nag_dgbcon (f07bgc) Example Program Data
  4  1  2                     :Values of N, KL and KU
 -0.23   2.54  -3.66
 -6.98   2.46  -2.73  -2.13
         2.56   2.46   4.07
               -4.78  -3.82   :End of matrix A