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From: "Nick Roberts" <Nick.Roberts@dial.pipex.com>
Subject: Re: Papers on the Ariane-5 crash and Design by Contract
Date: 1997/03/25
Date: 1997-03-25T00:00:00+00:00	[thread overview]
Message-ID: <01bc38b5$93e00760$57f882c1@xhv46.dial.pipex.com> (raw)
In-Reply-To: 97032020033927@psavax.pwfl.com



Marin David Condic, 561.796.8997, M/S 731-93 <condicma@PWFL.COM> wrote in
article <97032020033927@psavax.pwfl.com>...
>     As for overflow situations - you're right that the use of floating
>     point usually means more than enough resolution so you never see
>     it overflow. It might have saved the Ariane. What might also have
>     saved them would be if the arithmetic on the machine had saturated
>     instead of causing an interrupt. (Disable the interrupt & let the
>     hardware saturate or enable the interrupt & put your own
>     saturation software in there.) Floating point usually saturates
>     the way you want it to from hardware, but fixed usually doesn't.
> 

I would be very grateful if you (or someone) would explain the term
'saturation' in this context. I'm not accusing you of incorrect usage of a
technical term, merely myself of ignorance. I would be very interested. 

Nick.





  reply	other threads:[~1997-03-25  0:00 UTC|newest]

