Use per-thread dynamic contempt

[stockfish] / src / evaluate.h

diff --git a/src/evaluate.h b/src/evaluate.h
index eef888db5e2c1e4ea9cfaddb75e0beb5a4518697..ccc6d5fa7b4b867e15786b328367fd99932bbfe9 100644 (file)
--- a/src/evaluate.h
+++ b/src/evaluate.h
@@ -21,6 +21,7 @@
 #ifndef EVALUATE_H_INCLUDED
 #define EVALUATE_H_INCLUDED
 
+#include <atomic>
 #include <string>
 
 #include "types.h"
@@ -29,9 +30,7 @@ class Position;
 
 namespace Eval {
 
-const Value Tempo = Value(20); // Must be visible to search
-
-extern Score Contempt;
+constexpr Value Tempo = Value(20); // Must be visible to search
 
 std::string trace(const Position& pos);