Bench: 25545602

src/search.c

@@ -147,8 +147,9 @@ static int Quiescence(Thread *thread, Stack *ss, int alpha, int beta) {
     eval = CorrectEval(thread, ss, eval, pos->rule50);
 
     // Use ttScore as eval if it is more informative
-    if (abs(ttScore) < TBWIN_IN_MAX && TTScoreIsMoreInformative(ttBound, ttScore, eval))
-        eval = ttScore;
+    int nonTerminalScore = CLAMP(eval, -TBWIN_IN_MAX + 1, TBWIN_IN_MAX - 1);
+    if (TTScoreIsMoreInformative(ttBound, nonTerminalScore, eval))
+        eval = nonTerminalScore;
 
     // If eval beats beta we assume some move will also beat it
     if (eval >= beta)
@@ -337,8 +338,9 @@ static int AlphaBeta(Thread *thread, Stack *ss, int alpha, int beta, Depth depth
     ss->staticEval = eval = CorrectEval(thread, ss, eval, pos->rule50);
 
     // Use ttScore as eval if it is more informative
-    if (abs(ttScore) < TBWIN_IN_MAX && TTScoreIsMoreInformative(ttBound, ttScore, eval))
-        eval = ttScore;
+    int nonTerminalScore = CLAMP(eval, -TBWIN_IN_MAX + 1, TBWIN_IN_MAX - 1);
+    if (TTScoreIsMoreInformative(ttBound, nonTerminalScore, eval))
+        eval = nonTerminalScore;
 
     // Improving if not in check, and current eval is higher than 2 plies ago
     bool improving = !inCheck && eval > (ss-2)->staticEval;