Olga — Intelligent Document Processing
Copyright 2026 Hugues Dtankouo

This product includes software developed at Anthropic's
tooling community and by the broader open-source ecosystem.

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This product contains test fixtures transliterated from Apache POI
(https://poi.apache.org/), an open-source Java library developed by
the Apache Software Foundation and licensed under the Apache License,
Version 2.0. The affected files are:

  - src/formats/xlsx/number_format/poi_fixtures.rs

These fixtures preserve the structure and expected values of POI's
`TestDataFormatter` so Olga's XLSX number-format engine can be measured
against the same empirical corpus. See ATTRIBUTION.md for the full
scope note.

Apache POI
Copyright 2003-2025 The Apache Software Foundation

This product also contains test fixtures transliterated from SheetJS
SSF (https://github.com/SheetJS/ssf), an open-source JavaScript number-
format library licensed under the Apache License, Version 2.0. The
affected files are:

  - src/formats/xlsx/number_format/ssf_fixtures.rs

SheetJS SSF
Copyright (C) 2013-present SheetJS LLC

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The rendering code itself (the number-format parser, section splitter,
and per-kind formatters under `src/formats/xlsx/number_format/`) is an
independent Rust implementation, written from scratch against the
ECMA-376 specification (§18.8.30) and aligned on the observable
contract of the above reference implementations — not a line-by-line
translation of their source.
