[PATCH] Optimized generic expf and exp2f

[Joseph Myers]

On Mon, 11 Sep 2017, Szabolcs Nagy wrote:

> it is not yet clear to me how to do the errno-only-wrapper,
> since the existing wrapper-template machinery does not
> work on a per function basis, but that code would be nice
> to reuse, some guidance on that would be helpful.

I'd expect something like

#include <math-type-macros-float.h>
#undef __USE_WRAPPER_TEMPLATE
#define __USE_WRAPPER_TEMPLATE 1
#include <w_exp_template.c>

should work.  (Modulo possibly needing to do something extra to give expf 
the right symbol version.)  A sysdeps w_expf.c should always override the 
default automatic generation based on the template.

-- 
Joseph S. Myers
joseph@codesourcery.com