RE: [PATCH] Fix remainder calculating bug in single floating pointdivision

-----Original Message-----
From: linuxppc-dev-bounces+b13201=3Dfreescale.com@ozlabs.org=20
[mailto:linuxppc-dev-bounces+b13201=3Dfreescale.com@ozlabs.org]=20
On Behalf Of Kumar Gala
Sent: Tuesday, January 08, 2008 2:20 PM
To: Dan Malek
Cc: Liu Yu; linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] Fix remainder calculating bug in single=20
floating pointdivision
=20
=20
On Jan 6, 2008, at 2:44 PM, Dan Malek wrote:
=20

quoted

On Jan 6, 2008, at 12:07 PM, Benjamin Herrenschmidt wrote:

quoted

It's nice to see somebody digging in that scary math emu stuff. If=20
you could also get rid of the warnings, it would be perfect :-)

Yes, it is :-)  I didn't think it would have a life beyond MPC8xx.

quoted

.... that this code was lifted from
somewhere else (glibc ? gcc soft-float ?),

It seems like a lifetime ago....  I copied the framework=20

from Sparc,=20

quoted

and the internals from gcc soft-float.  I didn't change any of the=20
internal emulation functions (hence, some of the warnings),=20

just the=20

quoted

calling interface.

While it's convenient, I still don't think kernel float emulation=20
should be a solution.  The tools should generate soft-float for the=20
applications and libraries.

=20
If we think this is really true, we could move to using include/math-
emu/* instead of the files in powerpc/math-emu.

Why it's better to move to using include/math-emu.
I found they have similar framework, is powerpc/math-emu evolved from
include/math-emu?

=20
The problem I had was when I tried to recreate the history of=20
the code in powerpc/math-emu and how it doesn't really match=20
the glibc code base.  There are some differences and I wasn't=20
sure if they were do to trying to match PPC HW at a bit level or not.
=20
I was hoping that the work Liu Yu would get as a bit of a=20
testsuite to see if there was any harm in moving over to=20
include/math-emu.
=20
- k
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-dev
=20