nag_zsymv (f16tac) Example Program Data
  3                      : n the dimension of matrix A
  Nag_Upper              : uplo
  (1.0, 0.0) ( 2.0, 0.0) : alpha, beta
  1 1                    : incx, incy
  (1.0, 1.0) ( 1.0, 2.0)  ( 1.0, 3.0)
             ( 2.0, 2.0)  ( 2.0, 3.0)
                          ( 3.0, 3.0) : the end of matrix A
  (-1.0, 0.0)
  ( 0.0, 2.0)
  (-3.0, 1.0)            : the end of vector x
  ( 6.0, 4.5)
  ( 8.5, 4.5)
  (12.0, 5.5)            : the end of vector y