Debugged a stupid bug.

[mtp.git] / mtp_graph.h

diff --git a/mtp_graph.h b/mtp_graph.h
index ddf7162..0fad09d 100644 (file)
--- a/mtp_graph.h
+++ b/mtp_graph.h
@@ -20,6 +20,7 @@
 #define MTP_GRAPH_H
 
 #include <iostream>
+#include <cmath>
 
 using namespace std;