 
         typedef char4 read_type;
         typedef char4 write_type;
-    };    
+    };
     template <typename T, typename DT>
     struct ReadWriteTraits<T, DT, 2, 1>
     {


        typedef int4 read_type;
        typedef char4 write_type;
    };    
    template <typename T, typename DT>
    struct ReadWriteTraits<T, DT, 1, 2>
    {


        typedef short4 read_type;
        typedef char4 write_type;
    };
    template <typename T, typename DT>
    struct ReadWriteTraits<T, DT, 4, 1>
    {
