-////
-//// Inline functions
-////
-
-inline Square pawn_push(Color c) {
- return c == WHITE ? DELTA_N : DELTA_S;
-}
-
-inline void PawnInfoTable::prefetch(Key key) const {
-
- unsigned index = unsigned(key & (PawnTableSize - 1));
- PawnInfo* pi = entries + index;
- ::prefetch((char*) pi);
-}
-
-inline Score PawnInfo::pawns_value() const {
- return value;
-}
-
-inline Bitboard PawnInfo::pawn_attacks(Color c) const {
- return pawnAttacks[c];
-}
-
-inline Bitboard PawnInfo::passed_pawns(Color c) const {
- return passedPawns[c];
-}
-
-inline int PawnInfo::file_is_half_open(Color c, File f) const {
- return (halfOpenFiles[c] & (1 << int(f)));
-}
-
-inline int PawnInfo::has_open_file_to_left(Color c, File f) const {
- return halfOpenFiles[c] & ((1 << int(f)) - 1);
-}
-
-inline int PawnInfo::has_open_file_to_right(Color c, File f) const {
- return halfOpenFiles[c] & ~((1 << int(f+1)) - 1);
-}
-
-/// PawnInfo::updateShelter() calculates and caches king shelter. It is called
-/// only when king square changes, about 20% of total king_shelter() calls.
-template<Color Us>
-Score PawnInfo::updateShelter(const Position& pos, Square ksq) {
-
- const int Shift = (Us == WHITE ? 8 : -8);
-
- Bitboard pawns;
- int r, shelter = 0;
-
- if (relative_rank(Us, ksq) <= RANK_4)
- {
- pawns = pos.pieces(PAWN, Us) & this_and_neighboring_files_bb(ksq);
- r = square_rank(ksq) * 8;
- for (int i = 1; i < 4; i++)
- {
- r += Shift;
- shelter += BitCount8Bit[(pawns >> r) & 0xFF] * (128 >> i);
- }
- }
- kingSquares[Us] = ksq;
- kingShelters[Us] = make_score(shelter, 0);
- return kingShelters[Us];
-}