nag_complex_banded_eigensystem_solve (f12auc) Example Program Results Number of eigenvalues wanted = 4 Number of eigenvalues converged = 4 Eigenvalues are closest to Sigma = ( 0.400000 , 0.600000 ) Ritz values closest to sigma 1 2 1 0.3610 0.7223 2 0.4598 0.7199 3 0.2868 0.7241 4 0.2410 0.7257