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Re: [PATCH] powerpc: Optimized version of powf()
- From: Joseph Myers <joseph at codesourcery dot com>
- To: Szabolcs Nagy <nsz at port70 dot net>
- Cc: Paul Clarke <pc at us dot ibm dot com>, "libc-alpha at sourceware dot org" <libc-alpha at sourceware dot org>
- Date: Fri, 9 Jun 2017 20:14:05 +0000
- Subject: Re: [PATCH] powerpc: Optimized version of powf()
- Authentication-results: sourceware.org; auth=none
- References: <12ffe69c-1416-b216-7883-7e69b6ce1e89@us.ibm.com> <20170609175531.GS9350@port70.net>
On Fri, 9 Jun 2017, Szabolcs Nagy wrote:
> * Paul Clarke <pc@us.ibm.com> [2017-06-08 18:37:24 -0500]:
> > Most significant changes are code simplification and use of doubles for
> > intermediate values. Also, some rearrangement to move early
> > non-dependent code later, out of the faster paths.
>
> note that i plan to post my powf implementation that i think
> is better, but i cant promise it for this release cycle.
I think this illustrates why we need benchmarks so that implementations
can be compared on the basis of something other than "think is better".
--
Joseph S. Myers
joseph@codesourcery.com