projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | // Boost.Units - A C++ library for zero-overhead dimensional analysis and |
| 2 | // unit/quantity manipulation and conversion | |
| 3 | // | |
| 4 | // Copyright (C) 2003-2008 Matthias Christian Schabel | |
| 5 | // Copyright (C) 2007-2008 Steven Watanabe | |
| 6 | // | |
| 7 | // Distributed under the Boost Software License, Version 1.0. (See | |
| 8 | // accompanying file LICENSE_1_0.txt or copy at | |
| 9 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 10 | ||
| 11 | #ifndef BOOST_UNITS_DETAIL_PREVENT_REDEFINITION_HPP | |
| 12 | #define BOOST_UNITS_DETAIL_PREVENT_REDEFINITION_HPP | |
| 13 | ||
| 14 | #include <boost/mpl/long.hpp> | |
| 15 | ||
| 16 | namespace boost { | |
| 17 | ||
| 18 | namespace units { | |
| 19 | ||
| 20 | namespace detail { | |
| 21 | ||
| 22 | struct no { no() {} char dummy; }; | |
| 23 | struct yes { no dummy[2]; }; | |
| 24 | ||
| 25 | template<bool> struct ordinal_has_already_been_defined; | |
| 26 | ||
| 27 | template<> | |
| 28 | struct ordinal_has_already_been_defined<true> { }; | |
| 29 | ||
| 30 | template<> | |
| 31 | struct ordinal_has_already_been_defined<false> { typedef void type; }; | |
| 32 | ||
| 33 | } | |
| 34 | ||
| 35 | /// This must be in namespace boost::units so that ADL | |
| 36 | /// will work. we need a mangled name because it must | |
| 37 | /// be found by ADL | |
| 38 | /// INTERNAL ONLY | |
| 39 | template<class T> | |
| 40 | detail::no | |
| 41 | boost_units_is_registered(const T&) | |
| 42 | { detail::no result; return(result); } | |
| 43 | ||
| 44 | /// INTERNAL ONLY | |
| 45 | template<class T> | |
| 46 | detail::no | |
| 47 | boost_units_unit_is_registered(const T&) | |
| 48 | { detail::no result; return(result); } | |
| 49 | ||
| 50 | } // namespace units | |
| 51 | ||
| 52 | } // namespace boost | |
| 53 | ||
| 54 | #endif // BOOST_UNITS_PREVENT_ORDINAL_REDEFINITION_IMPL_HPP |