CL-LAB is a collection of functions and macros that interface with the GSL bindings provided in GSLL for matrix operations. The functions provided here are similar to the functions provided in Octave for matrix manipulation.
CL-LAB has an asdf system definition. You can get a tarball here. Expand the tarball where you keep other asdf packages and create a link to the asd file in systems.
Currently, there is no documentation on the functions provided in cl-lab
1/22/09: Recent changes include bug fixes for matrix read functions. The macro vector-data replaces the gsll data function for vectors.