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add functions documentation - should be done earlier !!

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Bruno Raoult
2024-02-29 09:31:00 +01:00
parent 6d412e7fce
commit 8f0840fc2f
8 changed files with 147 additions and 90 deletions
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54
src/bitboard.h
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@@ -40,25 +40,34 @@ extern bitboard_t bb_rank[64], bb_file[64], bb_diag[64], bb_anti[64];
extern bitboard_t bb_knight[64], bb_king[64];
enum {
FILE_Abb = 0x0101010101010101ULL,
FILE_Bbb = 0x0202020202020202ULL,
FILE_Cbb = 0x0404040404040404ULL,
FILE_Dbb = 0x0808080808080808ULL,
FILE_Ebb = 0x1010101010101010ULL,
FILE_Fbb = 0x2020202020202020ULL,
FILE_Gbb = 0x4040404040404040ULL,
FILE_Hbb = 0x8080808080808080ULL,
A1bb = mask(A1), A2bb = mask(A2), A3bb = mask(A3), A4bb = mask(A4),
A5bb = mask(A5), A6bb = mask(A6), A7bb = mask(A7), A8bb = mask(A8),
B1bb = mask(B1), B2bb = mask(B2), B3bb = mask(B3), B4bb = mask(B4),
B5bb = mask(B5), B6bb = mask(B6), B7bb = mask(B7), B8bb = mask(B8),
C1bb = mask(C1), C2bb = mask(C2), C3bb = mask(C3), C4bb = mask(C4),
C5bb = mask(C5), C6bb = mask(C6), C7bb = mask(C7), C8bb = mask(C8),
D1bb = mask(D1), D2bb = mask(D2), D3bb = mask(D3), D4bb = mask(D4),
D5bb = mask(D5), D6bb = mask(D6), D7bb = mask(D7), D8bb = mask(D8),
E1bb = mask(E1), E2bb = mask(E2), E3bb = mask(E3), E4bb = mask(E4),
E5bb = mask(E5), E6bb = mask(E6), E7bb = mask(E7), E8bb = mask(E8),
F1bb = mask(F1), F2bb = mask(F2), F3bb = mask(F3), F4bb = mask(F4),
F5bb = mask(F5), F6bb = mask(F6), F7bb = mask(F7), F8bb = mask(F8),
G1bb = mask(G1), G2bb = mask(G2), G3bb = mask(G3), G4bb = mask(G4),
G5bb = mask(G5), G6bb = mask(G6), G7bb = mask(G7), G8bb = mask(G8),
H1bb = mask(H1), H2bb = mask(H2), H3bb = mask(H3), H4bb = mask(H4),
H5bb = mask(H5), H6bb = mask(H6), H7bb = mask(H7), H8bb = mask(H8),
};
enum {
RANK_1bb = 0x00000000000000ffULL,
RANK_2bb = 0x000000000000ff00ULL,
RANK_3bb = 0x0000000000ff0000ULL,
RANK_4bb = 0x00000000ff000000ULL,
RANK_5bb = 0x000000ff00000000ULL,
RANK_6bb = 0x0000ff0000000000ULL,
RANK_7bb = 0x00ff000000000000ULL,
RANK_8bb = 0xff00000000000000ULL
FILE_Abb = 0x0101010101010101ULL, FILE_Bbb = 0x0202020202020202ULL,
FILE_Cbb = 0x0404040404040404ULL, FILE_Dbb = 0x0808080808080808ULL,
FILE_Ebb = 0x1010101010101010ULL, FILE_Fbb = 0x2020202020202020ULL,
FILE_Gbb = 0x4040404040404040ULL, FILE_Hbb = 0x8080808080808080ULL,
RANK_1bb = 0x00000000000000ffULL, RANK_2bb = 0x000000000000ff00ULL,
RANK_3bb = 0x0000000000ff0000ULL, RANK_4bb = 0x00000000ff000000ULL,
RANK_5bb = 0x000000ff00000000ULL, RANK_6bb = 0x0000ff0000000000ULL,
RANK_7bb = 0x00ff000000000000ULL, RANK_8bb = 0xff00000000000000ULL
};
/* https://www.chessprogramming.org/Flipping_Mirroring_and_Rotating#Rotation
@@ -102,10 +111,15 @@ static __always_inline bitboard_t shift_nw(const bitboard_t bb)
return (bb & ~FILE_Abb) << NORTH_WEST;
}
/* pawn moves/attacks */
#define pawn_push(bb, c) ((c) == WHITE ? shift_n(bb): shift_s(bb))
#define pawn_take_left(bb, c) ((c) == WHITE ? shift_nw(bb): shift_se(bb))
#define pawn_take_right(bb, c) ((c) == WHITE ? shift_ne(bb): shift_sw(bb))
#define pawn_up_value(c) ((c) == WHITE ? 8: -8)
/* pawn moves/attacks (for bitboards) */
#define pawn_shift_up(bb, c) ((c) == WHITE ? shift_n(bb): shift_s(bb))
#define pawn_shift_upleft(bb, c) ((c) == WHITE ? shift_nw(bb): shift_se(bb))
#define pawn_shift_upright(bb, c) ((c) == WHITE ? shift_ne(bb): shift_sw(bb))
/* pawn move (for single pawn) */
#define pawn_push_up(sq, c) ((sq) + ((c) == WHITE ? NORTH: SOUTH))
#define pawn_push_upleft(sq, c) ((sq) + ((c) == WHITE ? NORTH_WEST: SOUTH_EAST))
#define pawn_push_upright(sq, c) ((sq) + ((c) == WHITE ? NORTH_EAST: SOUTH_WEST))
extern bitboard_t bitboard_between_excl(square_t sq1, square_t sq2);
extern void bitboard_init(void);