Added thirdparty: boost library

thirdparty/include/boost/units/is_dimensionless_unit.hpp

@@ -0,0 +1,34 @@
+// Boost.Units - A C++ library for zero-overhead dimensional analysis and 
+// unit/quantity manipulation and conversion
+//
+// Copyright (C) 2003-2008 Matthias Christian Schabel
+// Copyright (C) 2008 Steven Watanabe
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_UNITS_IS_DIMENSIONLESS_UNIT_HPP
+#define BOOST_UNITS_IS_DIMENSIONLESS_UNIT_HPP
+
+/// \file
+/// \brief Check that a type is a dimensionless unit.
+
+#include <boost/units/is_unit_of_dimension.hpp>
+#include <boost/units/units_fwd.hpp>
+
+namespace boost {
+
+namespace units {
+
+/// Check that a type is a dimensionless unit.
+template<class T>
+struct is_dimensionless_unit :
+    public is_unit_of_dimension<T,dimensionless_type>
+{ };
+
+} // namespace units
+
+} // namespace boost
+
+#endif // BOOST_UNITS_IS_DIMENSIONLESS_UNIT_HPP