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-rw-r--r--src/Cech_complex/include/Miniball/Miniball.hpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/Cech_complex/include/Miniball/Miniball.hpp b/src/Cech_complex/include/Miniball/Miniball.hpp
index cb76c534..a42d62a7 100644
--- a/src/Cech_complex/include/Miniball/Miniball.hpp
+++ b/src/Cech_complex/include/Miniball/Miniball.hpp
@@ -23,6 +23,9 @@
// CH-8092 Zuerich, Switzerland
// http://www.inf.ethz.ch/personal/gaertner
+#ifndef MINIBALL_HPP_
+#define MINIBALL_HPP_
+
#include <cassert>
#include <algorithm>
#include <list>
@@ -513,3 +516,5 @@ namespace Miniball {
}
} // end Namespace Miniball
+
+#endif // MINIBALL_HPP_