Fix compilation after recent merge.

[stockfish] / src / evaluate.cpp

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 9c39d4c07fbb407ed7934dc14ab118994615c557..586cadc0ec50c6cb5fe211aaecd7ad1efa755afc 100644 (file)
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -20,6 +20,7 @@
 
 #include <algorithm>
 #include <cassert>
+#include <cmath>
 #include <cstdlib>
 #include <fstream>
 #include <iomanip>
@@ -164,9 +165,9 @@ Value Eval::evaluate(const Position& pos) {
     int   shuffling  = pos.rule50_count();
     int   simpleEval = simple_eval(pos, stm) + (int(pos.key() & 7) - 3);
 
-    bool lazy = abs(simpleEval) >= RookValue + KnightValue + 16 * shuffling * shuffling
-                                     + abs(pos.this_thread()->bestValue)
-                                     + abs(pos.this_thread()->rootSimpleEval);
+    bool lazy = std::abs(simpleEval) >= RookValue + KnightValue + 16 * shuffling * shuffling
+                                          + std::abs(pos.this_thread()->bestValue)
+                                          + std::abs(pos.this_thread()->rootSimpleEval);
 
     if (lazy)
         v = Value(simpleEval);
@@ -178,8 +179,8 @@ Value Eval::evaluate(const Position& pos) {
         Value optimism = pos.this_thread()->optimism[stm];
 
         // Blend optimism and eval with nnue complexity and material imbalance
-        optimism += optimism * (nnueComplexity + abs(simpleEval - nnue)) / 512;
-        nnue -= nnue * (nnueComplexity + abs(simpleEval - nnue)) / 32768;
+        optimism += optimism * (nnueComplexity + std::abs(simpleEval - nnue)) / 512;
+        nnue -= nnue * (nnueComplexity + std::abs(simpleEval - nnue)) / 32768;
 
         int npm = pos.non_pawn_material() / 64;
         v       = (nnue * (915 + npm + 9 * pos.count<PAWN>()) + optimism * (154 + npm)) / 1024;