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Xor coded pcm: signed field · case 03

Sign is tested before the sign line is uninverted.

Member previewVariant 3 · 3 implementations · 8 checks per implementation

Case contract

Undo a per-line XOR inversion map within a signed PCM field before interpreting sign and detecting canonical zero.

Why this case matters

Offline PCM interchange uses these exact bounded packet and sample representation decisions.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixtureActualExpectedOutcome
oracle 2[[-16, true], [8, false], [-9, false]][[0, true], [-8, false], [7, false]]Failed

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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