Heh! I just read about these in an email from ACM, and found your post by 
searching this Group for UNUM. It looks like not yet, but perhaps we should 
do something about that?

The article which excited me:
http://ubiquity.acm.org/article.cfm?id=2913029

On Friday, November 6, 2015 at 8:23:35 AM UTC-6, Richard Davies wrote:
>
> Unum is a number representation system that is a superset of IEEE integers 
> and IEEE floats which avoids many problems (especially in floating point 
> arithmetic) as it has no rounding, no overflow to infinity, no underflow to 
> zero, and is safe to parallelize.
>
> I was wondering if anyone has implemented or is interested in implementing 
> this in Clojure/ClojureScript (or Java/JavaScript)?
>
> There is an existing reference implementation written in Mathematica and 
> it appears a port has already been done to Python: 
> https://github.com/jrmuizel/pyunum
>
> For more details of unum see
> https://www.youtube.com/watch?v=jN9L7TpMxeA
>
> https://www.crcpress.com/The-End-of-Error-Unum-Computing/Gustafson/9781482239867
> http://arith22.gforge.inria.fr/slides/06-gustafson.pdf
>
>
>

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