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From: Jonathan Turkanis (technews_at_[hidden])
Date: 2005-04-07 15:49:17

Sylvain Pion wrote:

> I don't know if it qualifies as real-world, but CGAL (
> provides a Quotient<> class and uses it heavily.
> It is basically the same thing as boost::rational, although I have
> not checked the differences in detail, nor tried it.
> It is used together with big ints or big floats, mostly.

Since I haven't got many responses from people using boost::rational with finite
precision types, maybe Quotient<> can help shed light on the question whether
rational<int> is useless without rounding: do you know whether Quotient<> is
ever used with finite precision types, and if so, what is its behavior when the
result of an operation cannot be expressed exactly?

> As far as standardization is concerned, I think a big int
> class should go together with a big rational class
> (which can benefit from being template).

Don't you get a "big rational" class for free, as rational<bigint>?


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