nag_dpbsvx (f07hbc) Example Program Results Solution(s) 1 2 1 5.0000 -2.0000 2 -2.0000 6.0000 3 -3.0000 -1.0000 4 1.0000 4.0000 Backward errors (machine-dependent) 1.1e-16 1.1e-16 Estimated forward error bounds (machine-dependent) 2.1e-14 3.0e-14 Estimate of reciprocal condition number 1.3e-02 A has not been equilibrated