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Write complex numbers, incl. HDF5 2.0 native complex (class 11) #26

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osobh merged 3 commits from feat/write-complex into main 2026-09-29 03:11:22 +00:00
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osobhandClaude Opus 5.5 c033660d0d docs: known-issues — cite PRs #23 and #24
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Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
 2026-09-28 21:38:37 -05:00
osobhandClaude Opus 5.5 5e9160f82c docs: README — one datatypes row for complex writing and small floats
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Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
 2026-09-28 21:25:12 -05:00
osobhandClaude Opus 5.5 d0d5347cd9 feat: write complex numbers, incl. HDF5 2.0 native complex (class 11) 
- Datatype::Complex serializes class 11 version 5 byte-identically to
  libhdf5 2.2.0; containers holding it are written as version 5.
- DatasetBuilder::with_complex_f32/f64_data (h5py's {r, i} compound,
  default) and with_native_complex_f32/f64_data (class 11, opt-in);
  make_(native_)complex_f32/f64_type for attributes.
- Dataset::read_complex_f64/f32 read either form.
- Python create_dataset accepts complex64/complex128 (compound form).
- Parsing unchanged: class 11 still surfaces as {r, i}.
- Tests vs h5py 3.16 / libhdf5 2.0.0 and h5dump 2.2.0; docs.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
 2026-09-28 21:25:03 -05:00