From: Tanner Gooding <tagoo@outlook.com>
Date: Thu, 7 Nov 2019 21:06:32 +0000 (-0800)
Subject: Updating NumberToFloatingPointBitsSlow to handle the remaining parsed fractional... 
X-Git-Tag: submit/tizen/20210909.063632~11030^2~81
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9b296eea53b53a2f67bd626322cc61468e9ad41b;p=platform%2Fupstream%2Fdotnet%2Fruntime.git

Updating NumberToFloatingPointBitsSlow to handle the remaining parsed fractional digits being zero. (dotnet/coreclr#27688)



Commit migrated from https://github.com/dotnet/coreclr/commit/460b97aa406f10cf9ab19e6398e1e1a72fc58b48
---

diff --git a/src/libraries/System.Private.CoreLib/src/System/Number.NumberToFloatingPointBits.cs b/src/libraries/System.Private.CoreLib/src/System/Number.NumberToFloatingPointBits.cs
index 3443622..98ad9f2 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Number.NumberToFloatingPointBits.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Number.NumberToFloatingPointBits.cs
@@ -484,7 +484,16 @@ namespace System
             }
 
             AccumulateDecimalDigitsIntoBigInteger(ref number, fractionalFirstIndex, fractionalLastIndex, out BigInteger fractionalNumerator);
-            Debug.Assert(!fractionalNumerator.IsZero());
+
+            if (fractionalNumerator.IsZero())
+            {
+                return ConvertBigIntegerToFloatingPointBits(
+                    ref integerValue,
+                    in info,
+                    integerBitsOfPrecision,
+                    fractionalDigitsPresent != 0
+                );
+            }
 
             BigInteger.Pow10(fractionalDenominatorExponent, out BigInteger fractionalDenominator);