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 )