From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: 韩守谦 <hshouqian@domain.hid>
Cc: xenomai-help <xenomai@xenomai.org>
Subject: Re: [Xenomai-help] Porting rtai/linux applications to xenomai/linux
Date: Fri, 25 Sep 2009 16:13:12 +0200 [thread overview]
Message-ID: <4ABCCFF8.1060607@domain.hid> (raw)
In-Reply-To: <26553515.371391253884926657.JavaMail.coremail@domain.hid>
韩守谦 wrote:
>
> Hello everyone！ I'm Porting rtai/linux applications to xenomai/linux.
> I want to swith RTAI API to Xeno's native API. Now I have a
> problem:we know,rtai provides a kernel module: math.ko, so we can use
> math funtions in our kernel modules of our applications ,but xenomai
> doesn't provide the same functions. what should I do? My kernel
> module of application need some math functions.
As we already told in former posts, we do not support the math module,
and do not intend to support it.
Using math functions in kernel-space is probably the sign of a design
which does too many things in kernel-space. Move the computations to
user-space. Besides, using hardware maths in kernel-space has become
harder, since the linux kernel compilation flags contain -msoft-float by
default.
--
Gilles
next prev parent reply other threads:[~2009-09-25 14:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-25 13:22 [Xenomai-help] Porting rtai/linux applications to xenomai/linux 韩守谦
2009-09-25 14:13 ` Gilles Chanteperdrix [this message]
2009-09-25 14:15 ` Gilles Chanteperdrix
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