Thread overview: 182+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1997-03-20  0:00 Papers on the Ariane-5 crash and Design by Contract Marin David Condic, 561.796.8997, M/S 731-93
1997-03-25  0:00 ` Nick Roberts [this message]
  -- strict thread matches above, loose matches on Subject: below --
1997-04-03  0:00 Adrian B.Y. Hoe
1997-04-05  0:00 ` Nick Roberts
1997-03-27  0:00 Marin David Condic, 561.796.8997, M/S 731-93
1997-03-24  0:00 Marin David Condic, 561.796.8997, M/S 731-93
1997-03-17  0:00 Marin David Condic, 561.796.8997, M/S 731-93
1997-03-15  0:00 Bertrand Meyer
     [not found] ` <tz8ohcjv7cc.fsf@aimnet.com>
1997-03-16  0:00   ` Robert Dewar
1997-03-17  0:00   ` Paul Johnson
1997-03-17  0:00     ` Enrico Facchin - Sartori E.T.
1997-03-19  0:00       ` Anders Pytte
1997-03-18  0:00     ` Ken Garlington
1997-03-17  0:00   ` Robert I. Eachus
1997-03-17  0:00     ` Martin Tom Brown
1997-03-17  0:00   ` Nick Leaton
1997-03-17  0:00     ` Richard Kaiser
1997-03-18  0:00     ` Richard Kaiser
1997-03-18  0:00       ` Jean-Marc Jezequel
1997-03-19  0:00         ` Ken Garlington
1997-03-18  0:00       ` Nick Leaton
1997-03-19  0:00         ` Richard Kaiser
1997-03-19  0:00           ` Fergus Henderson
1997-03-19  0:00           ` Jean-Marc Jezequel
1997-03-19  0:00             ` Richard Kaiser
1997-03-18  0:00     ` Richard Kaiser
1997-03-18  0:00       ` Nick Leaton
1997-03-18  0:00         ` "Paul E. Bennett"
1997-03-19  0:00           ` Nick Leaton
1997-03-24  0:00           ` Joachim Durchholz
1997-03-25  0:00             ` Robert Dewar
1997-03-31  0:00               ` Joachim Durchholz
1997-04-02  0:00                 ` Robert Dewar
1997-04-03  0:00                   ` Martin Tom Brown
1997-04-04  0:00                   ` Jonathan Egre'
1997-04-06  0:00                     ` Robert Dewar
1997-04-06  0:00                       ` Nick Roberts
1997-04-04  0:00                   ` Derek Clarke
1997-03-31  0:00               ` Jan Galkowski
1997-03-31  0:00             ` Alexander Anderson
1997-04-01  0:00             ` Alexander Anderson
1997-04-02  0:00             ` Ken Garlington
1997-03-20  0:00         ` John the Hamster
     [not found]     ` <tz8g1xtzx9y.fsf@aimnet.com>
1997-03-18  0:00       ` Anders Pytte
1997-03-18  0:00         ` Laurent Moussault
1997-03-18  0:00         ` Jean-Marc Jezequel
1997-03-18  0:00           ` Anders Pytte
1997-03-18  0:00           ` Anders Pytte
1997-03-20  0:00             ` Matt Kennel (Remove 'nospam' to reply)
1997-03-24  0:00             ` Joachim Durchholz
1997-03-24  0:00               ` Anders Pytte
1997-03-26  0:00                 ` Matt Kennel (Remove 'nospam' to reply)
1997-03-29  0:00                   ` Anders Pytte
1997-03-29  0:00                     ` Steve Furlong
1997-03-26  0:00                 ` Robert Dewar
1997-03-27  0:00                   ` the one and only real true kibo
1997-03-29  0:00                   ` the one and only real true kibo
1997-03-29  0:00                     ` Nick S Bensema
1997-03-30  0:00                       ` the one and only real true kibo
1997-03-21  0:00           ` Ken Garlington
1997-03-21  0:00             ` Bertrand Meyer
1997-03-21  0:00               ` William Clodius
1997-03-21  0:00                 ` Bertrand Meyer
1997-03-23  0:00                   ` the one and only real true kibo
1997-03-23  0:00                   ` William Clodius
1997-03-22  0:00               ` Fergus Henderson
1997-03-22  0:00                 ` Bertrand Meyer
1997-03-23  0:00                   ` the one and only real true kibo
1997-03-23  0:00                     ` Anders Pytte
1997-03-23  0:00               ` Anders Pytte
     [not found]                 ` <3335BC24.13728473@eiffel.com>
1997-03-23  0:00                   ` Bertrand Meyer
1997-03-24  0:00                     ` Robert Dewar
1997-03-31  0:00                       ` Ken Garlington
1997-04-01  0:00                         ` Bertrand Meyer
1997-03-25  0:00                     ` Ken Garlington
1997-03-24  0:00                 ` the one and only real true kibo
1997-03-24  0:00                 ` Ken Garlington
1997-03-24  0:00               ` John Hogg
1997-03-24  0:00               ` Ken Garlington
1997-03-26  0:00                 ` Robert Dewar
1997-03-26  0:00                   ` Ken Garlington
