From dbf30716645dbfb04c14d62ca329eefdcd94a4d7 Mon Sep 17 00:00:00 2001
From: clodan <clodan@clodan.com>
Date: Wed, 29 Jan 2025 13:30:52 +0000
Subject: [PATCH] Improved precision for smaller decimals

---
 Libraries/Core/Utils/RandomUtil.cs       | 5 +++--
 UnitTests/Tests/Utils/RandomUtilTests.cs | 2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/Libraries/Core/Utils/RandomUtil.cs b/Libraries/Core/Utils/RandomUtil.cs
index 06a8cd9d..feb3338b 100644
--- a/Libraries/Core/Utils/RandomUtil.cs
+++ b/Libraries/Core/Utils/RandomUtil.cs
@@ -414,10 +414,11 @@ public class RandomUtil(ISptLogger<RandomUtil> _logger, ICloner _cloner)
     /// <returns>The number of decimal places, or 0 if none exist.</returns>
     public int GetNumberPrecision(double num)
     {
+        var preciseNum = (decimal)num;
         var factor = 0;
-        while (num % 1 > double.Epsilon)
+        while ((double)(preciseNum % 1) > double.Epsilon)
         {
-            num *= 10D;
+            preciseNum *= 10M;
             factor++;
         }
         return factor;
diff --git a/UnitTests/Tests/Utils/RandomUtilTests.cs b/UnitTests/Tests/Utils/RandomUtilTests.cs
index 2a52e541..51d0f4b1 100644
--- a/UnitTests/Tests/Utils/RandomUtilTests.cs
+++ b/UnitTests/Tests/Utils/RandomUtilTests.cs
@@ -188,7 +188,7 @@ public sealed class RandomUtilTests
     [DataRow(0.0001, 4)]
     [DataRow(0, 0)]
     [DataRow(10000000, 0)]
-    [DataRow(0.000_000_000_000_1D, 13)]
+    [DataRow(0.000_000_000_000_000_000_000_000_1D, 25)]
     public void GetNumberPrecision_WithDoubles_ReturnsDecimalPoints(double value, int decimalPoints)
     {
         Assert.AreEqual(decimalPoints, _randomUtil.GetNumberPrecision(value));