Re: [boost] New numeric data type proposal

Subject: Re: [boost] New numeric data type proposal
From: John Maddock (boost.regex_at_[hidden])
Date: 2014-03-25 12:52:41

>> Thanks for the explanation, it's interesting, and almost the same as "exact floating point" types which are represented as a/b x 2^n and have exact (arbitrary precision) operations for everything except division (which is unsupported).
>>
>> John.
>
> I didn’t see exact floating points in Boost.
> Are they already implemented?
> The idea is pretty similar, I even considered the option of removing Qn and using just 3 integer types for the representation, but using same strategy of only change Qd when needed by an operation.
> If there is someone already working on that datatype I will like to join the effort.

No they're not implemented - it's on the TODO list ;-)

I actually don't *think* it would be that hard to implement, I just 
wondered what the pro's and cons of the different approaches were?

Regards, John.