From: "Joseph S. Myers" <joseph@codesourcery.com>
To: Kumar Gala <galak@kernel.crashing.org>
Cc: David Miller <davem@davemloft.net>,
lkml List <linux-kernel@vger.kernel.org>,
libc-alpha@sourceware.org
Subject: Re: math-emu issue with fp divide
Date: Wed, 4 Jun 2008 21:42:55 +0000 (UTC) [thread overview]
Message-ID: <Pine.LNX.4.64.0806042134020.32021@digraph.polyomino.org.uk> (raw)
In-Reply-To: <9BECB10D-536E-4242-A2F5-6E1EF8CBDB40@kernel.crashing.org>
On Wed, 4 Jun 2008, Kumar Gala wrote:
> I'm trying to move the powerpc math-emu
> code to use the include/math-emu bits.
I'd like to remind people that the include/math-emu code is based on an
old, buggy version of the soft-fp code in glibc. RTH previously noted
<http://sourceware.org/ml/libc-alpha/2006-02/msg00075.html> that the fixes
should go in the kernel, when approving a patch of mine fixing various
bugs and speeding up soft-fp, and several more bugs have been fixed since
then in the course of GCC work on soft-float for Power and __float128
support for x86_64.
So it may be better than the old code you're replacing, but it might still
be a good idea to merge things with the current glibc code, as a matter of
both correctness and performance. (And there may well still be bugs left
in the code.)
--
Joseph S. Myers
joseph@codesourcery.com
next prev parent reply other threads:[~2008-06-04 21:49 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-04 20:38 Kumar Gala
2008-06-04 21:37 ` David Miller
2008-06-04 21:42 ` Joseph S. Myers [this message]
2008-06-04 21:49 ` David Miller
2008-06-05 13:38 ` Kumar Gala
2008-06-13 4:24 ` David Miller
2008-06-13 15:49 ` Kumar Gala
2008-06-27 13:48 ` Kumar Gala
2008-06-27 22:54 ` David Miller
2008-06-27 14:15 ` Kumar Gala
2008-10-22 5:15 ` David Miller
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