From: "Corey Ashford" <corSPAMey@rational.com>
Subject: Re: ObjectAda - no clock drift!
Date: 1998/06/17
Date: 1998-06-17T00:00:00+00:00 [thread overview]
Message-ID: <6m7r5m$4gn$1@usenet.rational.com> (raw)
In-Reply-To: 6m6f0t$1ue$1@nnrp1.dejanews.com
dennison@telepath.com wrote in message <6m6f0t$1ue$1@nnrp1.dejanews.com>...
>Apparently, Aonix has made atomic clocks obsolete with the simple use of a
>Wintel PC.
>
>The Ada rm in D.8 paragraph 41-43 requires vendors to give "an upper bound
on
>the drift rate of Clock with respect to real time." I was curious what my
>Aonix ObjectAda compiler said, so I looked it up.
>
>The documentation Requirements section of the ObjectAda 7.1 NT docs (p 2-9)
>has the following statement: There is no software clock drift.
>
>What is meant by this? Surely not what I think it's saying!
I think it's saying that the way the software is written, it will not cause
the current
time to drift as a side-effect of the way it keeps time the way some
algorithms do. However, if the hardware clock drifts, it has no control
over that.
- Corey
next prev parent reply other threads:[~1998-06-17 0:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <6m6f0t$1ue$1@nnrp1.dejanews.com>
1998-06-17 0:00 ` ObjectAda - no clock drift! Christopher Green
1998-06-17 0:00 ` Corey Ashford [this message]
1998-06-17 0:00 ` dennison
1998-06-17 0:00 ` Robert A Duff
1998-06-18 0:00 ` dennison
1998-06-18 0:00 ` Larry Kilgallen
1998-06-18 0:00 ` tedennison
1998-06-17 0:00 ` Larry Kilgallen
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