add boost on mac

macx64/include/boost/units/base_units/information/nat.hpp

@@ -0,0 +1,30 @@
+// Boost.Units - A C++ library for zero-overhead dimensional analysis and 
+// unit/quantity manipulation and conversion
+//
+// Copyright (C) 2014 Erik Erlandson
+//
+// 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_BASE_UNITS_INFORMATION_NAT_HPP_INCLUDED
+#define BOOST_UNITS_BASE_UNITS_INFORMATION_NAT_HPP_INCLUDED
+
+#include <boost/units/conversion.hpp>
+#include <boost/units/base_units/information/bit.hpp>
+
+BOOST_UNITS_DEFINE_BASE_UNIT_WITH_CONVERSIONS(information, nat,
+                                              "nat", "nat",
+                                              1.442695040888964,
+                                              boost::units::information::bit_base_unit, 
+                                              -702);
+
+#if BOOST_UNITS_HAS_BOOST_TYPEOF
+
+#include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP()
+
+BOOST_TYPEOF_REGISTER_TYPE(boost::units::information::nat_base_unit)
+
+#endif
+
+#endif // BOOST_UNITS_BASE_UNITS_INFORMATION_NAT_HPP_INCLUDED