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From: "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: Good hash for pointers
Date: Sun, 2 Jun 2024 12:42:51 -0700
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On 6/2/2024 12:45 AM, Michael S wrote:
> On Thu, 30 May 2024 19:27:48 -0700
> Tim Rentsch <tr.17687@z991.linuxsc.com> wrote:
> 
>> Bonita Montero <Bonita.Montero@gmail.com> writes:
>>
>>> Am 26.05.2024 um 19:20 schrieb Tim Rentsch:
>>>   
>>>> I say the output quality is poor because I have run tests that
>>>> show the poor output quality.
>>>
>>> If you chose a prime whose double is beyond 64 bit there's an
>>> equal distribution among the 64 bit modulos.
>>>   
>>>> I've done that with a prime of my own choosing and also with
>>>> 18446744073709551557, the value you suggested.
>>>
>>> Show me your code.
>>
>> Oh get real.  It's not my job to make up for your
>> laziness.
> 
> So, what were your conclusions?
> Ignoring the speed of computation, would something like cryptographic
> hash scaled to bucket size be a best hash for this type of application?
> Or some sort of less thorough grinding of the bits is better?
> 

Use this one... lol! I laugh because its not exactly fast... ;^)

http://fractallife247.com/test/hmac_cipher/ver_0_0_0_1?ct_hmac_cipher=eb1e27ed692b3cc98275fd002178baa0cbfc2e520a749d70ba7b4028b83982f4b42fd9d33a0f03e69b37fdbf3b63853b33c822afdf32f9810bdc542690e1bab726db1b9b9787d50432f521aa424296a83c319f2a299492ff72a9b61ae641f164cdbb864e2f1c047c6767a83c7678a0e30d63c935bb7c3326ffb3203179ee08e406851cb8e572c5005d81900ee87281e0743f3e41e64323776330408d76d6eb0cd569144a81cbbfa9b0a3cb94bfea4e25bfd94ec008b30573a2046178b02b9c855ec98a6eaa507d14fece8064