From c44dc8c08f4c19f34af6c29820339d1558827ee8 Mon Sep 17 00:00:00 2001
From: "Adrien Minne (adrm)" <adrm@odoo.com>
Date: Thu, 26 Mar 2026 10:07:36 +0100
Subject: [PATCH] [FIX] format: don't humanize scientific format

The methods trying to humanize a format (in charts, and in
`FORMAT.LARGE.NUMBER`) were displaying strange results when
used with scientific formats (eg. `0ke+4` instead of either `50k` or
`5e+4`).

Task: 6068353
---
 src/helpers/format/format.ts          |  2 +-
 tests/functions/module_custom.test.ts | 13 ++++++++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/helpers/format/format.ts b/src/helpers/format/format.ts
index 448752e9d8..4c57770c96 100644
--- a/src/helpers/format/format.ts
+++ b/src/helpers/format/format.ts
@@ -800,7 +800,7 @@ function _createLargeNumberFormat<T extends InternalFormat>(
   magnitude: number,
   postFix: string
 ): T {
-  if (format.type !== "number") {
+  if (format.type !== "number" || format.scientific) {
     return format;
   }
 
diff --git a/tests/functions/module_custom.test.ts b/tests/functions/module_custom.test.ts
index 871472939f..906753d4a9 100644
--- a/tests/functions/module_custom.test.ts
+++ b/tests/functions/module_custom.test.ts
@@ -1,6 +1,6 @@
 import { Model } from "../../src";
 import { setCellContent, setCellFormat, setFormat } from "../test_helpers/commands_helpers";
-import { getCellContent, getCellError } from "../test_helpers/getters_helpers";
+import { getCellContent, getCellError, getEvaluatedCell } from "../test_helpers/getters_helpers";
 import { evaluateCellText } from "../test_helpers/helpers";
 
 describe("FORMAT.LARGE.NUMBER formula", () => {
@@ -171,6 +171,17 @@ describe("FORMAT.LARGE.NUMBER formula", () => {
     expect(getCellContent(model, "A2")).toBe("5,000m");
   });
 
+  test("FORMAT.LARGE.NUMBER does nothing on numbers with scientific format", () => {
+    const model = new Model();
+    setCellContent(model, "A1", "100000");
+    setFormat(model, "A1", "0e");
+    setCellContent(model, "A2", "=FORMAT.LARGE.NUMBER(A1)");
+    expect(getCellContent(model, "A2")).toBe("1e+05");
+
+    setFormat(model, "A1", "0;0e;-0e;@[$Hello]");
+    expect(getEvaluatedCell(model, "A2").format).toBe("0,[$k];0e;-0e;@[$Hello]");
+  });
+
   test("Percentage in decimal part is preserved by FORMAT.LARGE.NUMBER", () => {
     const model = new Model();
     setCellContent(model, "A1", "100000");