1 files changed, 5 insertions, 1 deletions
diff --git a/ChocolArm64/ABitUtils.cs b/ChocolArm64/ABitUtils.cs
index 357dd45d..dd416235 100644
--- a/ChocolArm64/ABitUtils.cs
+++ b/ChocolArm64/ABitUtils.cs
@@ -27,6 +27,10 @@ namespace ChocolArm64
             return -1;
         }
 
+        private static readonly sbyte[] HbsNibbleTbl = { -1, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3 };
+
+        public static int HighestBitSetNibble(int Value) => HbsNibbleTbl[Value & 0b1111];
+
         public static long Replicate(long Bits, int Size)
         {
             long Output = 0;
@@ -54,4 +58,4 @@ namespace ChocolArm64
             return Value != 0 && (Value & (Value - 1)) == 0;
         }
     }
-}
-\ No newline at end of file
+}