From: "Jakob Østergaard" <jakob@unthought.net>
To: Joe <joeja@mindspring.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: bug in float on Pentium
Date: Sat, 14 Apr 2001 05:01:01 +0200 [thread overview]
Message-ID: <20010414050101.G13740@unthought.net> (raw)
In-Reply-To: <3AD78A6C.F0F3CF5A@mindspring.com>
In-Reply-To: <3AD78A6C.F0F3CF5A@mindspring.com>; from joeja@mindspring.com on Fri, Apr 13, 2001 at 07:23:24PM -0400
On Fri, Apr 13, 2001 at 07:23:24PM -0400, Joe wrote:
> Not sure but I think I found a NEW bug.
>
> I know that there have been some issues with pentiums and floating point
> arrithmatic, but this takes the cake...
>
> Linux Lserver.org 2.2.18 #43 SMP Fri Mar 9 14:19:41 EST 2001 i586
> unknown
>
...
>
>
> I am getting the following as output
>
> joeja@Lserver$ ./testf
> 5483.990000
> 5483.990234
>
>
> what is with the .990234?? it should be .990000
>
> any ideas on this??
>
Your second number is a 32-bit float - which has roughly 7 digits of
precision. Just like your program output clearly shows.
(I do however fail to see the relevance of this to linux-kernel)
--
................................................................
: 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:[~2001-04-14 3:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-13 23:23 bug in float on Pentium Joe
2001-04-14 2:57 ` Alan Cox
2001-04-14 3:01 ` Jakob Østergaard [this message]
2001-04-14 5:35 ` Jonathan Morton
2001-04-15 6:02 ` Matt Billenstein
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