complex-integrate
Small and simple library for integration of complex functions. Integrates functions along straight lines. Compatible with real-valued functions. Uses Simpson's method.
As of Oct, 2011 I could not find any haskell package which could provide me with something so simple as this.
cabalized: install with
$ cabal install complex-integrate
Provides you with only a single function:
integrate f n a b
which integrates f along a line between points a and b while dividing this line in n segments, providing accuracy.