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annotate DEPENDENCIES/generic/include/boost/units/detail/prevent_redefinition.hpp @ 133:4acb5d8d80b6 tip
Don't fail environmental check if README.md exists (but .txt and no-suffix don't)
| author | Chris Cannam |
|---|---|
| date | Tue, 30 Jul 2019 12:25:44 +0100 |
| parents | 2665513ce2d3 |
| children |
| rev | line source |
|---|---|
| Chris@16 | 1 // Boost.Units - A C++ library for zero-overhead dimensional analysis and |
| Chris@16 | 2 // unit/quantity manipulation and conversion |
| Chris@16 | 3 // |
| Chris@16 | 4 // Copyright (C) 2003-2008 Matthias Christian Schabel |
| Chris@16 | 5 // Copyright (C) 2007-2008 Steven Watanabe |
| Chris@16 | 6 // |
| Chris@16 | 7 // Distributed under the Boost Software License, Version 1.0. (See |
| Chris@16 | 8 // accompanying file LICENSE_1_0.txt or copy at |
| Chris@16 | 9 // http://www.boost.org/LICENSE_1_0.txt) |
| Chris@16 | 10 |
| Chris@16 | 11 #ifndef BOOST_UNITS_DETAIL_PREVENT_REDEFINITION_HPP |
| Chris@16 | 12 #define BOOST_UNITS_DETAIL_PREVENT_REDEFINITION_HPP |
| Chris@16 | 13 |
| Chris@16 | 14 #include <boost/mpl/long.hpp> |
| Chris@16 | 15 |
| Chris@16 | 16 namespace boost { |
| Chris@16 | 17 |
| Chris@16 | 18 namespace units { |
| Chris@16 | 19 |
| Chris@16 | 20 namespace detail { |
| Chris@16 | 21 |
| Chris@16 | 22 struct no { no() {} char dummy; }; |
| Chris@16 | 23 struct yes { no dummy[2]; }; |
| Chris@16 | 24 |
| Chris@16 | 25 template<bool> struct ordinal_has_already_been_defined; |
| Chris@16 | 26 |
| Chris@16 | 27 template<> |
| Chris@16 | 28 struct ordinal_has_already_been_defined<true> { }; |
| Chris@16 | 29 |
| Chris@16 | 30 template<> |
| Chris@16 | 31 struct ordinal_has_already_been_defined<false> { typedef void type; }; |
| Chris@16 | 32 |
| Chris@16 | 33 } |
| Chris@16 | 34 |
| Chris@16 | 35 /// This must be in namespace boost::units so that ADL |
| Chris@16 | 36 /// will work. we need a mangled name because it must |
| Chris@16 | 37 /// be found by ADL |
| Chris@16 | 38 /// INTERNAL ONLY |
| Chris@16 | 39 template<class T> |
| Chris@16 | 40 detail::no |
| Chris@16 | 41 boost_units_is_registered(const T&) |
| Chris@16 | 42 { detail::no result; return(result); } |
| Chris@16 | 43 |
| Chris@16 | 44 /// INTERNAL ONLY |
| Chris@16 | 45 template<class T> |
| Chris@16 | 46 detail::no |
| Chris@16 | 47 boost_units_unit_is_registered(const T&) |
| Chris@16 | 48 { detail::no result; return(result); } |
| Chris@16 | 49 |
| Chris@16 | 50 } // namespace units |
| Chris@16 | 51 |
| Chris@16 | 52 } // namespace boost |
| Chris@16 | 53 |
| Chris@16 | 54 #endif // BOOST_UNITS_PREVENT_ORDINAL_REDEFINITION_IMPL_HPP |