public static long cvttss_si64(m128 a)
 {
     using (var csr = new RoundingScope(MXCSRBits.RoundTowardZero))
     {
         return((long)a.Float0);
     }
 }
 public static int cvttss_si32(m128 a)
 {
     using (var csr = new RoundingScope(MXCSRBits.RoundTowardZero))
     {
         return((int)a.Float0);
     }
 }