X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Ftt.h;h=6833c67db0b36a2395a859a5033f79b64943e30c;hp=042ccdfedee3b42988c95cba68ca4db5bc061a12;hb=ee8cdb172173a5af199299320d8f385f63efd1f2;hpb=ed2754227a53c38f2570dc92b731c83cf4e0e434

diff --git a/src/tt.h b/src/tt.h
index 042ccdfe..6833c67d 100644
--- a/src/tt.h
+++ b/src/tt.h
@@ -36,12 +36,14 @@
 
 /// The TTEntry class is the class of transposition table entries
 ///
-/// A TTEntry needs 96 bits to be stored
+/// 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: king danger value
 ///
 /// the 32 bits of the data field are so defined
 ///
@@ -108,19 +110,17 @@ public:
   void clear();
   void store(const Key posKey, Value v, ValueType type, Depth d, Move m, Value statV, Value kingD);
   TTEntry* retrieve(const Key posKey) const;
-  void prefetch(const Key posKey) const;
   void new_search();
   void insert_pv(const Position& pos, Move pv[]);
-  void extract_pv(const Position& pos, Move pv[], const int PLY_MAX);
+  void extract_pv(const Position& pos, Move bestMove, Move pv[], const int PLY_MAX);
   int full() const;
+  TTEntry* first_entry(const Key posKey) const;
 
 private:
-  inline TTEntry* first_entry(const Key posKey) const;
-
-  // Be sure 'writes' is at least one cache line away
+  // Be sure 'overwrites' is at least one cache line away
   // from read only variables.
   unsigned char pad_before[64 - sizeof(unsigned)];
-  unsigned writes; // heavy SMP read/write access here
+  unsigned overwrites; // heavy SMP read/write access here
   unsigned char pad_after[64];
 
   size_t size;
@@ -130,4 +130,14 @@ private:
 
 extern TranspositionTable TT;
 
+
+/// TranspositionTable::first_entry returns a pointer to the first
+/// entry of a cluster given a position. The low 32 bits of the key
+/// are used to get the index in the table.
+
+inline TTEntry* TranspositionTable::first_entry(const Key posKey) const {
+
+  return entries[uint32_t(posKey) & (size - 1)].data;
+}
+
 #endif // !defined(TT_H_INCLUDED)