To Solve [A]{X} = {B} for 3x3 matrix
| 1 0 0 | | X1 | | 1 |
| 0 2 1 | | X2 | = | 3 |
| 0 1 3 | | X3 | | 6 |
K.PTRS = { 0 1 0 }
K11.INDXS = { 3 }
K11.COEFS = { 1. }
K.DIAG = { 1 2 3 }
k.RHS = { 1 3 6 }
GPS Output (Fortran)