Improving math function wrappers

[Joseph Myers]

On Thu, 16 Mar 2017, Joseph Myers wrote:

> * The next step after that would be to ensure that the new wrappers are 
> used in static libm, and in shared libm when the minimum symbol version 
> postdates the making of _LIB_VERSION into a compat symbol.  New 
> architectures, and static libm would no longer have any __kernel_standard 
> code or code related to _LIB_VERSION / matherr.

Also note care would be needed about testing at this point, as you'd then 
have significantly different code used in static libm (not well tested) 
from shared libm.

-- 
Joseph S. Myers
joseph@codesourcery.com