scipy/scipy — pull request #200 by rngantner (2012-04-23 18:42:27+00:00)
Title: Expm rewrite

The current version of the matrix exponential in scipy is very slow, due to an outdated algorithm.
I implemented a newer version, which is the same algorithm Matlab uses.
Source: "The Scaling and Squaring Method for the Matrix Exponential Revisited", Nicholas Higham, 2005.
I hope I didn't do too much wrong, this is my first commit to a large project...