Add a missing #include.

diff --git a/correlation_meter.cpp b/correlation_meter.cpp
index b1080ca9296f0ff04ddfa6790d2a127e2eeb6c53..005a1e2bb91b47753d23a19a97c1883e616ad961 100644 (file)
--- a/correlation_meter.cpp
+++ b/correlation_meter.cpp
@@ -1,5 +1,7 @@
 #include <QPainter>
 
+#include <math.h>
+
 #include "correlation_meter.h"
 
 using namespace std;