()
| 576 | |
| 577 | // Swap inputs without letting either input go dead during the swap. |
| 578 | Node swap12() { |
| 579 | unlock(); // Hash is order dependent |
| 580 | _inputs.swap(1,2); |
| 581 | return this; |
| 582 | } |
| 583 | |
| 584 | /** |
| 585 | * Does this node contain all constants? Ignores in(0), as is usually |