add boost on mac

macx64/include/boost/units/systems/information/prefixes.hpp

@@ -0,0 +1,45 @@
+// 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_SYSTEMS_INFORMATION_PREFIXES_HPP_INCLUDED
+#define BOOST_UNITS_SYSTEMS_INFORMATION_PREFIXES_HPP_INCLUDED
+
+#include <boost/units/make_scaled_unit.hpp>
+#include <boost/units/static_rational.hpp>
+#include <boost/units/scale.hpp>
+
+#include <boost/units/systems/information/byte.hpp>
+
+#define BOOST_UNITS_INFOSYS_PREFIX(exponent, name) \
+    typedef make_scaled_unit<dimensionless, scale<2, static_rational<exponent> > >::type name ## _pf_type; \
+    BOOST_UNITS_STATIC_CONSTANT(name, name ## _pf_type)
+
+namespace boost {
+namespace units {
+namespace information {
+
+// Note, these are defined (somewhat arbitrarily) against the 'byte' system.
+// They work smoothly with bit_information, nat_information, etc, so it is
+// transparent to the user.
+BOOST_UNITS_INFOSYS_PREFIX(10, kibi);
+BOOST_UNITS_INFOSYS_PREFIX(20, mebi);
+BOOST_UNITS_INFOSYS_PREFIX(30, gibi);
+BOOST_UNITS_INFOSYS_PREFIX(40, tebi);
+BOOST_UNITS_INFOSYS_PREFIX(50, pebi);
+BOOST_UNITS_INFOSYS_PREFIX(60, exbi);
+BOOST_UNITS_INFOSYS_PREFIX(70, zebi);
+BOOST_UNITS_INFOSYS_PREFIX(80, yobi);
+
+} // namespace information
+} // namespace units
+} // namespace boost
+
+#undef BOOST_UNITS_INFOSYS_PREFIX
+
+#endif // BOOST_UNITS_SYSTEMS_INFORMATION_PREFIXES_HPP_INCLUDED