-/// A TTEntry needs 128 bits to be stored
-///
-/// bit 0-31: key
-/// bit 32-63: data
-/// bit 64-79: value
-/// bit 80-95: depth
-/// bit 96-111: static value
-/// bit 112-127: margin of static value
-///
-/// the 32 bits of the data field are so defined
-///
-/// bit 0-15: move
-/// bit 16-20: not used
-/// bit 21-22: value type
-/// bit 23-31: generation
-
-class TTEntry {
-
-public:
- void save(uint32_t k, Value v, Bound b, Depth d, Move m, int g) {
-
- key32 = (uint32_t)k;
- move16 = (uint16_t)m;
- bound = (uint8_t)b;
- generation8 = (uint8_t)g;
- valueUpper = (int16_t)(b & BOUND_UPPER ? v : VALUE_NONE);
- depthUpper = (int16_t)(b & BOUND_UPPER ? d : DEPTH_NONE);
- valueLower = (int16_t)(b & BOUND_LOWER ? v : VALUE_NONE);
- depthLower = (int16_t)(b & BOUND_LOWER ? d : DEPTH_NONE);
- }
-
- void update(Value v, Bound b, Depth d, Move m, int g) {
-
- move16 = (uint16_t)m;
- bound |= (uint8_t)b;
- generation8 = (uint8_t)g;
-
- if (b & BOUND_UPPER)
- {
- valueUpper = (int16_t)v;
- depthUpper = (int16_t)d;
- }
-
- if (b & BOUND_LOWER)
- {
- valueLower = (int16_t)v;
- depthLower = (int16_t)d;
- }
- }
-
- void set_generation(int g) { generation8 = (uint8_t)g; }
-
- uint32_t key() const { return key32; }
- Depth depth() const { return (Depth)depthLower; }
- Depth depth_upper() const { return (Depth)depthUpper; }
- Move move() const { return (Move)move16; }
- Value value() const { return (Value)valueLower; }
- Value value_upper() const { return (Value)valueUpper; }
- Bound type() const { return (Bound)bound; }
- int generation() const { return (int)generation8; }
+/// key 16 bit
+/// depth 8 bit
+/// generation 5 bit
+/// pv node 1 bit
+/// bound type 2 bit
+/// move 16 bit
+/// value 16 bit
+/// eval value 16 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 + DEPTH_OFFSET; }
+ bool is_pv() const { return (bool)(genBound8 & 0x4); }
+ Bound bound() const { return (Bound)(genBound8 & 0x3); }
+ void save(Key k, Value v, bool pv, Bound b, Depth d, Move m, Value ev);