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Introduce init_attack_tables() in evaluate()

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No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2010-05-15 13:29:21 +01:00
parent 0d207ec2c6
commit 6181e01c2a
1 changed files with 23 additions and 17 deletions
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40
src/evaluate.cpp
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@ -242,6 +242,9 @@ namespace {
template<bool HasPopCnt>
Value do_evaluate(const Position& pos, EvalInfo& ei, int threadID);
template<Color Us, bool HasPopCnt>
void init_attack_tables(const Position& pos, EvalInfo& ei);
template<Color Us, bool HasPopCnt>
void evaluate_pieces_of_color(const Position& pos, EvalInfo& ei);
@ -285,7 +288,6 @@ namespace {
template<bool HasPopCnt>
Value do_evaluate(const Position& pos, EvalInfo& ei, int threadID) {
Bitboard b;
ScaleFactor factor[2];
assert(pos.is_ok());
@ -315,22 +317,9 @@ Value do_evaluate(const Position& pos, EvalInfo& ei, int threadID) {
ei.pi = PawnTable[threadID]->get_pawn_info(pos);
ei.value += apply_weight(ei.pi->pawns_value(), Weights[PawnStructure]);
// Initialize king attack bitboards and king attack zones for both sides
ei.attackedBy[WHITE][KING] = pos.attacks_from<KING>(pos.king_square(WHITE));
ei.attackedBy[BLACK][KING] = pos.attacks_from<KING>(pos.king_square(BLACK));
ei.kingZone[WHITE] = ei.attackedBy[BLACK][KING] | (ei.attackedBy[BLACK][KING] >> 8);
ei.kingZone[BLACK] = ei.attackedBy[WHITE][KING] | (ei.attackedBy[WHITE][KING] << 8);
// Initialize pawn attack bitboards for both sides
ei.attackedBy[WHITE][PAWN] = ei.pi->pawn_attacks(WHITE);
b = ei.attackedBy[WHITE][PAWN] & ei.attackedBy[BLACK][KING];
if (b)
ei.kingAttackersCount[WHITE] = count_1s_max_15<HasPopCnt>(b)/2;
ei.attackedBy[BLACK][PAWN] = ei.pi->pawn_attacks(BLACK);
b = ei.attackedBy[BLACK][PAWN] & ei.attackedBy[WHITE][KING];
if (b)
ei.kingAttackersCount[BLACK] = count_1s_max_15<HasPopCnt>(b)/2;
// Initialize attack bitboards with pawns evaluation
init_attack_tables<WHITE, HasPopCnt>(pos, ei);
init_attack_tables<BLACK, HasPopCnt>(pos, ei);
// Evaluate pieces
evaluate_pieces_of_color<WHITE, HasPopCnt>(pos, ei);
@ -481,6 +470,23 @@ void read_weights(Color us) {
namespace {
// init_king_tables() initializes king bitboards for both sides adding
// pawn attacks. To be done before other evaluations.
template<Color Us, bool HasPopCnt>
void init_attack_tables(const Position& pos, EvalInfo& ei) {
const Color Them = (Us == WHITE ? BLACK : WHITE);
Bitboard b = ei.attackedBy[Them][KING] = pos.attacks_from<KING>(pos.king_square(Them));
ei.kingZone[Us] = (b | (Us == WHITE ? b >> 8 : b << 8));
ei.attackedBy[Us][PAWN] = ei.pi->pawn_attacks(Us);
b &= ei.attackedBy[Us][PAWN];
if (b)
ei.kingAttackersCount[Us] = count_1s_max_15<HasPopCnt>(b) / 2;
}
// evaluate_outposts() evaluates bishop and knight outposts squares
template<PieceType Piece, Color Us>