sla stands for simple linear algebra.
$ echo '1 2; 3 4' > A $ matinv < A > Ainv $ matcat A Ainv 1 2 3 4 -2 1 1.5 -0.5 $ matcat A Ainv | matmul 1 0 0 1
svn co svn://repo.hu/sla/trunk sla
Use the debian repository of repo.hu or get source snapshots at http://repo.hu/projects/sla/releases