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From: Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups: comp.lang.c
Subject: Re: Good hash for pointers
Date: Thu, 23 May 2024 18:39:56 -0700
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Malcolm McLean <malcolm.arthur.mclean@gmail.com> writes:

> On 24/05/2024 00:52, Tim Rentsch wrote:
>
>> Malcolm McLean <malcolm.arthur.mclean@gmail.com> writes:
>>
>>> On 23/05/2024 23:49, Tim Rentsch wrote:
>>>
>>>> Malcolm McLean <malcolm.arthur.mclean@gmail.com> writes:
>>>>
>>>>> What is a good hash function for pointers to use in portable
>>>>> ANSI C?
>>>>
>>>> I have a preliminary question.  Do you really mean ANSI C, or
>>>> is C99 acceptable?
>>>
>>> C89 is better.
>>> But the pass has been sold.
>>
>> I'm not asking which you think is better.  I'm asking about
>> what your requirements are.
>
> C 89.
> I don't want to pull in C99 types and so on just for a hash function.

In that case I think you are stuck with using a half-baked
solution.  The standard integer types available in C89 just
aren't a good fit in a 64-bit world.