fix static eval init at root

test r15
dhbloo · Jun 13, 2024 · af703ba · af703ba
1 parent fa863d2
commit af703ba
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/Rapfi/search/ab/searchstack.h b/Rapfi/search/ab/searchstack.h
@@ -92,9 +92,13 @@ class StackArray : std::vector<SearchStack>
         reserve(maxPly + plyBeforeRoot + plyAfterMax);
         for (int i = -plyBeforeRoot; i < maxPly + plyAfterMax; i++)
             push_back(SearchStack {nextTriPvIndex(i), i});
+
         // Initialize static evaluation for plies before root
-        for (int i = 0; i <= plyBeforeRoot; i++)
-            (*this)[i].staticEval = initStaticEval;
+        Value staticEval = initStaticEval;
+        for (int i = plyBeforeRoot; i >= 0; i--) {
+            (*this)[i].staticEval = staticEval;
+            staticEval            = -staticEval;
+        }
     }
     SearchStack *rootStack() { return &(*this)[plyBeforeRoot]; }