nag_sparse_direct_real_gen_refine (f11mhc) Example Program Results Solutions 1 2 1 0.7000 1.4000 2 0.1600 0.3200 3 0.5200 1.0400 4 0.7700 1.5400 5 0.2800 0.5600 Estimated Forward Error 5e-15 5e-15 Backward Error 3.6e-17 3.6e-17