diff --git a/src/DotRecast.Detour/DtStatus.cs b/src/DotRecast.Detour/DtStatus.cs
index be9e059..63a2797 100644
--- a/src/DotRecast.Detour/DtStatus.cs
+++ b/src/DotRecast.Detour/DtStatus.cs
@@ -18,6 +18,8 @@ freely, subject to the following restrictions:
 3. This notice may not be removed or altered from any source distribution.
 */
 
+using System.Runtime.CompilerServices;
+
 namespace DotRecast.Detour
 {
     public class DtStatus
@@ -45,5 +47,29 @@ namespace DotRecast.Detour
         {
             Value = value;
         }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public bool IsSuccess()
+        {
+            return 0 != (Value & (DT_SUCCSESS.Value | DT_PARTIAL_RESULT.Value));
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public bool IsFailed()
+        {
+            return 0 != (Value & (DT_FAILURE.Value | DT_INVALID_PARAM.Value));
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public bool IsInProgress()
+        {
+            return 0 != (Value & DT_IN_PROGRESS.Value);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public bool IsPartial()
+        {
+            return 0 != (Value & DT_PARTIAL_RESULT.Value);
+        }
     }
 }
\ No newline at end of file
diff --git a/src/DotRecast.Detour/DtStatusExtension.cs b/src/DotRecast.Detour/DtStatusExtension.cs
deleted file mode 100644
index 8d0da09..0000000
--- a/src/DotRecast.Detour/DtStatusExtension.cs
+++ /dev/null
@@ -1,25 +0,0 @@
-namespace DotRecast.Detour
-{
-    public static class DtStatusExtension
-    {
-        public static bool IsSuccess(this DtStatus @this)
-        {
-            return @this == DtStatus.DT_SUCCSESS || @this == DtStatus.DT_PARTIAL_RESULT;
-        }
-        
-        public static bool IsFailed(this DtStatus @this)
-        {
-            return @this == DtStatus.DT_FAILURE || @this == DtStatus.DT_INVALID_PARAM;
-        }
-
-        public static bool IsInProgress(this DtStatus @this)
-        {
-            return @this == DtStatus.DT_IN_PROGRESS;
-        }
-
-        public static bool IsPartial(this DtStatus @this)
-        {
-            return @this == DtStatus.DT_PARTIAL_RESULT;
-        }
-    }
-}
\ No newline at end of file