nag_sparse_real_symm_precon_ichol (f11jac) Example Program Data
 7                               n
 16                              nnz
 0 0.0                           lfill, dtol
 Nag_SparseSym_UnModFact 0.0     mic, dscale
 Nag_SparseSym_MarkPiv           pstrat
  4.   1    1
  1.   2    1
  5.   2    2
  2.   3    3
  2.   4    2
  3.   4    4
 -1.   5    1
  1.   5    4
  4.   5    5
  1.   6    2
 -2.   6    5
  3.   6    6
  2.   7    1
 -1.   7    2
 -2.   7    3
  5.   7    7        a[i-1], irow[i-1], icol[i-1], i=1,...,nnz