X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fposition.cpp;h=918d50e505e0d1e9ab8cb4b5b15f11c6d38d81ec;hp=b00bda24b0596b56a4661a315cfebc2e6c0195e0;hb=8a7876d48d4360d14d918c1ff444b5d6eb0382de;hpb=a1b62d68ec59aae504a9e39bfd3a7dfa4a831d29

diff --git a/src/position.cpp b/src/position.cpp
index b00bda24..918d50e5 100644
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -25,25 +25,21 @@
 
 #include "bitcount.h"
 #include "movegen.h"
-#include "notation.h"
 #include "position.h"
 #include "psqtab.h"
 #include "rkiss.h"
 #include "thread.h"
 #include "tt.h"
+#include "uci.h"
 
 using std::string;
 
-static const string PieceToChar(" PNBRQK  pnbrqk");
-
 CACHE_LINE_ALIGNMENT
 
 Value PieceValue[PHASE_NB][PIECE_NB] = {
 { VALUE_ZERO, PawnValueMg, KnightValueMg, BishopValueMg, RookValueMg, QueenValueMg },
 { VALUE_ZERO, PawnValueEg, KnightValueEg, BishopValueEg, RookValueEg, QueenValueEg } };
 
-static Score psq[COLOR_NB][PIECE_TYPE_NB][SQUARE_NB];
-
 namespace Zobrist {
 
   Key psq[COLOR_NB][PIECE_TYPE_NB][SQUARE_NB];
@@ -57,6 +53,9 @@ Key Position::exclusion_key() const { return st->key ^ Zobrist::exclusion;}
 
 namespace {
 
+const string PieceToChar(" PNBRQK  pnbrqk");
+Score psq[COLOR_NB][PIECE_TYPE_NB][SQUARE_NB];
+
 // min_attacker() is a helper function used by see() to locate the least
 // valuable attacker for the side to move, remove the attacker we just found
 // from the bitboards and scan for new X-ray attacks behind it.
@@ -409,21 +408,21 @@ const string Position::fen() const {
   ss << (sideToMove == WHITE ? " w " : " b ");
 
   if (can_castle(WHITE_OO))
-      ss << (chess960 ? to_char(file_of(castling_rook_square(WHITE |  KING_SIDE)), false) : 'K');
+      ss << (chess960 ? 'A' + file_of(castling_rook_square(WHITE |  KING_SIDE)) : 'K');
 
   if (can_castle(WHITE_OOO))
-      ss << (chess960 ? to_char(file_of(castling_rook_square(WHITE | QUEEN_SIDE)), false) : 'Q');
+      ss << (chess960 ? 'A' + file_of(castling_rook_square(WHITE | QUEEN_SIDE)) : 'Q');
 
   if (can_castle(BLACK_OO))
-      ss << (chess960 ? to_char(file_of(castling_rook_square(BLACK |  KING_SIDE)),  true) : 'k');
+      ss << (chess960 ? 'a' + file_of(castling_rook_square(BLACK |  KING_SIDE)) : 'k');
 
   if (can_castle(BLACK_OOO))
-      ss << (chess960 ? to_char(file_of(castling_rook_square(BLACK | QUEEN_SIDE)),  true) : 'q');
+      ss << (chess960 ? 'a' + file_of(castling_rook_square(BLACK | QUEEN_SIDE)) : 'q');
 
   if (!can_castle(WHITE) && !can_castle(BLACK))
       ss << '-';
 
-  ss << (ep_square() == SQ_NONE ? " - " : " " + to_string(ep_square()) + " ")
+  ss << (ep_square() == SQ_NONE ? " - " : " " + UCI::format_square(ep_square()) + " ")
      << st->rule50 << " " << 1 + (gamePly - (sideToMove == BLACK)) / 2;
 
   return ss.str();
@@ -450,7 +449,7 @@ const string Position::pretty() const {
      << std::setfill('0') << std::setw(16) << st->key << "\nCheckers: ";
 
   for (Bitboard b = checkers(); b; )
-      ss << to_string(pop_lsb(&b)) << " ";
+      ss << UCI::format_square(pop_lsb(&b)) << " ";
 
   return ss.str();
 }
@@ -807,9 +806,6 @@ void Position::do_move(Move m, StateInfo& newSt, const CheckInfo& ci, bool moveI
       st->castlingRights &= ~cr;
   }
 
-  // Prefetch TT access as soon as we know the new hash key
-  prefetch((char*)TT.first_entry(k));
-
   // Move the piece. The tricky Chess960 castling is handled earlier
   if (type_of(m) != CASTLING)
       move_piece(from, to, us, pt);
@@ -1016,6 +1012,26 @@ void Position::undo_null_move() {
 }
 
 
+/// Position::key_after() computes the new hash key after the given moven. Needed
+/// for speculative prefetch. It doesn't recognize special moves like castling,
+/// en-passant and promotions.
+
+Key Position::key_after(Move m) const {
+
+  Color us = sideToMove;
+  Square from = from_sq(m);
+  Square to = to_sq(m);
+  PieceType pt = type_of(piece_on(from));
+  PieceType captured = type_of(piece_on(to));
+  Key k = st->key ^ Zobrist::side;
+
+  if (captured)
+      k ^= Zobrist::psq[~us][captured][to];
+
+  return k ^ Zobrist::psq[us][pt][to] ^ Zobrist::psq[us][pt][from];
+}
+
+
 /// Position::see() is a static exchange evaluator: It tries to estimate the
 /// material gain or loss resulting from a move.