A small library for arbitrary-precision ratio types.
The main type exported by this library is Data.Ratio.Rational, which is a
number type stored as the ratio between two integers. The ratio is always stored
in reduced form to save memory space, but this comes at the cost of worst-case
O(n) arithmetic.
The specific integer type used for the ratio can be set by using Data.Ratio.Ratio,
which takes a type parameter a. Most operations require Integral a.