CENTER=0,
SMALLER=-1,
BIGGER=1,
+ START = -1,
+ STOP = 1
};
inline Direction
if d > 0: the max operator
if d < 0: the min operator
*/
-template<class T> minmax (Direction d, T, T);
+template<class T> T minmax (Direction d, T, T);
String direction_str (Direction, Axis);