[PATCH] Fix remainder calculating bug in single floating pointdivision

[Liu Yu]

> -----Original Message-----
> From: linuxppc-dev-bounces+b13201=freescale.com at ozlabs.org 
> [mailto:linuxppc-dev-bounces+b13201=freescale.com at ozlabs.org] 
> On Behalf Of Kumar Gala
> Sent: Tuesday, January 08, 2008 2:20 PM
> To: Dan Malek
> Cc: Liu Yu; linuxppc-dev at ozlabs.org
> Subject: Re: [PATCH] Fix remainder calculating bug in single 
> floating pointdivision
> 
> 
> On Jan 6, 2008, at 2:44 PM, Dan Malek wrote:
> 
> >
> > On Jan 6, 2008, at 12:07 PM, Benjamin Herrenschmidt wrote:
> >
> >> It's nice to see somebody digging in that scary math emu stuff. If 
> >> 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.
> >
> >> .... that this code was lifted from
> >> somewhere else (glibc ? gcc soft-float ?),
> >
> > It seems like a lifetime ago....  I copied the framework 
> from Sparc, 
> > and the internals from gcc soft-float.  I didn't change any of the 
> > internal emulation functions (hence, some of the warnings), 
> just the 
> > calling interface.
> >
> > While it's convenient, I still don't think kernel float emulation 
> > should be a solution.  The tools should generate soft-float for the 
> > applications and libraries.
> 
> 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?

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