libmvec in gcc to have vector math in fortran

[Szabolcs Nagy]

On 15/06/18 08:59, Florian Weimer wrote:
> * Richard Biener:
> 
>> 'pure' makes it pure but there doesn't seem to be a way to make it const?
> 
> Does Fortran support setting the rounding mode?
> 

yes, but vec math is only enabled with -ffast-math (so it can
assume -fno-rounding-math)

> In C, sin is not const because it depends on the current rounding
> mode.
> 

hm i don't see const in glibc even in case of -ffast-math compilation,
i wonder if that can be changed.