nag_lapackeig_dspgv (f08tac) Example Program Results Eigenvalues -2.2254 -0.4548 0.1001 1.1270 Estimate of reciprocal condition number for B 5.8e-03 Error estimates for the eigenvalues 4.7e-14 1.2e-14 5.6e-15 2.5e-14