nag_complex_sparse_eigensystem_init (f12anc) Example Program Results The 4 Ritz values of largest magnitude are: 1 ( 716.1973, -1029.5838) 2 ( 687.5834, -1029.5838) 3 ( 716.1973, 1029.5838) 4 ( 687.5834, 1029.5838)