From: Duncan Sands <baldrick@free.fr>
To: comp.lang.ada@ada-france.org
Cc: Matthew Heaney <mheaney@on2.com>
Subject: Re: Hashing on System.Address
Date: Tue, 14 Jun 2005 09:18:31 +0200
Date: 2005-06-14T09:18:31+02:00 [thread overview]
Message-ID: <mailman.21.1118733532.17633.comp.lang.ada@ada-france.org> (raw)
In-Reply-To: <1118699859.296241.40700@g44g2000cwa.googlegroups.com>
Hi Matthew,
> Use System.Storage_Elements.To_Integer to convert the address to an
> Integer_Address, and then convert that to type Hash_Type.
that's what I'm doing. But there's no guarantee that they have the
same size, so it's not portable. It's easy enough to thunk Integer_Address
to a modular type (which I'll also call Integer_Address here). If
Integer_Address is smaller than or equal to Hash_Type then there's no
problem. If it's larger then you can do some bit rotation, but it's surprisingly
awkward to do when you don't know the sizes in advance. I was hoping
someone knew how to do this in a clean way.
All the best,
Duncan.
next prev parent reply other threads:[~2005-06-14 7:18 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-13 20:18 Hashing on System.Address Duncan Sands
2005-06-13 21:31 ` Mark Lorenzen
2005-06-14 7:23 ` Duncan Sands
2005-06-14 20:18 ` Randy Brukardt
2005-06-15 7:27 ` Duncan Sands
2005-06-13 21:57 ` Matthew Heaney
2005-06-13 23:41 ` Robert A Duff
2005-06-14 2:22 ` Matthew Heaney
2005-06-14 7:27 ` Duncan Sands
2005-06-14 8:52 ` Alex R. Mosteo
2005-06-14 9:06 ` Duncan Sands
2005-06-14 9:09 ` Duncan Sands
2005-06-14 17:00 ` Pascal Obry
2005-06-14 20:03 ` Randy Brukardt
2005-06-14 23:20 ` Robert A Duff
2005-06-15 7:13 ` Duncan Sands
2005-06-14 8:44 ` Larry Kilgallen
2005-06-14 10:03 ` Marius Amado Alves
[not found] ` <abb2a2c53e3708803aa68bb87834b7bc@netcabo.pt>
2005-06-14 10:14 ` Duncan Sands
[not found] ` <200506141214.14213.baldrick@free.fr>
2005-06-14 10:29 ` Marius Amado Alves
[not found] ` <64f19b6707e4d19f5362900bbfb80b76@netcabo.pt>
2005-06-14 10:49 ` Marius Amado Alves
2005-06-14 8:42 ` Larry Kilgallen
2005-06-14 11:18 ` Duncan Sands
2005-06-14 7:18 ` Duncan Sands [this message]
2005-06-14 15:18 ` Matthew Heaney
2005-06-14 16:22 ` Duncan Sands
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