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Subject: Re: Size of PawnHashTable

Author: J. Wesley Cleveland

Date: 09:50:41 11/08/02

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On November 08, 2002 at 10:50:34, Ron Murawski wrote:

[snip]
>
>I'm investigating power-of-two size vs prime size using single-probes. It's not
>at all apparent to me whether the smaller table used for a power-of-two size
>might slow down the engine more than the expensive mod instruction on a larger
>table would. In other words, if there are 36K slots available, power-of-two
>would only use 32K slots, whereas the prime size would use almost all of the
>36K.

You can use multiply instead of mod, e.g. with 32 bit keys:

table_index = (key*number_of_table_slots) >> 32;





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