From: "J.A. Magallon" <jamagallon@able.es>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Kirk Reiser <kirk@braille.uwo.ca>, linux-kernel@vger.kernel.org
Subject: Re: Advice saught on math functions
Date: Fri, 12 Jul 2002 18:22:29 +0200 [thread overview]
Message-ID: <20020712162229.GC2348@werewolf.able.es> (raw)
In-Reply-To: <E17T1a9-00037I-00@the-village.bc.nu>; from alan@lxorguk.ukuu.org.uk on Fri, Jul 12, 2002 at 16:39:41 +0200
On 2002.07.12 Alan Cox wrote:
>> Are these functions which are supplied by the FPU? I've looked
>> through the fpu emulation headers and exp() is the only one I can find
>
>You can't use FPU operations in the x86 kernel.
>
Are you to worried about precission ? Can't you just do your sin() etc.
in fixed point ? (and move all your fpdata to fixed point, of course)
Or perhaps you could use some kind of DCT ?
--
J.A. Magallon \ Software is like sex: It's better when it's free
mailto:jamagallon@able.es \ -- Linus Torvalds, FSF T-shirt
Linux werewolf 2.4.19-rc1-jam3, Mandrake Linux 8.3 (Cooker) for i586
gcc (GCC) 3.1.1 (Mandrake Linux 8.3 3.1.1-0.7mdk)
next prev parent reply other threads:[~2002-07-12 16:20 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-12 14:08 Advice saught on math functions Kirk Reiser
2002-07-12 14:39 ` Alan Cox
2002-07-12 14:52 ` Kirk Reiser
2002-07-12 15:32 ` Alan Cox
2002-07-12 16:04 ` Kirk Reiser
2002-07-12 16:31 ` Alan Cox
2002-07-12 16:21 ` Dave Jones
2002-07-15 9:46 ` Eric W. Biederman
2002-07-16 5:26 ` H. Peter Anvin
2002-07-15 10:03 ` Eric W. Biederman
2002-07-15 14:10 ` Kirk Reiser
2002-07-15 16:38 ` Eric W. Biederman
2002-07-12 15:46 ` Nicolas Pitre
2002-07-12 16:30 ` Kirk Reiser
2002-07-12 17:03 ` Nicolas Pitre
2002-07-12 16:22 ` J.A. Magallon [this message]
2002-07-12 16:49 ` William Park
2002-07-13 14:00 ` Pavel Machek
2002-07-13 17:10 ` Alan Cox
2002-07-12 14:46 ` Richard B. Johnson
2002-07-12 15:42 ` Sandy Harris
2002-07-12 16:46 ` Kirk Reiser
2002-07-14 0:20 ` Erik Andersen
2002-07-14 14:17 ` Sandy Harris
2002-07-14 16:49 ` Albert D. Cahalan
2002-07-14 17:01 ` Thunder from the hill
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