From: Ivan Lazar Miljenovic

man writes:

...

http://hackage.haskell.org/package/hmatrix-0.8.1.1

it wraps gls, blas and lapack (so you need to install the libraries).

There's also the blas package if you just want blas support.

I've been using blas recently with very good results. It's great if all you need are simple matrix operations. I just wanted to point out that it doesn't install on ghc-6.12.1 because the ieee dependency provides a type class instance for CLDouble, which was omitted from ghc-6.12.1. I got around this by commenting out the instance in CLDouble in the ieee package, then everything installed and runs properly (using OSX 10.6, compiled with -faccelerate). John