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Add RANK.EQ function and RANK alias (HF-419) - #1786
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Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## develop #1786 +/- ##
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Coverage 97.26% 97.26%
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Files 203 203
Lines 16022 16034 +12
Branches 3555 3558 +3
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+ Hits 15583 15595 +12
Misses 431 431
Partials 8 8
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Summary
Adds the
RANK.EQfunction and itsRANKalias (HF-419).RANK.EQ(number, ref, [order])returns the rank ofnumberwithinref. Tied values share the top rank of their group.orderomitted or0ranks descending, any other value ascending.refcount: text, booleans, empty cells and numeric strings are ignored.#N/Awhennumberis not found among the numeric cells,#VALUE!whennumbercannot be coerced to a number, and propagates an error found inref.MedianPlugin, with a metadata catalogue entry, translations for all built-in languages, and a CHANGELOG entry.Behaviour check against Excel
38 formulas were evaluated in Excel Online (MS Graph live session) and in HyperFormula: 37 identical, 0 different, 1 not evaluable in Excel (an inline array
{1,2,3}as the list, which the Graph API rejects). They cover ties, both orders (0, non-zero, negative, boolean), booleans, text and numeric text in the list, typed numbers (percentage, date and currency cells, which an earlier head of this pull request dropped), an absent number, an emptynumbercell, single-cell and 2D lists, errors in the list, and a text or booleannumber.Numbers are compared exactly, as Excel does for ranking: with
A1 = 0.1+0.2andB1 = 0.3,RANK.EQ(0.3, A1:C1)is 3 in both (measured).COUNTIFandMATCHround and would treat them as equal; the rank functions do not.Translations
Localized names follow the sources listed in DEV_DOCS.md. Where no confirmed localized name was available (cs, fi, hu, id, tr) the English name is kept. The Polish names were additionally checked in Excel.
Tests
Paired tests branch:
feat/hf-419-rank-eqin the tests repository (45 tests). Full local run on this head: 503 suites, 6278 passed, 3 skipped.🤖 Generated with Claude Code
Note
Low Risk
Additive built-in statistical function using the same plugin and licensing patterns as existing rank-adjacent functions; no changes to core engine or security-sensitive paths.
Overview
Adds RANK.EQ and the RANK alias so formulas can rank a value within a range, aligned with Excel-style behavior.
RANK.EQ(number, ref, [order]) is implemented in
MedianPlugin(withLARGE/SMALL). It ranks using only numeric cells inref, gives tied values the same top rank, defaults to descending order whenorderis omitted or0, and returns#N/Awhennumberis not among the numeric values. RANK resolves to RANK.EQ via the plugin alias map.Supporting updates wire the function into the catalog: statistical function metadata, localized names across built-in language packs, inclusion in proprietary license function capabilities, and a CHANGELOG entry.
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