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Subject: Re: Do top programs use 64 bit hash signature?

Author: Dann Corbit

Date: 12:11:10 12/13/99

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On December 10, 1999 at 22:08:44, Robert Hyatt wrote:
[snip]
>Not exactly.  Suppose you have exactly 4 billion (2^32) entries.  You can use
>the right-most 32 bits to form the hash probe address, and store the leftmost
>32 bits for verification.  You are using _all_ 64 bits.  But since the right
>most bits are used for the address, there is no use in storing them at that
>address, right?

What a beautiful, general purpose technique!

This could be used for any sort of hash!!!

I will definitely toss this beauty into my bag of tricks.

It rates a double-wow!



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