FA-15344 / Numerics / Member archive
Bareiss determinant: elimination pivot count · case 04
The exact bareiss determinant result violates the stated contract at elimination pivot count.
Case contract
Input nonempty square integer matrix; return exact determinant using pivoted fraction-free elimination.
Why this case matters
Exact discrete arithmetic with observable algorithmic state; no floating point approximation is used.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| explicit oracle 0 | 2 | 5 | Failed |
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