diff --git a/detect.cc b/detect.cc
index 8628718..5b4d909 100644
--- a/detect.cc
+++ b/detect.cc
@@ -243,12 +243,13 @@ void Detect::InputDetect(int *posx, int *posy) {
 }
 
 inline float calc_vector(uint8_t a1, uint8_t a2, uint8_t b1, uint8_t b2, uint8_t c1, uint8_t c2, uint8_t d1, uint8_t d2) {
-  return (float) (a1 * a2 + b1 * b2 + c1 * c2 + d1 * d2);
-  // __m64 m1 = _mm_set_pi16 (a1, b1, c1, d1 );
-  // __m64 m2 = _mm_set_pi16 (a2, b2, c2, d2 );
+  return a1 * a2 + b1 * b2 + c1 * c2 + d1 * d2;
+  // __m64 m1 = _mm_set_pi16 (a1, b1, c1, d1);
+  // __m64 m2 = _mm_set_pi16 (a2, b2, c2, d2);
   // __m64 m3 = _mm_madd_pi16 (m1, m2);
+  // _mm_empty ();
   // uint32_t *data = (uint32_t *) &m3;
-  // return (float) (data[0] + data[1]);
+  // return data[0] + data[1];
 }
 
 #define OBJSIZE 50