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Convert pieceSquareTable to 3 dimensions

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No functional change.
This commit is contained in:
Marco Costalba 2013-06-09 13:05:41 +02:00
parent dd1855eb2f
commit 81e242a96d
3 changed files with 14 additions and 19 deletions
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27
src/position.cpp
View file

@ -41,7 +41,7 @@ static const string PieceToChar(" PNBRQK pnbrqk");
CACHE_LINE_ALIGNMENT
Score pieceSquareTable[PIECE_NB][SQUARE_NB];
Score pieceSquareTable[COLOR_NB][PIECE_TYPE_NB][SQUARE_NB];
Value PieceValue[PHASE_NB][PIECE_NB] = {
{ VALUE_ZERO, PawnValueMg, KnightValueMg, BishopValueMg, RookValueMg, QueenValueMg },
{ VALUE_ZERO, PawnValueEg, KnightValueEg, BishopValueEg, RookValueEg, QueenValueEg } };
@ -85,17 +85,17 @@ void init() {
side = rk.rand<Key>();
exclusion = rk.rand<Key>();
for (Piece pc = W_PAWN; pc <= W_KING; pc++)
for (PieceType pt = PAWN; pt <= KING; pt++)
{
PieceValue[MG][~pc] = PieceValue[MG][pc];
PieceValue[EG][~pc] = PieceValue[EG][pc];
PieceValue[MG][make_piece(BLACK, pt)] = PieceValue[MG][pt];
PieceValue[EG][make_piece(BLACK, pt)] = PieceValue[EG][pt];
Score v = make_score(PieceValue[MG][pc], PieceValue[EG][pc]);
Score v = make_score(PieceValue[MG][pt], PieceValue[EG][pt]);
for (Square s = SQ_A1; s <= SQ_H8; s++)
{
pieceSquareTable[ pc][ s] = (v + PSQT[pc][s]);
pieceSquareTable[~pc][~s] = -(v + PSQT[pc][s]);
pieceSquareTable[WHITE][pt][ s] = (v + PSQT[pt][s]);
pieceSquareTable[BLACK][pt][~s] = -(v + PSQT[pt][s]);
}
}
}
@ -767,9 +767,8 @@ void Position::do_move(Move m, StateInfo& newSt, const CheckInfo& ci, bool moveI
do_castle(from, to, rfrom, rto);
st->psqScore += pieceSquareTable[us][ROOK][rto] - pieceSquareTable[us][ROOK][rfrom];
k ^= Zobrist::psq[us][ROOK][rfrom] ^ Zobrist::psq[us][ROOK][rto];
st->psqScore += pieceSquareTable[make_piece(us, ROOK)][rto]
- pieceSquareTable[make_piece(us, ROOK)][rfrom];
}
if (capture)
@ -821,7 +820,7 @@ void Position::do_move(Move m, StateInfo& newSt, const CheckInfo& ci, bool moveI
prefetch((char*)thisThread->materialTable[st->materialKey]);
// Update incremental scores
st->psqScore -= pieceSquareTable[make_piece(them, capture)][capsq];
st->psqScore -= pieceSquareTable[them][capture][capsq];
// Reset rule 50 counter
st->rule50 = 0;
@ -904,8 +903,7 @@ void Position::do_move(Move m, StateInfo& newSt, const CheckInfo& ci, bool moveI
^ Zobrist::psq[us][PAWN][pieceCount[us][PAWN]];
// Update incremental score
st->psqScore += pieceSquareTable[make_piece(us, promotion)][to]
- pieceSquareTable[make_piece(us, PAWN)][to];
st->psqScore += pieceSquareTable[us][promotion][to] - pieceSquareTable[us][PAWN][to];
// Update material
st->npMaterial[us] += PieceValue[MG][promotion];
@ -920,7 +918,7 @@ void Position::do_move(Move m, StateInfo& newSt, const CheckInfo& ci, bool moveI
}
// Update incremental scores
st->psqScore += pieceSquareTable[pc][to] - pieceSquareTable[pc][from];
st->psqScore += pieceSquareTable[us][pt][to] - pieceSquareTable[us][pt][from];
// Set capture piece
st->capturedType = capture;
@ -1351,7 +1349,8 @@ Score Position::compute_psq_score() const {
for (Bitboard b = pieces(); b; )
{
Square s = pop_lsb(&b);
score += pieceSquareTable[piece_on(s)][s];
Piece pc = piece_on(s);
score += pieceSquareTable[color_of(pc)][type_of(pc)][s];
}
return score;

2
src/psqtab.h
View file

@ -25,7 +25,7 @@
#define S(mg, eg) make_score(mg, eg)
/// PSQT[Piece][Square] contains Piece-Square scores. For each piece type on
/// PSQT[PieceType][Square] contains Piece-Square scores. For each piece type on
/// a given square a (midgame, endgame) score pair is assigned. PSQT is defined
/// for white side, for black side the tables are symmetric.

4
src/types.h
View file

@ -359,10 +359,6 @@ inline Square operator~(Square s) {
return Square(s ^ 56); // Vertical flip SQ_A1 -> SQ_A8
}
inline Piece operator~(Piece c) {
return Piece(c ^ 8);
}
inline Square operator|(File f, Rank r) {
return Square((r << 3) | f);
}