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From: Hyman Rosen <hyrosen@mail.com>
Subject: Re: New limited range type?
Date: Wed, 12 Nov 2003 10:00:22 -0500
Date: 2003-11-12T10:00:22-05:00	[thread overview]
Message-ID: <1068649222.351052@master.nyc.kbcfp.com> (raw)
In-Reply-To: <jsatob.i6f.ln@skymaster>

Jean-Pierre Rosen wrote:
> Nope.
> Ada does not define "evaluation order", but it does define associativity.
> A+B-C is definitely (A+B) - C

But in floating arithmetic, A + B - C may produce the numerically
correct result even if A + B by itself would overflow. Would this
need to be changed for saturating arithmetic? If A + B would saturate
but A + B - C (in ordinary arithmetic) would not, should the result
be required to be UPPER_LIMIT - C?




  reply	other threads:[~2003-11-12 15:00 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-11-07 15:51 New limited range type? Martin Dowie
2003-11-07 15:57 ` Hyman Rosen
2003-11-07 16:20   ` Martin Dowie
2003-11-07 16:36     ` Stephane Richard
2003-11-07 16:59     ` Hyman Rosen
2003-11-07 18:18       ` Martin Dowie
2003-11-07 20:11         ` Larry Hazel
2003-11-07 22:40           ` Martin Dowie
2003-11-07 23:31             ` Larry Hazel
2003-11-12  8:22       ` Jean-Pierre Rosen
2003-11-12 15:00         ` Hyman Rosen [this message]
2003-11-12 15:34           ` Robert I. Eachus
2003-11-12 17:37             ` tmoran
2003-11-07 18:19   ` Mike Silva
2003-11-07 19:03   ` Marin David Condic
2003-11-07 18:05 ` Mike Silva
2003-11-08 21:58   ` Nick Roberts
2003-11-09 14:34     ` Martin Dowie
2003-11-11  5:13       ` Nick Roberts
2003-11-11 10:18         ` Martin Dowie
2003-11-11 10:35         ` Martin Dowie
2003-11-11 10:41           ` Lutz Donnerhacke
2003-11-11 12:37             ` Marin David Condic
2003-11-11 14:19             ` Martin Dowie
2003-11-11 12:34           ` Marin David Condic
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