diff -r a27ab230a178 -r c38925cc6a4d graph_displayer_canvas-zoom.cc
--- a/graph_displayer_canvas-zoom.cc	Sun Aug 07 22:14:59 2005 +0000
+++ b/graph_displayer_canvas-zoom.cc	Tue Aug 16 20:07:14 2005 +0000
@@ -1,6 +1,6 @@
 #include "graph_displayer_canvas.h"
 #include "broken_edge.h"
-#include <math.h>
+#include <cmath>
 
 void GraphDisplayerCanvas::zoomIn()
 {