1999, Chuck Lever wrote:
    >
    > >that's one reason why you don't use the LSB of the multiplication result.
    > >instead, it is right-shifted so you get the middle bits, which are much
    > >more likely to be "random."
    >
    > BTW: 2**32*(sqrt(5)-1)/2 is 2654435770 and not 2654425957UL that you are
    > using in your hashfn. So were does 2654425957UL came from?

    It's a nearby prime.

    --
    Harvey J. Stein
    BFM Financial Research
    hjstein@bfr.co.il

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