From: eachus@spectre.mitre.org (Robert I. Eachus)
Subject: Re: Size code Ada and C
Date: 1998/07/07
Date: 1998-07-07T00:00:00+00:00 [thread overview]
Message-ID: <EACHUS.98Jul7145000@spectre.mitre.org> (raw)
In-Reply-To: dewar.899298821@merv
In article <dewar.899298821@merv> dewar@merv.cs.nyu.edu (Robert Dewar) writes:
> I am puzzled, I thought the problem derived from a constaint error
> that was raised by a fixed point operation ...
There was a floating to fixed/integer conversion instruction in
hardware, that signaled a fault because the operand was out of range.
This could have been handled by a local (Ada) exception handler.
However, the decision was made that this situation could only occur
(in the Arianne 4) in the case of a hardware failure. So the
exception was allowed to propagate to an outermost handler that
switched control to the backup and dumped state.
--
Robert I. Eachus
with Standard_Disclaimer;
use Standard_Disclaimer;
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next prev parent reply other threads:[~1998-07-07 0:00 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <35921271.E51E36DF@aonix.fr>
[not found] ` <3598358A.73FF35CC@pipeline.com>
[not found] ` <dewar.899298949@merv>
1998-07-03 0:00 ` Performance Ada and C, was Re: Size code Ada and C Van Snyder
1998-07-03 0:00 ` Performance " Markus Kuhn
1998-07-03 0:00 ` Robert Dewar
1998-07-03 0:00 ` Markus Kuhn
1998-07-04 0:00 ` ak
1998-07-07 0:00 ` Frank Klemm
1998-07-13 0:00 ` Daren Scot Wilson
[not found] ` <m3zpf1tyr8.fsf@zaphod.enst.fr>
[not found] ` <6mtiv0$9j3@gcsin3.geccs.gecm.com>
[not found] ` <dewar.898962846@merv>
[not found] ` <6n8393$hoi$2@platane.wanadoo.fr>
[not found] ` <6n84im$79q@gcsin3.geccs.gecm.com>
[not found] ` <m3u35470ds.fsf@zaphod.enst.fr>
[not found] ` <6n8b7u$9hm@gcsin3.geccs.gecm.com>
[not found] ` <m3vhpk5f0d.fsf@zaphod.enst.fr>
[not found] ` <3597db2d.1017430@news.demon.co.uk>
[not found] ` <EACHUS.98Jun30173656@spectre.mitre.org>
1998-07-03 0:00 ` Size code " John McCabe
1998-07-03 0:00 ` Larry Elmore
1998-07-03 0:00 ` John McCabe
1998-07-07 0:00 ` Robert I. Eachus
[not found] ` <dewar.899298821@merv>
1998-07-07 0:00 ` Robert I. Eachus [this message]
[not found] ` <6n7jut$al0$1@nnrp1.dejanews.com>
[not found] ` <6navqt$shc$1@goanna.cs.rmit.edu.au>
[not found] ` <359A53E2.41C6@lanl.gov>
[not found] ` <dewar.899334821@merv>
[not found] ` <6nfp0v$dgl@gcsin3.geccs.gecm.com>
1998-07-02 0:00 ` Ariane 5 failure (Was: Size code Ada and C) Jean-Pierre Rosen
1998-07-03 0:00 ` robin
1998-07-02 0:00 ` William Clodius
1998-07-09 0:00 ` Plenty of unnecessary contraint tests " Frank Klemm
1998-07-09 0:00 ` Robert Dewar
1998-07-10 0:00 ` Frank Klemm
1998-07-10 0:00 ` Robert S. White
1998-07-10 0:00 ` Ariane 5 failure " Dale Stanbrough
1998-07-10 0:00 ` John McCabe
1998-07-10 0:00 ` Pat Rogers
1998-07-10 0:00 ` Frank Klemm
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