FA-49897 / PCM sample encoding / Member archive

Pcm nonlinear reconstruction table: last code valid · case 02

The final reconstruction code is rejected as if the table endpoint were exclusive.

Member previewVariant 2 · 3 implementations · 8 checks per implementation

Case contract

Decode an explicitly calibrated nonlinear PCM code table relative to its designated zero entry; invalid indices return null rather than a plausible sample.

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 fixture	Actual	Expected	Outcome
oracle 1	`[-7, 0, 6, null]`	`[-7, 0, 6, 17]`	Failed

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

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