Numerical algorithms in pure Haskell.
The algorithms are based on Numerical Recipes in C. The abstractions aren't.
> ridderToRoot sin (3.1, 3.2) 1e-10
Just 3.141592653589793I translated a few of the algorithms in NR out of curiosity, focusing on readability. I wanted to learn more about the algorithms and see how Haskell and C differ.
The main abstraction is the Refinable typeclass which provides a way to capture the common structure of numerical algorithms. It reduces boiler plate a lot and makes it easy to identify the unique parts of different algorithms.