#include <climits>
#include <cstdlib>
-#if defined(_MSC_VER)
-
-// Disable some silly and noisy warning from MSVC compiler
-#pragma warning(disable: 4127) // Conditional expression is constant
-#pragma warning(disable: 4146) // Unary minus operator applied to unsigned type
-#pragma warning(disable: 4800) // Forcing value to bool 'true' or 'false'
-
-// MSVC does not support <inttypes.h>
-typedef signed __int8 int8_t;
-typedef unsigned __int8 uint8_t;
-typedef signed __int16 int16_t;
-typedef unsigned __int16 uint16_t;
-typedef signed __int32 int32_t;
-typedef unsigned __int32 uint32_t;
-typedef signed __int64 int64_t;
-typedef unsigned __int64 uint64_t;
-
-#else
-# include <inttypes.h>
-#endif
+#include "platform.h"
#if defined(_WIN64)
# include <intrin.h> // MSVC popcnt and bsfq instrinsics
typedef uint64_t Bitboard;
const int MAX_MOVES = 256;
-const int MAX_PLY = 100;
+const int MAX_PLY = 256;
const int MAX_PLY_PLUS_2 = MAX_PLY + 2;
const Bitboard FileABB = 0x0101010101010101ULL;
};
enum PieceType {
- NO_PIECE_TYPE = 0,
+ NO_PIECE_TYPE = 0, ALL_PIECES = 0,
PAWN = 1, KNIGHT = 2, BISHOP = 3, ROOK = 4, QUEEN = 5, KING = 6
};
return make_score(mg_value(s) / i, eg_value(s) / i);
}
+/// Weight score v by score w trying to prevent overflow
+inline Score apply_weight(Score v, Score w) {
+ return make_score((int(mg_value(v)) * mg_value(w)) / 0x100,
+ (int(eg_value(v)) * eg_value(w)) / 0x100);
+}
+
#undef ENABLE_OPERATORS_ON
#undef ENABLE_SAFE_OPERATORS_ON
}
inline Square operator~(Square s) {
- return Square(s ^ 56);
+ return Square(s ^ 56); // Vertical flip SQ_A1 -> SQ_A8
}
inline Value mate_in(int ply) {
return Square((r << 3) | f);
}
-inline bool square_is_ok(Square s) {
+inline bool is_ok(Square s) {
return s >= SQ_A1 && s <= SQ_H8;
}
}
inline Square mirror(Square s) {
- return Square(s ^ 7);
+ return Square(s ^ 7); // Horizontal flip SQ_A1 -> SQ_H1
}
inline Square relative_square(Color c, Square s) {
return (m & (3 << 14)) == (3 << 14);
}
-inline PieceType promotion_piece_type(Move m) {
+inline PieceType promotion_type(Move m) {
return PieceType(((m >> 12) & 3) + 2);
}