nag_complex_sparse_eigensystem_sol (f12aqc) Example Program Results The 4 Ritz values of largest magnitude are: 1 ( 20383.0384 , -0.0000 ) 2 ( 20338.7563 , 0.0000 ) 3 ( 20265.2844 , -0.0000 ) 4 ( 20163.1142 , 0.0000 )