Example program for dsbgvx

This example finds the eigenvalues in the half-open interval 0.0,1.0 , and corresponding eigenvectors, of the generalized band symmetric eigenproblem Az = λ Bz , where
A = 0.24 0.39 0.42 0.00 0.39 -0.11 0.79 0.63 0.42 0.79 -0.25 0.48 0.00 0.63 0.48 -0.03   and   B = 2.07 0.95 0.00 0.00 0.95 1.69 -0.29 0.00 0.00 -0.29 0.65 -0.33 0.00 0.00 -0.33 1.17 .