Re: [PATCH] improves exp() and expf() performance on Sparc.

[Patrick McGehearty <patrick dot mcgehearty at oracle dot com>]

On 9/4/2017 6:43 AM, Szabolcs Nagy wrote:
> On 01/09/17 23:59, Patrick McGehearty wrote:
> > --- /dev/null
> > +++ b/sysdeps/sparc/fpu/libm_endian.h
> is this header useful?
>
> > +#define	XBIASED_EXP(x)	((((int *)&x)[HIXWORD] & 0x7fffffff) >> 16)
> > +#define	ISZEROL(x)	(((((int *)&x)[0] & ~XSGNMSK) | ((int *)&x)[1] | \
> > +				((int *)&x)[2] | ((int *)&x)[3]) == 0)
> i don't see these used and such aliasing violation
> is not acceptable anyway.
These definitions are not used in the new exp routines.
I will remove them from my next submission as well as HIXWORD and XSGNMSK.
If later porting of other math routines suggests
they might be useful, we can discuss what to do at that time.

- patrick