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root 2015-01-10 14:26:06 +00:00
parent aefabaa70f
commit 81498ecce4
3 changed files with 6 additions and 36 deletions
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10
src/bitboard.cpp
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@ -1,7 +1,7 @@
#include "bitboard.h"
Bitboard FileBB[8];
Bitboard AdjacentFilesBB[8];
Bitboard A[8];
Bitboard B[8];
Bitboard C;
/// Bitboards::init() initializes various bitboard tables. It is called at
@ -10,11 +10,11 @@ Bitboard C;
void Bitboards::init() {
for (int f = 0; f <= 7; ++f)
FileBB[f] = f > 0 ? FileBB[f - 1] << 1 : 0x01010101;
A[f] = f > 0 ? A[f - 1] << 1 : 0x01010101;
for (int f = 0; f <= 7; ++f)
AdjacentFilesBB[f] = (f > 0 ? FileBB[f - 1] : 0) | (f < 7 ? FileBB[f + 1] : 0);
B[f] = (f > 0 ? A[f - 1] : 0) | (f < 7 ? A[f + 1] : 0);
C = AdjacentFilesBB[7];
C = B[7];
}

30
src/bitboard.h
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@ -5,36 +5,6 @@
typedef uint64_t Bitboard;
enum File {
FILE_A, FILE_B, FILE_C, FILE_D, FILE_E, FILE_F, FILE_G, FILE_H, FILE_NB
};
#define ENABLE_BASE_OPERATORS_ON(T) \
inline T operator+(T d1, T d2) { return T(int(d1) + int(d2)); } \
inline T operator-(T d1, T d2) { return T(int(d1) - int(d2)); } \
inline T operator*(int i, T d) { return T(i * int(d)); } \
inline T operator*(T d, int i) { return T(int(d) * i); } \
inline T operator-(T d) { return T(-int(d)); } \
inline T& operator+=(T& d1, T d2) { return d1 = d1 + d2; } \
inline T& operator-=(T& d1, T d2) { return d1 = d1 - d2; } \
inline T& operator*=(T& d, int i) { return d = T(int(d) * i); }
#define ENABLE_FULL_OPERATORS_ON(T) \
ENABLE_BASE_OPERATORS_ON(T) \
inline T& operator++(T& d) { return d = T(int(d) + 1); } \
inline T& operator--(T& d) { return d = T(int(d) - 1); } \
inline T operator/(T d, int i) { return T(int(d) / i); } \
inline int operator/(T d1, T d2) { return int(d1) / int(d2); } \
inline T& operator/=(T& d, int i) { return d = T(int(d) / i); }
ENABLE_FULL_OPERATORS_ON(File)
namespace Bitboards { void init(); }
extern Bitboard AdjacentFilesBB[FILE_NB];
inline Bitboard adjacent_files_bb(File f) {
return AdjacentFilesBB[f];
}
#endif // #ifndef BITBOARD_H_INCLUDED

2
src/main.cpp
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@ -1,2 +1,2 @@
#include "bitboard.h"
namespace Bitboards { void init(); }
int main() { Bitboards::init(); }