file laso/readme for overview of laso file laso/dilaso.f for all eigenvalues and eigenvectors of a sparse symmetric matrix outside an excluded interval, block Lanczos with orthogonalization prec double gams d4a1, d4a7 file laso/silaso.f for all eigenvalues and eigenvectors of a sparse symmetric matrix outside an excluded interval, block Lanczos with orthogonalization prec single gams d4a1, d4a7 file laso/dnlaso.f for a few eigenvalues and eigenvectors of a sparse symmetric matrix from either end of the spectrum, block Lanczos with orthogonalization prec double gams d4a1, d4a7 file laso/snlaso.f for a few eigenvalues and eigenvectors of a sparse symmetric matrix from either end of the spectrum, block Lanczos with orthogonalization prec single gams d4a1, d4a7 file laso/doc for user manual for the LASO package file laso/lanczos3 for sample driver program for the LASO package .