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add hyperbola-quintessence.[ch]}, rank move gen, + file/rook/queen

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Bruno Raoult
2024-02-15 10:15:13 +01:00
parent bc28a900be
commit 403e625cbe
8 changed files with 297 additions and 139 deletions
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50
src/bitboard.h
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@@ -23,16 +23,15 @@
typedef u64 bitboard_t;
/* mapping square -> bitboard */
extern bitboard_t sq_bb[64];
extern bitboard_t bb_sq[64];
/* mapping square -> rank/file/diagonal/antidiagonal */
extern bitboard_t sq_bbrank[64], sq_bbfile[64], sq_bbdiag[64], sq_bbanti[64];
extern bitboard_t knight_attacks[64], king_attacks[64];
extern bitboard_t bb_rank[64], bb_file[64], bb_diagonal[64], bb_antidiagonal[64];
extern bitboard_t bb_knight[64], bb_king[64];
#define mask(i) ( 1ULL << (i) )
typedef enum {
enum {
FILE_Abb = 0x0101010101010101ULL,
FILE_Bbb = 0x0202020202020202ULL,
FILE_Cbb = 0x0404040404040404ULL,
@@ -41,9 +40,9 @@ typedef enum {
FILE_Fbb = 0x2020202020202020ULL,
FILE_Gbb = 0x4040404040404040ULL,
FILE_Hbb = 0x8080808080808080ULL,
} file_bb;
};
typedef enum {
enum {
RANK_1bb = 0x00000000000000ffULL,
RANK_2bb = 0x000000000000ff00ULL,
RANK_3bb = 0x0000000000ff0000ULL,
@@ -52,7 +51,7 @@ typedef enum {
RANK_6bb = 0x0000ff0000000000ULL,
RANK_7bb = 0x00ff000000000000ULL,
RANK_8bb = 0xff00000000000000ULL
} rank_bb;
};
/* https://www.chessprogramming.org/Flipping_Mirroring_and_Rotating#Rotation
*/
@@ -61,8 +60,43 @@ static __always_inline bitboard_t bb_rotate_90(bitboard_t b)
return b;
}
/* TODO: when OK, replace with macros */
static __always_inline bitboard_t shift_n(const bitboard_t bb)
{
return bb << NORTH;
}
static __always_inline bitboard_t shift_ne(const bitboard_t bb)
{
return (bb & ~FILE_Hbb) << NORTH_EAST;
}
static __always_inline bitboard_t shift_e(const bitboard_t bb)
{
return (bb & ~FILE_Hbb) << EAST;
}
static __always_inline bitboard_t shift_se(const bitboard_t bb)
{
return (bb & ~FILE_Hbb) >> -SOUTH_EAST;
}
static __always_inline bitboard_t shift_s(const bitboard_t bb)
{
return bb >> -SOUTH;
}
static __always_inline bitboard_t shift_sw(const bitboard_t bb)
{
return (bb & ~FILE_Abb) >> -SOUTH_WEST;
}
static __always_inline bitboard_t shift_w(const bitboard_t bb)
{
return (bb & ~FILE_Abb) >> -WEST;
}
static __always_inline bitboard_t shift_nw(const bitboard_t bb)
{
return (bb & ~FILE_Abb) << NORTH_WEST;
}
extern void bitboard_init(void);
extern void bitboard_print(const char *title, const bitboard_t bitboard);
extern void bitboard_print_multi(const char *title, const int n, ...);
extern char *bitboard8_sprint(char *str, const uchar bb8);
#endif /* _BITBOARD_H */