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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