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docs: changelog for compound/array N-Bit support

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Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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osobh
2026-06-03 13:04:22 +00:00
co-authored by Claude Opus 4.8
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CHANGELOG.md
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minima, decimal scale factors and fill values; reverse-engineered against minima, decimal scale factors and fill values; reverse-engineered against
HDF5 2.0 and validated end-to-end. The float E-scale variant remains HDF5 2.0 and validated end-to-end. The float E-scale variant remains
unsupported. unsupported.
- `clawhdf5-format`: decode the **N-Bit filter** (id 5), atomic variant — - `clawhdf5-format`: decode the **N-Bit filter** (id 5) — atomic, **compound**
previously unsupported. Unsigned reduced-precision datasets read end-to-end; and **array** layouts (the full recursive type tree, nestable to any depth),
signed values are restored to canonical bytes (datatype-level sign extension previously unsupported. Signed and unsigned reduced-precision integers and
of reduced-precision integers is a separate, pre-existing concern). Recursive float members all read end-to-end, validated against HDF5 2.0.
compound/array N-Bit layouts remain unsupported.
### Bug Fixes ### Bug Fixes
- `clawhdf5-format`: **sign-extend reduced-precision fixed-point integers** on - `clawhdf5-format`: **sign-extend reduced-precision fixed-point integers** on