question about the use of bfloat



R Fateman wrote:
> I think that your programs are way too elaborate.
> if a+b is a correctly rounded answer, then a lower bound on a+b  is to
> adjust by one unit in the last place.  (or even half a unit if you can
> do that.)
>
> IEEE floats and bfloats are correctly rounded.
> or should be.
>
>
>   
I see that the IEEE 754 standard gives precise rounding rules for up to 
80 bits (extended precision), but I don't see anything about higher 
precision than 80 bits.
Where is the source file for bfloat?

TIA,
 -sen