Some cleanup of the System.Number class (#20619)

* Formatting Number.Formatting.cs and Number.Parsing.cs

* Removing some duplicated parsing code by having the Parse method call TryParse

* Moving two constants from NumberBuffer to Dragon4

* Rename FloatPrecision to SinglePrecision

* Updating the casing of the NumberBuffer fields

* Updating NumberBuffer to allow taking a custom-sized digit buffer.

* Updating the various NumberBufferLength constants to be the exact needed lengths

* Fixing DoubleNumberBufferLength and SingleNumberBufferLength to account for the rounding digit.

* Fixing TryParseNumber to use the correct maxDigCount

* Ensure the TryParseSingle out result is assigned on success

1 files changed, 1 insertions, 22 deletions

diff --git a/src/System.Private.CoreLib/shared/System/Single.cs b/src/System.Private.CoreLib/shared/System/Single.cs
index 8d1788f731..dfe1af3f8c 100644
--- a/src/System.Private.CoreLib/shared/System/Single.cs
+++ b/src/System.Private.CoreLib/shared/System/Single.cs
@@ -330,28 +330,7 @@ namespace System
 
         private static bool TryParse(ReadOnlySpan<char> s, NumberStyles style, NumberFormatInfo info, out float result)
         {
-            bool success = Number.TryParseSingle(s, style, info, out result);
-            if (!success)
-            {
-                ReadOnlySpan<char> sTrim = s.Trim();
-                if (sTrim.EqualsOrdinal(info.PositiveInfinitySymbol))
-                {
-                    result = PositiveInfinity;
-                }
-                else if (sTrim.EqualsOrdinal(info.NegativeInfinitySymbol))
-                {
-                    result = NegativeInfinity;
-                }
-                else if (sTrim.EqualsOrdinal(info.NaNSymbol))
-                {
-                    result = NaN;
-                }
-                else
-                {
-                    return false; // We really failed
-                }
-            }
-            return true;
+            return Number.TryParseSingle(s, style, info, out result, out _);
         }
 
         //