X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fthread.cpp;fp=src%2Fthread.cpp;h=de8de87d8a2b9d94f6f57b9876d658f459abfbc0;hp=bc884dedf01ed5ef0a4a1c8ed101fe045e8c9571;hb=a069a1bbbfb60abddbe3fe5276b06f35f783f41c;hpb=07a2619b62a25910a32ad8a4e9912f748338580f

diff --git a/src/thread.cpp b/src/thread.cpp
index bc884ded..de8de87d 100644
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -20,6 +20,7 @@
 
 #include <algorithm>
 #include <cassert>
+#include <cmath>
 #include <cstdlib>
 #include <deque>
 #include <initializer_list>
@@ -235,7 +236,7 @@ Thread* ThreadPool::get_best_thread() const {
         votes[th->rootMoves[0].pv[0]] += thread_value(th);
 
     for (Thread* th : threads)
-        if (abs(bestThread->rootMoves[0].score) >= VALUE_TB_WIN_IN_MAX_PLY)
+        if (std::abs(bestThread->rootMoves[0].score) >= VALUE_TB_WIN_IN_MAX_PLY)
         {
             // Make sure we pick the shortest mate / TB conversion or stave off mate the longest
             if (th->rootMoves[0].score > bestThread->rootMoves[0].score)