()
| 573 | |
| 574 | // Swap inputs without letting either input go dead during the swap. |
| 575 | Node swap12() { |
| 576 | unlock(); // Hash is order dependent |
| 577 | Node tmp = in(1); |
| 578 | _inputs.set(1,in(2)); |
| 579 | _inputs.set(2,tmp); |
| 580 | return this; |
| 581 | } |
| 582 | |
| 583 | /** |
| 584 | * Does this node contain all constants? Ignores in(0), as is usually |