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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Newsgroups: comp.lang.ada
Subject: Re: Efficiency of code generated by Ada compilers
Date: Mon, 09 Aug 2010 17:42:27 -0400
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Date: 2010-08-09T17:42:27-04:00
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"Yannick Duch�ne (Hibou57)" <yannick_duchene@yahoo.fr> writes:

> Le Mon, 09 Aug 2010 15:28:02 +0200, Robert A Duff
> <bobduff@shell01.theworld.com> a �crit:
>>> Hmmm... Hash coded tables?
>>
>> Signed integers work fine for that.  Except when you need
>> that one extra bit -- that's the problem.
>
> All of the hash functions I have seen so far use modular types. Do you
> known ones computing on integers ?

Modular types are integer types in Ada terms.  So that should be
"...computing on SIGNED integers".  Sorry for nitpicking.  ;-)

Well, all the ones I wrote in Ada 83, or Pascal, or... used
signed integers.

But I concede the point -- modular types are appropriate for
hash functions.

- Bob