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Subject: Re: Non power of two hash table sizes

Author: Robert Hyatt

Date: 19:52:35 02/18/02

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On February 18, 2002 at 15:43:09, Alvaro Jose Povoa Cardoso wrote:

>My program uses hash tables witch are a power of two.
>In order to compute the index to an hash table of this kind I simply do:
>  hashindex=(hashkey & hashsize)
>in witch hashsize is a mask with for example the first 12 bits set for a size of
>4096 entries.
>I would like to know how to compute the index to a hash table that can have
>sizes like 1MB, 7MB, 45MB, 49MB, 50MB, ..etc
>Could someone please explain how to do this?
>
>Thank you,
>Alvaro Cardoso


index = signature % hash_size

• Re: Non power of two hash table sizes Bernhard Bauer 23:36:32 02/18/02
  • Re: Non power of two hash table sizes Robert Hyatt 07:48:25 02/19/02
    • Re: Non power of two hash table sizes J. Wesley Cleveland 14:45:47 02/19/02
      • Re: Non power of two hash table sizes Robert Hyatt 20:15:05 02/19/02
    • Re: Non power of two hash table sizes Gian-Carlo Pascutto 08:07:29 02/19/02
      • Re: Non power of two hash table sizes Eugene Nalimov 22:14:12 02/19/02
        • Re: Non power of two hash table sizes Dieter Buerssner 04:26:25 02/20/02
          • Re: Non power of two hash table sizes Robert Hyatt 08:25:02 02/21/02
      • Re: Non power of two hash table sizes Robert Hyatt 11:01:28 02/19/02

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