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Update k.cpp

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JWmer
2020-11-20 15:15:54 +01:00
committed by nodchip
parent 5b3e9b0eb3
commit 36c801699f
1 changed files with 4 additions and 2 deletions
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src/nnue/features/k.cpp
+4 -2
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@@ -4,9 +4,11 @@
//Definition of input feature quantity K of NNUE evaluation function //Definition of input feature quantity K of NNUE evaluation function
namespace Eval::NNUE::Features { namespace Eval::NNUE::Features {
// Orient a square according to perspective (flip rank for black) // Orient a square according to perspective (rotate the board 180° for black)
// this has to stay until we find a better arch that works with "flip".
// allows us to use current master net for gensfen (primarily needed for higher quality data)
inline Square orient(Color perspective, Square s) { inline Square orient(Color perspective, Square s) {
return Square(int(s) ^ (bool(perspective) * SQ_A8)); return Square(int(s) ^ (bool(perspective) * 63));
} }
// Index of a feature for a given king position. // Index of a feature for a given king position.