[PATCH] powerpc: Optimized version of powf()

[Joseph Myers]

Also, for performance improvements we generally like to have actual 
benchmark results.  Could you add a powf benchmark, with whatever inputs 
you think are suitably representative, to the benchtests suite, in a 
separate patch, and then include before-and-after results for that 
benchmark, on any one system of your choice, in the submission of the powf 
patch?  That then provides a basis for assessing any future powf 
improvements or reimplementations anyone else comes up with.

-- 
Joseph S. Myers
joseph@codesourcery.com