Quaternion add and sub ops are not SSEd

HandmadeMath.h

@@ -481,8 +481,17 @@ typedef union hmm_quaternion
         
         float W;
     };
+        
+    struct
+    {
+        hmm_vec4 XYZW;
+    };
     
     float Elements[4];
+        
+#if HANDMADE_MATH__USE_SSE
+    _m128 InternalElementsSSE;
+#endif        
 } hmm_quaternion;
 
 typedef int32_t hmm_bool;
@@ -1317,11 +1326,14 @@ HMM_INLINE hmm_quaternion HMM_Quaternion(float X, float Y, float Z, float W)
 {
     hmm_quaternion Result;
 
+#if HANDMADE_MATH__USE_SSE
+    Result.InternalElementsSSE = _mm_setr_ps(X, Y, Z, W);
+#else 
     Result.X = X;
     Result.Y = Y;
     Result.Z = Z;
     Result.W = W;
-
+#endif
     return (Result);
 }
 
@@ -1329,11 +1341,15 @@ HMM_INLINE hmm_quaternion HMM_QuaternionV4(hmm_vec4 Vector)
 {
     hmm_quaternion Result;
 
+#if HANDMADE_MATH__USE_SSE        
+    Result.InternalElementsSSE = _mm_setr_ps(Vector.X, Vector.Y, Vector.Z, Vector.W);    
+#else
     Result.X = Vector.X;
     Result.Y = Vector.Y;
     Result.Z = Vector.Z;
-    Result.W = Vector.W;
-
+    Result.W = Vector.W;    
+#endif        
+        
     return (Result);
 }
 
@@ -1341,11 +1357,14 @@ HMM_INLINE hmm_quaternion HMM_AddQuaternion(hmm_quaternion Left, hmm_quaternion
 {
     hmm_quaternion Result;
 
+#if HANDMADE_MATH__USE_SSE        
+    Result.InternalElementsSSE = _mm_add_ps(Left.InternalElementsSSE, Right.InternalElementsSSE);        
+#else         
     Result.X = Left.X + Right.X;
     Result.Y = Left.Y + Right.Y;
     Result.Z = Left.Z + Right.Z;
     Result.W = Left.W + Right.W;
-
+#endif
     return (Result);
 }
 
@@ -1353,11 +1372,15 @@ HMM_INLINE hmm_quaternion HMM_SubtractQuaternion(hmm_quaternion Left, hmm_quater
 {
     hmm_quaternion Result;
 
+#if HANDMADE_MATH__USE_SSE
+    Result.InternalElementsSSE = _mm_sub_ps(Left.InternalElementsSSE, Right.InternalElementsSSE);
+#else
     Result.X = Left.X - Right.X;
     Result.Y = Left.Y - Right.Y;
     Result.Z = Left.Z - Right.Z;
     Result.W = Left.W - Right.W;
-
+#endif
+        
     return (Result);
 }