nag_sparseig_feast_real_gen_solve (f12jkc) Example Program Data 5 n 9 nnz 3.5 1 1 2.1 1 3 1.4 2 2 1.6 2 5 -2.1 3 1 3.5 3 3 -1.3 4 4 -0.1 5 2 1.7 5 5 a[i], irow[i], icol[i], i=0,...,nnz-1