| Work | Gate count | Constant inputs | Garbage outputs |
| [5] | 40 | 52 | 52 |
| [7] | 44 | 44 | 52 |
| [8] | 32 | 40 | 40 |
| [9] | 42 | 42 | 49 |
| Proposed | 20 | 16 | 32 |