arpack_test, FORTRAN90 codes which call arpack, which computes eigenvalues and eigenvectors of large matrices.
arpack, a FORTRAN90 code which computes eigenvalues for large matrices, which includes a reverse communication (RC) feature, by Richard Lehoucq, Danny Sorensen, Chao Yang;
SSSIMP is a simple symmetric test problem:
SNSIMP is a simple nonsymmetric test problem: