FA-48947 / PCM sample encoding / Member archive
Sign magnitude pcm: sign polarity · case 02
Configured sign polarity is ignored for a sign-magnitude stream.
Case contract
Decode sign-magnitude PCM with configurable physical sign-bit polarity and preserve numerical negative zero as a Boolean sideband.
Why this case matters
Offline PCM interchange uses these exact bounded packet and sample representation decisions.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| oracle 2 | [[0, 0, 1, -1], [false, true, false, false]] | [[0, 0, -1, 1], [true, false, false, false]] | Failed |
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