main topics covered by this package are: computation and ordering of matrix Schur forms,
computation of block diagonal form, solution of linear and quadratic matrix equations
(Lyapunov, Sylvester, and Riccati), stabilization and eigenvalue assignment, computation of
matrix exponentials. The rigorous selection of the algorithms and the associated computer
programs (including subprograms from BLAS, EISPACK, and LINPACK packages) led to a …