[PING] floatformat.h: Add bfloat16 support.

[Joseph Myers]

On Tue, 8 Sep 2020, Willgerodt, Felix via Gcc-patches wrote:

> Thanks for your review. It seems like the format issue was introduced by 
> my email client when hitting reply. Sorry for that! The original patch 
> is formatted correctly, as I used git send-email: 
> https://gcc.gnu.org/pipermail/gcc-patches/2020-August/552079.html
> 
> Could you double-check and push the patch for me? This is the first time 
> I contribute to gcc and I therefore don't have write access.

I've now pushed this patch.

-- 
Joseph S. Myers
joseph@codesourcery.com