#include "bitcount.h"
#include "rkiss.h"
+CACHE_LINE_ALIGNMENT
+
Bitboard RMasks[64];
Bitboard RMagics[64];
Bitboard* RAttacks[64];
Bitboard* BAttacks[64];
int BShifts[64];
-Bitboard SetMaskBB[65];
-Bitboard ClearMaskBB[65];
-
+Bitboard SquareBB[64];
Bitboard FileBB[8];
Bitboard RankBB[8];
Bitboard AdjacentFilesBB[8];
Bitboard SquaresInFrontMask[2][64];
Bitboard PassedPawnMask[2][64];
Bitboard AttackSpanMask[2][64];
-
Bitboard PseudoAttacks[6][64];
uint8_t BitCount8Bit[256];
{
std::cout << "+---+---+---+---+---+---+---+---+" << '\n';
for (File f = FILE_A; f <= FILE_H; f++)
- std::cout << "| " << (bit_is_set(b, make_square(f, r)) ? "X " : " ");
+ std::cout << "| " << ((b & make_square(f, r)) ? "X " : " ");
std::cout << "|\n";
}
BitCount8Bit[b] = (uint8_t)popcount<Max15>(b);
for (Square s = SQ_A1; s <= SQ_H8; s++)
- {
- SetMaskBB[s] = 1ULL << s;
- ClearMaskBB[s] = ~SetMaskBB[s];
- }
-
- ClearMaskBB[SQ_NONE] = ~0ULL;
+ SquareBB[s] = 1ULL << s;
FileBB[FILE_A] = FileABB;
RankBB[RANK_1] = Rank1BB;
Square to = s + Square(c == WHITE ? steps[pt][k] : -steps[pt][k]);
if (square_is_ok(to) && square_distance(s, to) < 3)
- set_bit(&StepAttacksBB[make_piece(c, pt)][s], to);
+ StepAttacksBB[make_piece(c, pt)][s] |= to;
}
Square RDeltas[] = { DELTA_N, DELTA_E, DELTA_S, DELTA_W };
for (Square s1 = SQ_A1; s1 <= SQ_H8; s1++)
for (Square s2 = SQ_A1; s2 <= SQ_H8; s2++)
- if (bit_is_set(PseudoAttacks[QUEEN][s1], s2))
+ if (PseudoAttacks[QUEEN][s1] & s2)
{
Square delta = (s2 - s1) / square_distance(s1, s2);
for (Square s = s1 + delta; s != s2; s += delta)
- set_bit(&BetweenBB[s1][s2], s);
+ BetweenBB[s1][s2] |= s;
}
}
square_is_ok(s) && square_distance(s, s - deltas[i]) == 1;
s += deltas[i])
{
- set_bit(&attack, s);
+ attack |= s;
- if (bit_is_set(occupied, s))
+ if (occupied & s)
break;
}