From: matthew_heaney@acm.org (Matthew Heaney)
Subject: Re: Renaming Fixed Point Mutiplicative operator in Ada 95
Date: 1998/05/21
Date: 1998-05-21T00:00:00+00:00 [thread overview]
Message-ID: <matthew_heaney-ya023680002105981805050001@news.ni.net> (raw)
In-Reply-To: 3564A1ED.3DAC@gecm.com
In article <3564A1ED.3DAC@gecm.com>, Simon Pilgrim <simon.pilgrim@gecm.com>
wrote:
(start of quote)
It is not sufficient to just check for equality to zero with fixed point
types. If z is small enough then a divide by zero exception will still
be generated by some targets (Intel 486 & Motorola 68k for example).
(end of quote)
Are you taking about a floating point divide or a fixed point divide? They
are very different!
I'm confused by your answer, because a fixed point divide returns universal
fixed. How does one get a divide by zero exception, since 1) we've proven z
is in fact not zero, and 2) the universal fixed result has infinate range?
If you consider that the smallest non-zero value, T'Small, is represented
internally by the value 1, then how does a divide by zero exception occur?
next prev parent reply other threads:[~1998-05-21 0:00 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-05-19 0:00 Renaming Fixed Point Mutiplicative operator in Ada 95 Stuart Hutchesson
1998-05-19 0:00 ` Matthew Heaney
1998-05-20 0:00 ` Robert Dewar
[not found] ` <matthew_heaney-ya023680002005981908570001@news.ni.net>
[not found] ` <01bd84c3$47215d60$440029a1@m00rq900>
1998-05-21 0:00 ` Robert Dewar
1998-05-21 0:00 ` Simon Pilgrim
1998-05-21 0:00 ` Matthew Heaney [this message]
1998-05-22 0:00 ` Robert I. Eachus
1998-05-22 0:00 ` Rod Chapman
1998-05-22 0:00 ` John McCabe
1998-05-22 0:00 ` Stuart Hutchesson
1998-05-22 0:00 ` Matthew Heaney
1998-05-23 0:00 ` Robert Dewar
1998-05-21 0:00 ` Matthew Heaney
1998-05-21 0:00 ` Robert Dewar
1998-05-21 0:00 ` Robert Dewar
1998-05-22 0:00 ` Robert I. Eachus
1998-05-23 0:00 ` Robert Dewar
1998-05-21 0:00 ` John McCabe
1998-05-21 0:00 ` Robert Dewar
1998-05-21 0:00 ` Matthew Heaney
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