None of the base 10 formats, but the hobby calculation language Frink supports exact rational fractions, arbitrary width bigints (not pictured), intervals arithmetic, and symbolic expressions.<a href="https://frinklang.org/fsp/frink.fsp?fromVal=new+interval%5B-10%2C+1%2F5%2C+1%5D%5E2&toVal=#calc" rel="nofollow">https://frinklang.org/fsp/frink.fsp?fromVal=new+interval%5B-...
schiffern · · focus · HN ↗
<a href="https://frinklang.org/fsp/frink.fsp?fromVal=new+interval%5B-10%2C+1%2F5%2C+1%5D%5E2&toVal=#calc" rel="nofollow">https://frinklang.org/fsp/frink.fsp?fromVal=new+interval%5B-...