[PATCH] powerpc: Optimized version of powf()

[Joseph Myers]

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