--- analitzaplot/plotter2d.cpp.orig	2014-02-16 02:03:35.000000000 +0900
+++ analitzaplot/plotter2d.cpp	2014-06-13 02:00:50.000000000 +0900
@@ -25,6 +25,7 @@
 #include "private/utils/mathutils.h"
 
 #include <cmath>
+#include <cstdlib>
 #include <QPalette>
 #include <QPainter>
 #include <QDebug>