Example Program Data for nag_sparse_lin_sys_ex02
   7   18        : n, nnz
 ( 2. ,-1. )  2  : value(1), i_mat_comm(1) containing col(1)
 (-1. , 4. )  4
 ( 5. , 1. )  5
 ( 1. ,-2. )  1
 (-3. , 2. )  3
 ( 2. ,-6. )  6
 ( 7. , 2. )  7
 (-3. ,-2. )  2
 ( 6. ,-3. )  6
 (-1. , 4. )  1
 ( 4. ,-3. )  3
 ( 5. , 4. )  4
 (-5. ,-6. )  6
 ( 6. , 3. )  3
 ( 4. ,-6. )  4
 ( 7. , 6. )  7
 (-1. , 7. )  1
 ( 6. , 7. )  6  : value(nnz), i_mat_comm(nnz) containing col(nnz) 
  1   4   8  10
 12  14  17  19  : i_mat_comm(nnz+1:nnz+n+1) containing pntrb(1:n+1) 
 ( 12.0,-42.0) ( 43.0, 54.0) (-19.0, 16.0) ( 8.0,-22.0)
 ( -8.0, 45.0) (114.0, 55.0) (-23.0,-26.0)   : b(1:n)