-/// bit 0-63: key
-/// bit 64-95: data
-/// bit 96-111: value
-/// bit 112-127: depth
-///
-/// the 32 bits of the data field are so defined
-///
-/// bit 0-16: move
-/// bit 17: stored value equals static value
-/// bit 18-19: not used
-/// bit 20-22: value type
-/// bit 23-31: generation
-
-class TTEntry {
-
-public:
- TTEntry();
- TTEntry(Key k, Value v, ValueType t, Depth d, Move m, int generation);
- Key key() const { return key_; }
- Depth depth() const { return Depth(depth_); }
- Move move() const { return Move(data & 0x1FFFF); }
- Value value() const { return Value(value_); }
- ValueType type() const { return ValueType((data >> 20) & 7); }
- int generation() const { return (data >> 23); }
- bool staticValue() const { return ((data >> 17) & 1); }
- void setStaticValue() { data |= (1 << 17); }
+/// key 16 bit
+/// move 16 bit
+/// value 16 bit
+/// eval value 16 bit
+/// generation 6 bit
+/// bound type 2 bit
+/// depth 8 bit
+
+struct TTEntry {
+
+ Move move() const { return (Move )move16; }
+ Value value() const { return (Value)value16; }
+ Value eval() const { return (Value)eval16; }
+ Depth depth() const { return (Depth)(depth8 * int(ONE_PLY)); }
+ Bound bound() const { return (Bound)(genBound8 & 0x3); }
+ void save(Key k, Value v, Bound b, Depth d, Move m, Value ev);