nag_lapacklin_zposv (f07fnc) Example Program Data
   4              1                                          : n, nrhs
 ( 3.23,  0.00) ( 1.51, -1.92) ( 1.90,  0.84) ( 0.42,  2.50)
                ( 3.58,  0.00) (-0.23,  1.11) (-1.18,  1.37)
                               ( 4.09,  0.00) ( 2.33, -0.14)
                                              ( 4.29,  0.00) : matrix A
 ( 3.93, -6.14) ( 6.17,  9.42) (-7.17,-21.83) ( 1.99,-14.38) : vector b