[PATCH v3] Add powf bench tests

[Tulio Magno Quites Machado Filho]

Paul Clarke <pc@us.ibm.com> writes:

> Add powf() bench test with input which covers these cases:
> - positive base to positive exponent
> - exponent 0
> - negative base to even exponent
> - exponent 1
> - exponent -1
> - squared
> - squareroot
> - 1 to negative exponent
> - -1 to negative exponent
> - base 0
> - -1 to even exponent
> - small base
> - small exponent
>
> 2017-06-12  Paul A. Clarke  <pc@us.ibm.com>
>
> 	* benchtests/Makefile (bench-math): Add powf.
> 	* benchtests/powf-inputs: New file.

Pushed as 52256ccccef8.

-- 
Tulio Magno