FA-14394 / Numerics / Member archive
Bounded diophantine: first coordinate endpoint · case 04
The exact bounded diophantine result violates the stated contract at first coordinate endpoint.
Case contract
Input [a,b,c,L], positive a,b and nonnegative L; lexicographically ordered nonnegative solutions a*u+b*v=c with u,v<=L.
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 | [[0, 2], [1, 1]] | [[0, 2], [1, 1], [2, 0]] | Failed |
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