force_inline
static move *generate_rook_moves(uint64_t rooks, const uint64_t occupied, const uint64_t targets, move *moves) {
int from;
int to;
uint64_t posmoves;
while (rooks) {
from = lsb(rooks);
posmoves = rook_attacks(from, occupied) & targets;
while (posmoves) {
to = lsb(posmoves);
*moves++ = MOVE(from, to);
clear_lsb(posmoves);
}
clear_lsb(rooks);
}
return moves;
}
BITBOARD attacks_to_square(struct board_t *brd,short sq)
{
BITBOARD bq,rq,kings;
bq=brd->pcs[WHITE][BISHOP]|brd->pcs[WHITE][QUEEN]|
brd->pcs[BLACK][BISHOP]|brd->pcs[BLACK][QUEEN];
rq=brd->pcs[WHITE][ROOK]|brd->pcs[WHITE][QUEEN]|
brd->pcs[BLACK][ROOK]|brd->pcs[BLACK][QUEEN];
kings=setmask[brd->king[WHITE]]|setmask[brd->king[BLACK]];
return((pawn_attacks[WHITE][sq]&brd->pcs[BLACK][PAWN])|
(pawn_attacks[BLACK][sq]&brd->pcs[WHITE][PAWN])|
(knight_attacks[sq]&(brd->pcs[WHITE][KNIGHT]|brd->pcs[BLACK][KNIGHT]))|
(bishop_attacks(brd,sq)&bq)|
(rook_attacks(brd,sq)&rq)|
(king_attacks[sq]&kings));
}