From: "Stuart" <stuart@0.0>
Subject: Re: Ranges and (non)static constraints
Date: Fri, 17 Nov 2006 13:30:34 -0000
Date: 2006-11-17T13:30:34+00:00 [thread overview]
Message-ID: <455db67b_1@glkas0286.greenlnk.net> (raw)
In-Reply-To: 1msd2xaahtsgv.f8io255x4f0n$.dlg@40tude.net
"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message
news:1msd2xaahtsgv.f8io255x4f0n$.dlg@40tude.net...
> These are sufficiently different. Consider this example:
>
> N : constant := 2**64; -- Legal in GNAT
> type T is range 1..N; -- Illegal in GNAT
>
> (This is not a bug)
>
> I would at least require the second be legal when the first is.
Why? The first is a named value declaration (rather than a constant object
declaration). In the type declaration I think the semantics of Ada require
that the base type be a signed type, which thus introduces issues of
symmetry around zero.
Unfortunately I am in a bit of a rush at the moment so I don't have a chance
to test an idea like:
type T is mod N range 1..N-1;
Regards
--
Stuart
next prev parent reply other threads:[~2006-11-17 13:30 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-16 11:02 Ranges and (non)static constraints Maciej Sobczak
2006-11-16 12:23 ` Martin Krischik
2006-11-16 13:23 ` Maciej Sobczak
2006-11-16 19:01 ` Jeffrey R. Carter
2006-11-18 0:02 ` Robert A Duff
2006-11-16 13:13 ` Dmitry A. Kazakov
2006-11-16 17:18 ` Jean-Pierre Rosen
2006-11-17 9:08 ` Dmitry A. Kazakov
2006-11-17 10:30 ` Stuart
2006-11-17 10:37 ` Jean-Pierre Rosen
2006-11-17 14:57 ` Dmitry A. Kazakov
2006-11-17 16:04 ` Jean-Pierre Rosen
2006-11-18 9:51 ` Dmitry A. Kazakov
2006-11-18 14:17 ` Stephen Leake
2006-11-17 20:05 ` Jeffrey R. Carter
2006-11-17 23:58 ` Robert A Duff
2006-11-18 9:47 ` Dmitry A. Kazakov
2006-11-19 2:27 ` Jeffrey R. Carter
2006-11-19 12:13 ` Björn Persson
2006-11-19 22:51 ` Robert A Duff
2006-11-20 3:51 ` Jeffrey R. Carter
2006-11-21 21:02 ` Robert A Duff
2006-11-20 17:35 ` Adam Beneschan
2006-11-17 15:45 ` Maciej Sobczak
2006-11-17 16:45 ` Jean-Pierre Rosen
2006-11-17 10:39 ` AW: " Grein, Christoph (Fa. ESG)
2006-11-17 11:20 ` Dmitry A. Kazakov
2006-11-17 13:30 ` Stuart [this message]
2006-11-17 15:07 ` Dmitry A. Kazakov
2006-11-17 16:47 ` Jean-Pierre Rosen
2006-11-20 14:08 ` Stuart
2006-11-20 14:12 ` Stuart
2006-11-20 15:48 ` Dmitry A. Kazakov
2006-11-16 18:56 ` Jeffrey R. Carter
2006-11-16 20:00 ` Adam Beneschan
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox