nag_opt_handle_set_qconstr_fac (e04rtc) Example Program Data
  3   2   4                                 : n, m, nnza
  1 1 2 2                                   : irowa
  1 2 2 3                                   : icola
  0.493 0.382 0.270 0.475                   : a
  0.2 0.4                                   : b
  -1.0 -1.0 -1.0                            : xl
  1.0 1.0 1.0                               : xu