From: jvl@ocsystems.com (Joel VanLaven)
Subject: Re: floating point problem
Date: 1997/03/12
Date: 1997-03-12T00:00:00+00:00 [thread overview]
Message-ID: <1997Mar12.204120.18686@ocsystems.com> (raw)
In-Reply-To: dewar.858142750@merv
Robert Dewar (dewar@merv.cs.nyu.edu) wrote:
: Larry asks
: <<So can anyone give an example for the Intel-challenged regarding how
: one would easily detect this float-challenged hardware at runtime in
: order to issue a nastygram ?>>
: The proper code is a little delicate, but is documented in the relevant
: Intel microprocessor manuals. Note that all DX chips, and of course all
: Pentiums have built-in floating-point, so this is really only a concern
: with ancient machines that you cannot purchase any longer.
Ouch. Actually all intel 486DX chips have a math co-processor however
386DX chips and 486SX chips do not. I wouldn't call computers a few
years old ancient just yet. A 286 you might be justified calling ancient
but even that seems to be stretching it. Also, corret me if I am wrong
but isn't floating point support provided by software emulation on such
machines? It may be that your problem isn't. I'd go find a machine that
doesn't have floating point to try your program on just to be sure that
there is a problem at all.
--
-- Joel VanLaven
next prev parent reply other threads:[~1997-03-12 0:00 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-02-26 0:00 floating point problem bill
1997-03-02 0:00 ` Corbin Dunn
1997-03-02 0:00 ` tmel
1997-03-02 0:00 ` Robert Dewar
1997-03-03 0:00 ` Kenneth W. Sodemann
1997-03-04 0:00 ` Robert Dewar
1997-03-05 0:00 ` Larry Kilgallen
1997-03-05 0:00 ` Robert Dewar
1997-03-06 0:00 ` Larry Kilgallen
1997-03-09 0:00 ` Robert Dewar
1997-03-10 0:00 ` Fergus Henderson
1997-03-10 0:00 ` Robert Dewar
1997-03-10 0:00 ` Larry Kilgallen
1997-03-12 0:00 ` Robert Dewar
1997-03-12 0:00 ` Larry Kilgallen
1997-03-13 0:00 ` Robert Dewar
1997-03-14 0:00 ` Larry Kilgallen
1997-03-15 0:00 ` Robert Dewar
1997-03-12 0:00 ` Joel VanLaven [this message]
1997-03-12 0:00 ` Robert Dewar
1997-03-13 0:00 ` Kenneth W. Sodemann
1997-03-15 0:00 ` Robert Dewar
1997-03-16 0:00 ` Larry Kilgallen
1997-03-06 0:00 ` Geert Bosch
1997-03-06 0:00 ` Fergus Henderson
1997-03-06 0:00 ` Scott Ingram
1997-03-06 0:00 ` Robert Dewar
1997-03-17 0:00 ` Tom Moran
1997-03-17 0:00 ` Robert I. Eachus
1997-03-17 0:00 ` Robert Dewar
1997-03-18 0:00 ` Robert I. Eachus
-- strict thread matches above, loose matches on Subject: below --
1997-03-27 0:00 Floating " Kees de Lezenne Coulande
1997-03-28 0:00 ` J-P. Rosen
1997-03-28 0:00 ` Robert Dewar
1997-03-28 0:00 ` Robert Dewar
1997-03-28 0:00 ` Larry Kilgallen
1997-03-28 0:00 ` Robert Dewar
1997-03-29 0:00 ` Tom Moran
1997-03-30 0:00 ` Larry Kilgallen
1997-03-31 0:00 ` Robert Dewar
1997-04-01 0:00 ` Larry Kilgallen
1997-04-01 0:00 ` Tom Moran
1997-04-02 0:00 ` Larry Kilgallen
1997-04-02 0:00 ` Robert Dewar
1997-04-03 0:00 ` Jerry van Dijk
1997-04-03 0:00 ` Jerry van Dijk
1997-04-03 0:00 ` Jerry van Dijk
1997-04-02 0:00 ` Robert Dewar
1997-03-31 0:00 ` Robert Dewar
1997-03-31 0:00 ` Tom Moran
1997-03-31 0:00 ` Robert Dewar
1997-03-28 0:00 ` Tom Moran
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