opelly/Stockfish
1
0
Fork 0
mirror of https://github.com/opelly27/Stockfish.git synced 2026-05-20 06:17:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

Cleaned up MakeIndex()

Browse Source 
The index order in kpp_board_index[][] is reversed to be more optimal for the access pattern

STC https://tests.stockfishchess.org/tests/view/5fbd74f967cbf42301d6b24f
LLR: 2.93 (-2.94,2.94) {-1.25,0.25}
Total: 27504 W: 2686 L: 2607 D: 22211
Ptnml(0-2): 84, 2001, 9526, 2034, 107

closes https://github.com/official-stockfish/Stockfish/pull/3233

No functional change
This commit is contained in:
mstembera
2020-11-17 15:58:25 -08:00
committed by Joost VandeVondele
parent 190dd26b9f
commit 9b7983a452
4 changed files with 14 additions and 35 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/nnue/nnue_common.h
+8 -1
View File
@@ -90,7 +90,14 @@ namespace Eval::NNUE {
PS_END2 = 12 * SQUARE_NB + 1
};
extern const uint32_t kpp_board_index[PIECE_NB][COLOR_NB];
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 }
};
// Type of input feature after conversion
using TransformedFeatureType = std::uint8_t;