     [not found]                     ` <E7ox17.MKx@syd.csa.com.au>
1997-03-28  0:00                       ` Ken Garlington
1997-03-17  0:00   ` Alexander Anderson
1997-03-17  0:00   ` John McCabe
     [not found]     ` <tz8n2s1hrdc.fsf@aimnet.com>
1997-03-20  0:00       ` John McCabe
1997-03-20  0:00       ` John McCabe
1997-03-20  0:00         ` Jean-Marc Jezequel
1997-03-20  0:00           ` John McCabe
1997-03-21  0:00             ` Niall Cooling
1997-03-21  0:00               ` Gavin Collings
1997-03-27  0:00                 ` Joachim Durchholz
1997-04-03  0:00                   ` Gavin Collings
1997-04-03  0:00                     ` Ken Garlington
1997-04-04  0:00                       ` Derek Clarke
1997-04-04  0:00                     ` Derek Clarke
1997-04-06  0:00                       ` Robert Dewar
1997-04-07  0:00                         ` Ken Garlington
1997-04-09  0:00                           ` Gavin Collings
1997-04-03  0:00                   ` Robert I. Eachus
1997-04-04  0:00                     ` Chris Beer
1997-04-04  0:00                     ` Derek Clarke
1997-04-04  0:00                   ` Ken Garlington
1997-04-04  0:00                     ` Robert Dewar
1997-04-03  0:00                 ` Robin Rosenberg
1997-03-24  0:00             ` Ken Garlington
1997-03-26  0:00           ` Thomas Beale
1997-03-26  0:00             ` Ken Garlington
1997-03-21  0:00       ` "Paul E. Bennett"
1997-03-22  0:00     ` Nigel Tzeng
1997-03-23  0:00       ` John McCabe
1997-03-17  0:00   ` Bertrand Meyer
1997-03-18  0:00     ` John McCabe
1997-03-18  0:00       ` Ray McVay
1997-03-27  0:00         ` Robert Dewar
1997-03-29  0:00           ` the one and only real true kibo
1997-03-30  0:00             ` Nick Roberts
1997-04-06  0:00             ` Doctorb
1997-04-08  0:00         ` Ron Crocker
1997-04-11  0:00           ` Richard Riehle
1997-03-18  0:00   ` Jon S Anthony
1997-03-18  0:00   ` Jon S Anthony
1997-03-18  0:00   ` Ulrich Windl
1997-03-18  0:00   ` Ken Garlington
1997-03-19  0:00     ` Eric M. Boyd
1997-03-19  0:00       ` Jeffrey W. Stulin
1997-03-18  0:00   ` Robert I. Eachus
1997-03-18  0:00   ` Tarjei Jensen
1997-03-18  0:00   ` Jon S Anthony
1997-03-18  0:00   ` Jon S Anthony
1997-03-19  0:00     ` Ron Forrester
1997-03-21  0:00       ` Ken Garlington
1997-03-22  0:00         ` Ron Forrester
1997-03-19  0:00   ` Nick Leaton
1997-03-19  0:00   ` Jon S Anthony
1997-03-20  0:00     ` Jean-Marc Jezequel
1997-03-24  0:00       ` Ken Garlington
1997-03-20  0:00     ` Paul Johnson
1997-03-24  0:00       ` Ken Garlington
1997-03-19  0:00   ` Ken Garlington
1997-03-19  0:00   ` Ken Garlington
1997-03-20  0:00     ` Martin Tom Brown
1997-03-21  0:00       ` Frank Manning
1997-03-21  0:00         ` Martin Tom Brown
1997-03-23  0:00           ` Frank Manning
1997-03-25  0:00             ` Ken Garlington
1997-03-20  0:00     ` Richard Kaiser
1997-03-24  0:00       ` Ken Garlington
1997-03-19  0:00   ` Jon S Anthony
1997-03-19  0:00   ` Karel Th�nissen
1997-03-19  0:00   ` Karel Th�nissen
1997-03-20  0:00   ` Robert I. Eachus
1997-03-20  0:00   ` Robert I. Eachus
1997-03-21  0:00   ` Alexander Anderson
1997-03-23  0:00     ` "Paul E. Bennett"
1997-03-21  0:00   ` Ulrich Windl
     [not found]   ` <tz8sp1qiywm.fsf@aimnet.com>
1997-03-21  0:00     ` ae59
1997-03-22  0:00   ` Bertrand Meyer
1997-03-23  0:00     ` Dale Stanbrough
1997-03-24  0:00     ` Robert Dewar
1997-03-22  0:00   ` Bertrand Meyer
1997-03-22  0:00     ` Anders Pytte
1997-03-23  0:00       ` Steve Furlong
1997-03-24  0:00         ` Anders Pytte
1997-03-22  0:00   ` Jon S Anthony
1997-03-28  0:00     ` Matt Kennel (Remove 'nospam' to reply)
1997-03-24  0:00   ` Ken Garlington
1997-03-24  0:00   ` Robb Nebbe
1997-03-24  0:00   ` Jon S Anthony
1997-03-24  0:00   ` Ken Garlington
1997-03-24  0:00   ` Alexander Anderson
1997-03-24  0:00   ` Ken Garlington
1997-03-27  0:00     ` Joachim Durchholz
1997-03-31  0:00       ` Ken Garlington
1997-04-06  0:00         ` Joachim Durchholz
1997-03-25  0:00   ` Robert I. Eachus
1997-03-26  0:00   ` Jon S Anthony
1997-03-26  0:00   ` Ken Garlington
1997-03-26  0:00   ` Alexander Anderson
1997-03-28  0:00   ` Jon S Anthony
1997-03-31  0:00   ` Ken Garlington
1997-03-19  0:00 ` Chris Brand
1997-03-23  0:00 ` the one and only real true kibo
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