| IFUN | displayed function |
| 0 | the solution |
| 1 | the scalar function
|
| 2 | the vector function
|
| 3 | the alternate function QXY |
| 4 | the alternate vector function QXY |
| 5 | the error estimate
|
| 6 | the tangent function |
| 7 | the right singular vector |
| 8 | the left singular vector
|
| 9 | the Lagrange multiplier |
| 10 | the control variable |
| 11 | the dual function |