realToFrac issues

[Ashley Yakeley]

John Meacham wrote:

> The proposed solution was to add NaN, +Infinity, and -Infinity to
> rational with the representations 0 :% 0, 1 :% 0, and -1 :% 0
> respectively. Seems straightforward, (and generally useful) but we
> should make sure not to forget it for haskell-prime. 

I'm not necessarily against this, but it does fundamentally change the 
semantics of Ratio. Has all the behaviour been worked out for this?

-- 
Ashley Yakeley