From: "Jakob Østergaard" <jakob@unthought.net>
To: Jesse Pollard <pollard@tomcat.admin.navo.hpc.mil>
Cc: Nikita@Namesys.COM, Andrey Ulanov <drey@rt.mipt.ru>,
linux-kernel@vger.kernel.org
Subject: Re: FPU, i386
Date: Thu, 18 Apr 2002 10:31:07 +0200 [thread overview]
Message-ID: <20020418103107.B28396@unthought.net> (raw)
In-Reply-To: <200204171440.JAA76065@tomcat.admin.navo.hpc.mil>
On Wed, Apr 17, 2002 at 09:40:48AM -0500, Jesse Pollard wrote:
...
> Been there done that... My solution (based on the problem I was working
> in) was to multiply both sides by the 10^<number of siginificant digits
> of the problem set>. Taking the simplistic approach:
>
> if (int(1/h * 100) == int(5.0 * 100))
The common solution I've seen and used is
if (fabs(a-b) < e)
Set e according to your needs (1E-4 is good enough for many practical purposes,
1E-12 is better for my personal gut-feeling in many problems, 1E-16 and beyond
does not make any sense what so ever (for double precision))
--
................................................................
: jakob@unthought.net : And I see the elder races, :
:.........................: putrid forms of man :
: Jakob Østergaard : See him rise and claim the earth, :
: OZ9ABN : his downfall is at hand. :
:.........................:............{Konkhra}...............:
next prev parent reply other threads:[~2002-04-18 8:31 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-17 14:40 FPU, i386 Jesse Pollard
2002-04-17 14:49 ` John Alvord
2002-04-18 8:31 ` Jakob Østergaard [this message]
2002-04-25 13:09 ` rpm
2002-04-25 13:22 ` Andreas Schwab
2002-04-25 14:22 ` Richard B. Johnson
2002-04-25 15:24 ` Mark Mielke
2002-04-25 16:08 ` Richard B. Johnson
-- strict thread matches above, loose matches on Subject: below --
2002-04-29 16:19 Kerl, John
2002-04-26 22:10 Kerl, John
2002-04-29 12:33 ` Richard B. Johnson
[not found] <scc7dcc8.053@mail-02.med.umich.edu>
2002-04-25 14:52 ` Richard B. Johnson
2002-04-25 14:38 Nicholas Berry
2002-04-17 14:05 Andrey Ulanov
2002-04-17 14:20 ` Mike Black
2002-04-17 14:26 ` Richard B. Johnson
2002-04-17 14:29 ` Nikita Danilov
2002-04-17 15:20 ` Gunther Mayer
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