Additional Test

Author: oleibman

CHANGELOG.md

@@ -35,6 +35,7 @@ and this project adheres to [Semantic Versioning](https://semver.org).
 - Copy Styles after insertNewColumnBefore. [Issue #1425](https://github.com/PHPOffice/PhpSpreadsheet/issues/1425) [PR #4468](https://github.com/PHPOffice/PhpSpreadsheet/pull/4468)
 - Xls Writer Treat Hyperlink Starting with # as Internal. [Issue #56](https://github.com/PHPOffice/PhpSpreadsheet/issues/56) [PR #4453](https://github.com/PHPOffice/PhpSpreadsheet/pull/4453)
 - ODS Handling of Ceiling and Floor. [Issue #407](https://github.com/PHPOffice/PhpSpreadsheet/issues/407) [PR #4466](https://github.com/PHPOffice/PhpSpreadsheet/pull/4466)
+- More Precision for Float to String Casts. [Issue #3899](https://github.com/PHPOffice/PhpSpreadsheet/issues/3899) [PR #4479](https://github.com/PHPOffice/PhpSpreadsheet/pull/4479)
 
 ## 2025-04-16 - 4.2.0
 

tests/PhpSpreadsheetTests/FloatImprecisionTest.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpOffice\PhpSpreadsheetTests;
+
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\TestCase;
+
+class FloatImprecisionTest extends TestCase
+{
+    #[DataProvider('providerFloats')]
+    public function testCompareFloats(float $float1, float $float2): void
+    {
+        self::assertSame($float1, $float2);
+    }
+
+    public static function providerFloats(): array
+    {
+        return [
+            [12345.6789, 12345.67890000000079],
+        ];
+    }
+}