nag_zpttrs (f07jsc) Example Program Data
    4             2                                : n,  nrhs
 ( 16.0,-16.0) ( 18.0,  9.0) (  1.0,  4.0)         : sub-diagonal e
   16.0          41.0          46.0          21.0  : diagonal D
 ( 64.0, 16.0) (-16.0,-32.0)
 ( 93.0, 62.0) ( 61.0,-66.0)
 ( 78.0,-80.0) ( 71.0,-74.0)
 ( 14.0,-27.0) ( 35.0, 15.0)                       : matrix B