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calc: bounded references up to 1,048,576 cells keep their full shape (#1010)

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A reference over 16,384 cells was cut to the sheet's used range when it was
read into an array. Next to a full-size operand the two no longer lined up:
SUMPRODUCT(D3:AZ400*B3:B400,(A3:A400=1)*(D1:AZ1=2)) gave #VALUE!,
D3:AZ400*B3:B400 filled with #N/A, and ROWS, COUNTBLANK and --(r="") lost
the blanks past the data. Excel keeps the reference's size.

Bounded references now keep their full shape up to one column's worth of
cells (1,048,576). References that run to the edge of the sheet (A:A,
A2:A1048576, several whole rows) and larger blocks still stop at the used
range, so whole-column formulas stay fast.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Harrison Booth
2026-10-14 17:36:36 -05:00
co-authored by Claude Opus 5.5
parent d9d09f0baa
commit ced7243234
3 changed files with 63 additions and 6 deletions
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docs/function-parity.md
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@@ -1,6 +1,6 @@
# Function parity: worksheet functions and formulas
> **Last reviewed:** 2026-10-11 · **Last updated:** 2026-10-12 · **Change:** minor (USDOLLAR added as a compatibility function; MIRR, COUNTIF and INDIRECT edge cases match Excel 365) · **Target:** Microsoft Excel (Microsoft 365), Excel for Mac 16.113.4
> **Last reviewed:** 2026-10-11 · **Last updated:** 2026-10-14 · **Change:** minor (bounded references up to 1,048,576 cells keep their full shape in array formulas, #1010) · **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).
@@ -90,7 +90,7 @@ PIVOTBY, REGEXTEST…) are all present.
**~82% ready.** The library is broad and has 96 test functions in `crates/functions` with many
assertions each, but there is no conformance suite against Excel-computed results, and user
reports keep finding edge cases: MIN() with no arguments (#138), COUNTBLANK past the used range
(#137), ROUND at 15 digits and DATE(1900,2,29) (fixed 10-09), SUMIF sum-range sizing (fixed
(#137, and past 16,384 cells #1010, fixed 10-14 for bounded references), ROUND at 15 digits and DATE(1900,2,29) (fixed 10-09), SUMIF sum-range sizing (fixed
10-09). Statistical distributions and financial functions with iterative solvers (RATE, IRR,
XIRR, YIELD) are the highest-risk for last-digit differences.
@@ -108,6 +108,7 @@ workbooks; results checked in as data, not Excel files) and fixing what it finds
| Date | Change | Summary |
|---|---|---|
| 2026-10-14 | minor | Bounded references up to 1,048,576 cells (`D3:AZ400`) keep their full shape instead of stopping at the used range, so `SUMPRODUCT(D3:AZ400*B3:B400,(A3:A400=x)*(D1:AZ1=y))` broadcasts like Excel and `ROWS`, `COUNTBLANK` and `--(r="")` count the blanks; references that run to the edge of the sheet (`A:A`) still stop at the used range (#1010) |
| 2026-10-12 | minor | USDOLLAR added as a Compatibility function (not on Microsoft's list, so the counts don't change); MIRR with no positive flow is -1, COUNTIF's bare `"<="` / `">="` skip empty strings, INDIRECT with `a1` = FALSE gives `#REF!` for A1-style text (#738) |
| 2026-10-11 | minor | TEXT / number formats fixed against Excel-cached results: fraction literals and zero fractions, `0` denominators zero padded, `?` pads the thousands separator, booleans use the text section (226 mismatches → 0 in 352 TEXT cells) |
| 2026-10-11 | minor | Iterative calculation: circular references iterate up to Maximum Iterations / Maximum Change when enabled |