| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 12 of 92 | 86% | 3 of 10 | 70% | 6 | 14 | 6 | 29 | 3 | 9 |
| DoubleNegativeUnitSystem(int) | | 90% | | 75% | 1 | 3 | 1 | 9 | 0 | 1 |
| invertSign() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| isNegativeUnit() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| toString() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| setInputSize(int) | | 94% | | 50% | 1 | 2 | 1 | 6 | 0 | 1 |
| setOutputSize(int) | | 94% | | 50% | 1 | 2 | 1 | 6 | 0 | 1 |
| multiply(DoubleConstantSystem) | | 100% | | 100% | 0 | 2 | 0 | 3 | 0 | 1 |
| unaryMinus() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 | |
| isNegativeUnitOperand() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |