From: Simon Wright <simon@pushface.org>
Subject: Re: Division by zero
Date: Sun, 12 Jun 2005 18:38:15 +0100
Date: 2005-06-12T18:38:15+01:00 [thread overview]
Message-ID: <m2aclv1nnc.fsf@grendel.local> (raw)
In-Reply-To: 5sana1pm436l6vboifijqblu0irf84afkr@4ax.com
Dennis Lee Bieber <wlfraed@ix.netcom.com> writes:
> On Sun, 12 Jun 2005 15:04:17 +1200, "Lurker" <nowhere@nothing.com>
> declaimed the following in comp.lang.ada:
>
>
>>
>> It was. My question was - should it have been caught
>> at compile time instead?
>>
> Possibly not... Isn't 0/0 allowed in IEEE -> giving one of those
> strange NaN type results...
These are integers, though, and GNAT catches integer divide-by-zero.
For floats, you can either check 'Valid (Infs and NaNs aren't) or use
a constrained subtype:
type My_Float is Float range Float'First .. Float'Last;
which will give you the constraint error you'd expect when you assign
an invalid result to it. Well, come to think I didn't try with NaN ...
next prev parent reply other threads:[~2005-06-12 17:38 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-11 21:03 Division by zero Lurker
2005-06-12 2:00 ` David C. Hoos, Sr.
2005-06-12 3:04 ` Lurker
2005-06-12 8:39 ` Dmitry A. Kazakov
2005-06-12 9:43 ` Lurker
2005-06-12 10:36 ` Marius Amado Alves
2005-06-12 11:53 ` Dmitry A. Kazakov
2005-06-13 8:03 ` Ole-Hjalmar Kristensen
2005-06-12 13:10 ` Robert A Duff
2005-06-12 16:55 ` Jeffrey Carter
2005-06-13 3:22 ` Keith Thompson
2005-06-14 2:14 ` Jeffrey Carter
2005-06-13 8:47 ` Lurker
2005-06-14 2:19 ` Jeffrey Carter
2005-06-14 8:35 ` Keith Thompson
2005-06-13 12:19 ` Robert A Duff
2005-06-14 2:31 ` Jeffrey Carter
2005-06-14 8:21 ` Lurker
2005-06-14 20:22 ` Randy Brukardt
2005-06-28 21:22 ` Robert A Duff
2005-06-29 5:50 ` Lurker
2005-06-29 13:27 ` Robert A Duff
2005-06-29 13:54 ` Dmitry A. Kazakov
2005-06-29 16:03 ` Robert A Duff
2005-06-30 1:19 ` Lurker
2005-06-30 11:16 ` Stuart Palin
2005-06-29 13:50 ` Dmitry A. Kazakov
2005-06-29 16:07 ` Robert A Duff
2005-06-30 8:27 ` Dmitry A. Kazakov
2005-06-29 9:20 ` Lurker
2005-06-29 9:49 ` Christoph Grein
2005-06-29 10:40 ` Lurker
2005-06-29 11:04 ` Jeff Creem
2005-06-29 12:28 ` Martin Dowie
2005-06-29 13:40 ` Robert A Duff
[not found] ` <5sana1pm436l6vboifijqblu0irf84afkr@4ax.com>
2005-06-12 17:38 ` Simon Wright [this message]
2005-06-12 12:21 ` Robert A Duff
2005-06-12 22:53 ` Georg Bauhaus
2005-06-13 8:34 ` Lurker
2005-06-13 8:54 ` Marius Amado Alves
2005-06-13 17:59 ` Simon Wright
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