Introduce dynamic contempt

[stockfish] / src / evaluate.h

diff --git a/src/evaluate.h b/src/evaluate.h
index eef888db5e2c1e4ea9cfaddb75e0beb5a4518697..0004dd6319defab08530ed1aa10646e3bb9ff060 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"
@@ -31,7 +32,7 @@ namespace Eval {
 
 const Value Tempo = Value(20); // Must be visible to search
 
-extern Score Contempt;
+extern std::atomic<Score> Contempt;
 
 std::string trace(const Position& pos);