From: VINOD GOPAL <vinod_gopal74@yahoo.com>
To: John Bradford <john@grabjohn.com>, linux-kernel@vger.kernel.org
Subject: Re: arithmetic functions for linux driver
Date: Wed, 17 Mar 2004 10:15:37 -0800 (PST) [thread overview]
Message-ID: <20040317181537.43286.qmail@web60709.mail.yahoo.com> (raw)
In-Reply-To: <200403171811.i2HIBA7o000386@81-2-122-30.bradfords.org.uk>
The range of input is varying.
Iam looking for floating point arithmetic functions
like log10, pow , sin ,exp , cos etc.
-vg
--- John Bradford <john@grabjohn.com> wrote:
> > I need to use the arithmetic functions like sin,
> cos,
> > exp, log, etc in linux device driver.
> >
> > On search read , not to use libm from kernel
> driver
> > as it will harm the fpu registers.
> >
> > Do you have any insight how to support these
> > functions in linux driver or any code that is
> > available which I can make use of?
>
> What exactly are you trying to do? Why not simply
> create a look up
> table for the functions you need, if the expected
> range of input
> values is small?
>
> John.
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next prev parent reply other threads:[~2004-03-17 18:15 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-17 10:44 Linux 2.4.25, nfs client hangs when talking to a MacOS nfs server Charles-Edouard Ruault
2004-03-17 16:58 ` Trond Myklebust
2004-03-17 17:41 ` Charles-Edouard Ruault
2004-03-17 17:59 ` arithmetic functions for linux driver VINOD GOPAL
2004-03-17 18:11 ` John Bradford
2004-03-17 18:15 ` VINOD GOPAL [this message]
2004-03-17 18:50 ` Richard B. Johnson
2004-03-17 20:27 ` John Bradford
2004-03-17 18:17 ` Chris Friesen
2004-03-17 18:36 ` Richard B. Johnson
2004-03-17 23:21 ` Peter Williams
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