[Cfp-interest 2542] Accurary of Mathematical Functions

[Paul Zimmermann]

       Dear all,

we have updated our comparison:

https://members.loria.fr/PZimmermann/papers/accuracy.pdf

The main change is that the LLVM library now implements a few
correctly-rounded routines in single precision (log, log10, log2,
hypot), and hypot in double precision.

It looks quite exciting users will soon be able to get correct rounding
in well-supported libraries!

Paul