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Re: [PATCH] Update ppc ulps

From: Jakub Jelinek <jakub at redhat dot com>
To: Steven Munroe <munroesj at us dot ibm dot com>
Cc: Ulrich Drepper <drepper at redhat dot com>, Glibc hackers <libc-hacker at sources dot redhat dot com>
Date: Sun, 24 Sep 2006 22:49:17 +0200
Subject: Re: [PATCH] Update ppc ulps
References: <20060924101331.GV4556@sunsite.mff.cuni.cz> <4516E681.8000903@us.ibm.com>
Reply-to: Jakub Jelinek <jakub at redhat dot com>

On Sun, Sep 24, 2006 at 03:11:45PM -0500, Steven Munroe wrote:
> >I'm getting on both ppc and ppc64 2.125 ulp error on clog10 (> 2ulp
> >allowed), 0.75ulp on y0 1/8 and 1ulp on imag csinh (-2-3i).
> >
> Which gcc are you using? I found that gcc-4.2 or gcc-4.1.1 with the 
> reassociation patch backport causes upls errors in ppc that are not 
> there for just gcc-4.1.1.

I have reassoc backport in.  That's one of the reasons why I haven't
regenerated the ulps, just merged, so that both vanilla 4.1.x, 4.1.x
with reassoc etc. pass.  While in the above 4 cases gcc with reassoc
generates worse code, for several ones there is an improvement too.

	Jakub

References:
- [PATCH] Update ppc ulps
  - From: Jakub Jelinek
- Re: [PATCH] Update ppc ulps
  - From: Steven Munroe

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