namespace Stockfish::Eval::NNUE {
// Version of the evaluation file
- constexpr std::uint32_t kVersion = 0x7AF32F16u;
+ constexpr std::uint32_t Version = 0x7AF32F20u;
// Constant used in evaluation value calculation
- constexpr int FV_SCALE = 16;
- constexpr int kWeightScaleBits = 6;
+ constexpr int OutputScale = 16;
+ constexpr int WeightScaleBits = 6;
// Size of cache line (in bytes)
- constexpr std::size_t kCacheLineSize = 64;
+ constexpr std::size_t CacheLineSize = 64;
// SIMD width (in bytes)
#if defined(USE_AVX2)
- constexpr std::size_t kSimdWidth = 32;
+ constexpr std::size_t SimdWidth = 32;
#elif defined(USE_SSE2)
- constexpr std::size_t kSimdWidth = 16;
+ constexpr std::size_t SimdWidth = 16;
#elif defined(USE_MMX)
- constexpr std::size_t kSimdWidth = 8;
+ constexpr std::size_t SimdWidth = 8;
#elif defined(USE_NEON)
- constexpr std::size_t kSimdWidth = 16;
+ constexpr std::size_t SimdWidth = 16;
#endif
- constexpr std::size_t kMaxSimdWidth = 32;
-
- // unique number for each piece type on each square
- enum {
- PS_NONE = 0,
- PS_W_PAWN = 1,
- PS_B_PAWN = 1 * SQUARE_NB + 1,
- PS_W_KNIGHT = 2 * SQUARE_NB + 1,
- PS_B_KNIGHT = 3 * SQUARE_NB + 1,
- PS_W_BISHOP = 4 * SQUARE_NB + 1,
- PS_B_BISHOP = 5 * SQUARE_NB + 1,
- PS_W_ROOK = 6 * SQUARE_NB + 1,
- PS_B_ROOK = 7 * SQUARE_NB + 1,
- PS_W_QUEEN = 8 * SQUARE_NB + 1,
- PS_B_QUEEN = 9 * SQUARE_NB + 1,
- PS_W_KING = 10 * SQUARE_NB + 1,
- PS_END = PS_W_KING, // pieces without kings (pawns included)
- PS_B_KING = 11 * SQUARE_NB + 1,
- PS_END2 = 12 * SQUARE_NB + 1
- };
-
- constexpr uint32_t kpp_board_index[COLOR_NB][PIECE_NB] = {
- // convention: W - us, B - them
- // viewed from other side, W and B are reversed
- { PS_NONE, PS_W_PAWN, PS_W_KNIGHT, PS_W_BISHOP, PS_W_ROOK, PS_W_QUEEN, PS_W_KING, PS_NONE,
- PS_NONE, PS_B_PAWN, PS_B_KNIGHT, PS_B_BISHOP, PS_B_ROOK, PS_B_QUEEN, PS_B_KING, PS_NONE },
- { PS_NONE, PS_B_PAWN, PS_B_KNIGHT, PS_B_BISHOP, PS_B_ROOK, PS_B_QUEEN, PS_B_KING, PS_NONE,
- PS_NONE, PS_W_PAWN, PS_W_KNIGHT, PS_W_BISHOP, PS_W_ROOK, PS_W_QUEEN, PS_W_KING, PS_NONE }
- };
+ constexpr std::size_t MaxSimdWidth = 32;
// Type of input feature after conversion
using TransformedFeatureType = std::uint8_t;
// Round n up to be a multiple of base
template <typename IntType>
- constexpr IntType CeilToMultiple(IntType n, IntType base) {
+ constexpr IntType ceil_to_multiple(IntType n, IntType base) {
return (n + base - 1) / base * base;
}
return result;
}
+ template <typename IntType>
+ inline void write_little_endian(std::ostream& stream, IntType value) {
+
+ std::uint8_t u[sizeof(IntType)];
+ typename std::make_unsigned<IntType>::type v = value;
+
+ std::size_t i = 0;
+ // if constexpr to silence the warning about shift by 8
+ if constexpr (sizeof(IntType) > 1) {
+ for (; i + 1 < sizeof(IntType); ++i) {
+ u[i] = v;
+ v >>= 8;
+ }
+ }
+ u[i] = v;
+
+ stream.write(reinterpret_cast<char*>(u), sizeof(IntType));
+ }
} // namespace Stockfish::Eval::NNUE
#endif // #ifndef NNUE_COMMON_H_INCLUDED