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Code Issues Releases Wiki Activity

Simplify lookup_count and clean up pieces().

Browse source 
https://github.com/official-stockfish/Stockfish/pull/4656

No functional change
This commit is contained in:
mstembera 2023-07-02 19:48:18 -07:00 • committed by Joost VandeVondele
parent 8634717c64
commit 80564bcfcd
2 changed files with 4 additions and 12 deletions
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12
src/nnue/layers/affine_transform_sparse_input.h
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@ -24,6 +24,7 @@
#include <iostream> #include <iostream>
#include <algorithm> #include <algorithm>
#include <array> #include <array>
#include <bitset>
#include <type_traits> #include <type_traits>
#include "../nnue_common.h" #include "../nnue_common.h"
#include "affine_transform.h" #include "affine_transform.h"
@ -77,16 +78,7 @@ namespace Stockfish::Eval::NNUE::Layers {
alignas(CacheLineSize) static inline const std::array<unsigned, 256> lookup_count = [](){ alignas(CacheLineSize) static inline const std::array<unsigned, 256> lookup_count = [](){
std::array<unsigned, 256> v; std::array<unsigned, 256> v;
for (int i = 0; i < 256; ++i) for (int i = 0; i < 256; ++i)
{ v[i] = unsigned(std::bitset<8>(i).count());
int j = i;
int k = 0;
while(j)
{
j &= j - 1;
++k;
}
v[i] = k;
}
return v; return v;
}(); }();

4
src/position.h
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@ -91,7 +91,7 @@ public:
std::string fen() const; std::string fen() const;
// Position representation // Position representation
Bitboard pieces(PieceType pt) const; Bitboard pieces(PieceType pt = ALL_PIECES) const;
template<typename ...PieceTypes> Bitboard pieces(PieceType pt, PieceTypes... pts) const; template<typename ...PieceTypes> Bitboard pieces(PieceType pt, PieceTypes... pts) const;
Bitboard pieces(Color c) const; Bitboard pieces(Color c) const;
template<typename ...PieceTypes> Bitboard pieces(Color c, PieceTypes... pts) const; template<typename ...PieceTypes> Bitboard pieces(Color c, PieceTypes... pts) const;
@ -224,7 +224,7 @@ inline Piece Position::moved_piece(Move m) const {
return piece_on(from_sq(m)); return piece_on(from_sq(m));
} }
inline Bitboard Position::pieces(PieceType pt = ALL_PIECES) const { inline Bitboard Position::pieces(PieceType pt) const {
return byTypeBB[pt]; return byTypeBB[pt];
} }