nag_lapacklin_zgbrfs (f07bvc) Example Program Results Solution(s) 1 2 1 (-3.0000, 2.0000) ( 1.0000, 6.0000) 2 ( 1.0000,-7.0000) (-7.0000,-4.0000) 3 (-5.0000, 4.0000) ( 3.0000, 5.0000) 4 ( 6.0000,-8.0000) (-8.0000, 2.0000) Backward errors (machine-dependent) 1.8e-17 5.1e-17 Estimated forward error bounds (machine-dependent) 3.5e-14 4.3e-14