nag_dposvx (f07fbc) Example Program Results Solution(s) 1 2 1 1.0000 4.0000 2 -1.0000 3.0000 3 2.0000 2.0000 4 -3.0000 1.0000 Backward errors (machine-dependent) 6.7e-17 7.9e-17 Estimated forward error bounds (machine-dependent) 2.3e-14 2.3e-14 Estimate of reciprocal condition number 1.0e-02 A has not been equilibrated