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Functions: BAHTTEXT (#291)

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Thai number words with บาท / สตางค์ / ถ้วน, rounded to satang, ล้าน
repeating per six digits, ลบ for negatives.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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vangel76
2026-10-11 12:07:41 +02:00
co-authored by Claude Opus 5.5
parent 9f896c1249
commit 35d6c23fd1
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docs/function-parity.md
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# Function parity: worksheet functions and formulas
> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-10 · **Change:** major (created; measured against Microsoft's published Excel function list) · **Target:** Microsoft Excel (Microsoft 365), Excel for Mac 16.113.4
> **Last reviewed:** 2026-10-11 · **Last updated:** 2026-10-11 · **Change:** minor (BAHTTEXT added) · **Target:** Microsoft Excel (Microsoft 365), Excel for Mac 16.113.4
Excel's worksheet functions, category by category, against GridCraft's function library. Part of
[target-app-parity.md](target-app-parity.md); gaps feed [gaps.md](gaps.md).
@@ -12,7 +12,7 @@ Excel's worksheet functions, category by category, against GridCraft's function
them), plus 14 text functions the page lists under combined entries (FIND/FINDB, LEFT/LEFTB,
LEN/LENB, MID/MIDB, REPLACE/REPLACEB, RIGHT/RIGHTB, SEARCH/SEARCHB), BETA.INV, and COPILOT and
PY (Microsoft 365 functions not on that page when fetched).
- **Ours (501):** every function spec in `crates/functions/src/*.rs` (`f!("NAME", …)`) plus the
- **Ours (502):** every function spec in `crates/functions/src/*.rs` (`f!("NAME", …)`) plus the
evaluator's special forms in `crates/calc/src/eval.rs` (`SPECIAL_FUNCTIONS`: IF, IFS, CHOOSE,
OFFSET, INDIRECT, INDEX, SUBTOTAL, AGGREGATE, TEXT, LET, LAMBDA, MAP, REDUCE, SCAN, BYROW, BYCOL,
MAKEARRAY…), excluding the test-only `ADD2`. Every one is an Excel name.
@@ -23,7 +23,7 @@ Excel's worksheet functions, category by category, against GridCraft's function
## Coverage
**Measured: 501 / 523 by name (95.8%); 492 / 523 working (94.1%).**
**Measured: 502 / 523 by name (96.0%); 493 / 523 working (94.3%).**
| Category | Excel | Ours | Working | % working | Missing |
|---|---|---|---|---|---|
@@ -31,7 +31,7 @@ Excel's worksheet functions, category by category, against GridCraft's function
| Math and trigonometry | 80 | 79 | 79 | 99% | PERCENTOF |
| Financial | 55 | 51 | 51 | 93% | ODDFPRICE, ODDFYIELD, ODDLPRICE, ODDLYIELD |
| Engineering | 54 | 54 | 54 | 100% | — |
| Text | 50 | 47 | 47 | 94% | BAHTTEXT, DETECTLANGUAGE, TRANSLATE |
| Text | 50 | 48 | 48 | 96% | DETECTLANGUAGE, TRANSLATE |
| Lookup and reference | 40 | 36 | 36 | 90% | GETPIVOTDATA, IMAGE, RTD, TRIMRANGE |
| Compatibility | 40 | 40 | 40 | 100% | — |
| Date and time | 25 | 25 | 25 | 100% | — |
@@ -42,9 +42,9 @@ Excel's worksheet functions, category by category, against GridCraft's function
| Web | 3 | 3 | 1 | 33% | (WEBSERVICE, FILTERXML are stubs; ENCODEURL works) |
| Add-in and Automation | 3 | 0 | 0 | 0% | CALL, EUROCONVERT, REGISTER.ID |
| AI and Python | 2 | 0 | 0 | 0% | COPILOT, PY |
| **Total** | **523** | **501** | **492** | **94.1%** | 22 missing, 9 stubs |
| **Total** | **523** | **502** | **493** | **94.3%** | 21 missing, 9 stubs |
By the Excel version that introduced them (working / total): before 2010 342 / 360, 2010
By the Excel version that introduced them (working / total): before 2010 343 / 360, 2010
56 / 56, 2013 49 / 51, 2016 1 / 5, 2019 6 / 6, 2021 11 / 11, 2024 22 / 23, Microsoft 365 5 / 11.
Dynamic-array and LAMBDA-era functions (FILTER, SORT, UNIQUE, XLOOKUP, VSTACK, TAKE, GROUPBY,
PIVOTBY, REGEXTEST…) are all present.
@@ -56,7 +56,7 @@ PIVOTBY, REGEXTEST…) are all present.
| FORECAST.ETS family (4) | yes | 4–6 h | AAA exponential smoothing with seasonality detection; needed for Forecast Sheet too |
| ODDFPRICE, ODDFYIELD, ODDLPRICE, ODDLYIELD | yes | 2–4 h | Odd first/last period bond maths |
| GETPIVOTDATA | yes | 2–3 h | Needs the pivot engine's result cache; also the "Generate GetPivotData" option |
| TRIMRANGE, PERCENTOF, BAHTTEXT | yes | 1–2 h | TRIMRANGE also implies the `.:` trim-ref operators |
| TRIMRANGE, PERCENTOF | yes | 1–2 h | TRIMRANGE also implies the `.:` trim-ref operators |
| IMAGE | yes | 3–5 h | Pictures in cells (see PR #105); fetching URLs needs a privacy decision |
| EUROCONVERT | yes | 0.5 h | Fixed conversion table |
| CUBE* (7), WEBSERVICE, FILTERXML | partly | 4–8 h | FILTERXML can work offline; CUBE needs an OLAP/data-model source |
@@ -97,4 +97,5 @@ workbooks; results checked in as data, not Excel files) and fixing what it finds
| Date | Change | Summary |
|---|---|---|
| 2026-10-11 | minor | BAHTTEXT added: 502 / 523 by name, 493 working |
| 2026-10-10 | major | Created: 501 / 523 by name, 492 working, per category, against Microsoft's published list |