From: hpa@zytor.com (H. Peter Anvin)
To: linux-kernel@vger.kernel.org
Subject: Re: How to use floating point in a module?
Date: Tue, 1 Jun 2004 20:52:37 +0000 (UTC) [thread overview]
Message-ID: <c9iqal$35d$1@terminus.zytor.com> (raw)
In-Reply-To: 200406010038.i510cxk23507@mailout.despammed.com
Followup to: <200406010038.i510cxk23507@mailout.despammed.com>
By author: ndiamond@despammed.com
In newsgroup: linux.dev.kernel
>
> (The CPU is an i686. I'll have to look up its opcodes and see if its
> hardware will come close enough for everything the driver needs. If it
> doesn't, I'll buy one of the books that some others kindly recommended
> and do polynomial approximations.) (By the way the driver is being
> ported from VxWorks, where it seems that the kernel can do floating
> point including trig, logarithms, etc.)
>
On x86 (more specifically, on x87) if you can do it at all then you
can do them all. All that really means is that the fp library is in
microcode on x87.
-hpa
next prev parent reply other threads:[~2004-06-01 20:53 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-01 0:38 How to use floating point in a module? ndiamond
2004-06-01 20:52 ` H. Peter Anvin [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-06-02 5:52 ndiamond
2004-06-02 19:31 ` Valdis.Kletnieks
2004-06-01 2:27 ndiamond
2004-05-31 20:38 Manfred Spraul
2004-05-31 21:11 ` Horst von Brand
2004-05-31 2:50 ndiamond
2004-05-31 4:02 ` Chris Friesen
2004-05-31 5:44 ` Ian Kent
2004-05-31 6:13 ` Peter Williams
2004-05-31 13:39 ` Horst von Brand
2004-05-31 20:12 ` Michal Jaegermann
2004-05-31 20:23 ` Hugo Mills
2004-05-31 22:43 ` Peter Williams
2004-05-31 1:52 ndiamond
2004-05-31 2:18 ` Måns Rullgård
2004-05-30 22:39 ` Calvin Spealman
2004-05-31 4:28 ` Linus Torvalds
2004-05-31 3:57 ` Calvin Spealman
2004-05-31 3:59 ` Matt Mackall
2004-05-31 4:11 ` Stephen Smoogen
2004-05-31 14:55 ` Scott Robert Ladd
2004-06-01 2:11 ` Richard B. Johnson
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