[PATCH v3] powerpc: Add a POWER8-optimized version of cosf()

[Tulio Magno Quites Machado Filho]

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

> This implementation is based on the one already used at
> sysdeps/powerpc/powerpc64/fpu/multiarch/s_sinf-power8.S.
>
> 2017-05-11  Paul A. Clarke  <pc@us.ibm.com>
>
> 	* sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
> 	[$(subdir) = math] (libm-sysdep_routines): Add s_cosf-power8 and
> 	s_cosf-ppc64.
> 	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_cosf-power8.S: New file.
> 	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_cosf-ppc64.c: Likewise.
> 	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_cosf.c: Likewise.
> 	* sysdeps/powerpc/powerpc64/power8/fpu/s_cosf.S: Likewise.

LGTM too.
Pushed as b2980e3c545294d71b3960ce74b6148e274d2488.

-- 
Tulio Magno