matmul_reproducible — DRIVE ozaki op

• Data kinds: matrix × matrix → matrix

• Call: import fullseye as fs; fs.ledger.matmul_reproducible(A, B, tol: 'float' = 1.1102230246251565e-16) (to call the implementation directly, import ozakimm; ozakimm.matmul_reproducible(A, B, tol: 'float' = 1.1102230246251565e-16); from the registry, opsdrive.get("matmul_reproducible"))

Usage

> This operator's description has not been translated yet. The original text follows as it is.

ビット単位で再現する FP64 の精度の `A @ B(保証できなければ ValueError` = fail-closed)。

:func:matmul_ozaki の Ozaki-I の自動選択に `on_insufficient="raise"` を固定したもの。誤差は要素ごとに

`tol · (|A||B|)_ij` + 最後の組み立ての丸め(数 ulp)以下。内側の添字の順(点の順)・BLAS のスレッド数に依らず

同じビットを返す。点群の 3×N @ N×3 や 6×N @ N×6 の縮約向け(出力が大きい積では DGEMM の 15〜83 倍遅い)。

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• poc_reproducible_icp — py -3.11 examples/poc_reproducible_icp.py

Ops the type connects to (they accept matrix as input)

world_camera · lidar_scan · relative_motion · foe_from_motion · flow_from_depth_motion · ttc_truth · world_materials · mesh_signed_volume

Same category (ozaki)

matmul_ozaki · ozaki_error_bound · cross_covariance_reproducible · kabsch_reproducible · fp64_emulation_probe

*Provenance: ozakimm.py — DRIVE operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.