FA-3633 / Binary formats / Member archive
A packed-decimal sign nybble becomes a digit · case 03
A packed-decimal sign nybble becomes a digit.
Case contract
Decode one decimal digit and C/D sign nybble; reject malformed encodings.
Why this case matters
A local executable model for consumers of structured text; oracle values are authored literals, not outputs copied from the repaired implementation.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| boundary 1 | 3 | -3 | Failed |
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