Added boost header

test/external/boost/units/physical_dimensions/acceleration.hpp

@@ -0,0 +1,30 @@
+// 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_ACCELERATION_DERIVED_DIMENSION_HPP
+#define BOOST_UNITS_ACCELERATION_DERIVED_DIMENSION_HPP
+
+#include <boost/units/derived_dimension.hpp>
+#include <boost/units/physical_dimensions/length.hpp>
+#include <boost/units/physical_dimensions/time.hpp>
+
+namespace boost {
+
+namespace units {
+
+/// derived dimension for acceleration : L T^-2
+typedef derived_dimension<length_base_dimension,1,
+                          time_base_dimension,-2>::type acceleration_dimension;  
+
+} // namespace units
+
+} // namespace boost
+
+#endif // BOOST_UNITS_ACCELERATION_DERIVED_DIMENSION_HPP