stellarUCI Chess engine written in C++20 |
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bitboard.hpp (837B)
0 #ifndef STELLAR_BITBOARD_H 1 #define STELLAR_BITBOARD_H 2 3 #include "utils.hpp" 4 5 namespace bitboard { 6 7 void print(U64 bitboard); 8 9 inline constexpr const U64 notAFile = C64(0xfefefefefefefefe); 10 inline constexpr const U64 notHFile = C64(0x7f7f7f7f7f7f7f7f); 11 12 typedef U64 (*direction_f)(U64); 13 inline constexpr U64 soutOne(U64 b) { return b >> 8; } 14 inline constexpr U64 nortOne(U64 b) { return b << 8; } 15 inline constexpr U64 eastOne(U64 b) { return (b & notHFile) << 1; } 16 inline constexpr U64 westOne(U64 b) { return (b & notAFile) >> 1; } 17 inline constexpr U64 soEaOne(U64 b) { return (b & notHFile) >> 7; } 18 inline constexpr U64 soWeOne(U64 b) { return (b & notAFile) >> 9; } 19 inline constexpr U64 noEaOne(U64 b) { return (b & notHFile) << 9; } 20 inline constexpr U64 noWeOne(U64 b) { return (b & notAFile) << 7; } 21 22 } // namespace bitboard 23 24 #endif