Imported Upstream version 1.72.0

[platform/upstream/boost.git] / boost / math / tools / complex.hpp

diff --git a/boost/math/tools/complex.hpp b/boost/math/tools/complex.hpp
index f3c0184..1b03ad3 100644 (file)
--- a/boost/math/tools/complex.hpp
+++ b/boost/math/tools/complex.hpp
@@ -7,6 +7,9 @@
 // Tools for operator on complex as well as scalar types.
 //
 
+#ifndef BOOST_MATH_TOOLS_COMPLEX_HPP
+#define BOOST_MATH_TOOLS_COMPLEX_HPP
+
 #include <boost/type_traits/is_complex.hpp>
 
 namespace boost {
@@ -55,3 +58,5 @@ namespace boost {
 
 
 } } }
+
+#endif // BOOST_MATH_TOOLS_COMPLEX_HPP