extern Bitboard PassedPawnMask[2][64];
extern Bitboard AttackSpanMask[2][64];
-extern uint64_t RMult[64];
-extern int RShift[64];
-extern Bitboard RMask[64];
+extern uint64_t RMagics[64];
+extern int RShifts[64];
+extern Bitboard RMasks[64];
extern Bitboard* RAttacks[64];
-extern uint64_t BMult[64];
-extern int BShift[64];
-extern Bitboard BMask[64];
+extern uint64_t BMagics[64];
+extern int BShifts[64];
+extern Bitboard BMasks[64];
extern Bitboard* BAttacks[64];
extern Bitboard BishopPseudoAttacks[64];
#if defined(IS_64BIT)
inline Bitboard rook_attacks_bb(Square s, Bitboard occ) {
- return RAttacks[s][((occ & RMask[s]) * RMult[s]) >> RShift[s]];
+ return RAttacks[s][((occ & RMasks[s]) * RMagics[s]) >> RShifts[s]];
}
inline Bitboard bishop_attacks_bb(Square s, Bitboard occ) {
- return BAttacks[s][((occ & BMask[s]) * BMult[s]) >> BShift[s]];
+ return BAttacks[s][((occ & BMasks[s]) * BMagics[s]) >> BShifts[s]];
}
#else // if !defined(IS_64BIT)
inline Bitboard rook_attacks_bb(Square s, Bitboard occ) {
- Bitboard b = occ & RMask[s];
+ Bitboard b = occ & RMasks[s];
return RAttacks[s]
- [unsigned(int(b) * int(RMult[s]) ^ int(b >> 32) * int(RMult[s] >> 32)) >> RShift[s]];
+ [unsigned(int(b) * int(RMagics[s]) ^ int(b >> 32) * int(RMagics[s] >> 32)) >> RShifts[s]];
}
inline Bitboard bishop_attacks_bb(Square s, Bitboard occ) {
- Bitboard b = occ & BMask[s];
+ Bitboard b = occ & BMasks[s];
return BAttacks[s]
- [unsigned(int(b) * int(BMult[s]) ^ int(b >> 32) * int(BMult[s] >> 32)) >> BShift[s]];
+ [unsigned(int(b) * int(BMagics[s]) ^ int(b >> 32) * int(BMagics[s] >> 32)) >> BShifts[s]];
}
#endif