blob: 1f23575370e87ff9ef1d1d6d9a1c469d3e9d0a24 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
// 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) 2007-2008 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_DETAIL_PREVENT_REDEFINITION_HPP
#define BOOST_UNITS_DETAIL_PREVENT_REDEFINITION_HPP
#include <boost/mpl/long.hpp>
namespace boost {
namespace units {
namespace detail {
struct no { BOOST_CONSTEXPR no() : dummy() {} char dummy; };
struct yes { no dummy[2]; };
template<bool> struct ordinal_has_already_been_defined;
template<>
struct ordinal_has_already_been_defined<true> { };
template<>
struct ordinal_has_already_been_defined<false> { typedef void type; };
}
/// This must be in namespace boost::units so that ADL
/// will work. we need a mangled name because it must
/// be found by ADL
/// INTERNAL ONLY
template<class T>
BOOST_CONSTEXPR
detail::no
boost_units_is_registered(const T&)
{ return(detail::no()); }
/// INTERNAL ONLY
template<class T>
BOOST_CONSTEXPR
detail::no
boost_units_unit_is_registered(const T&)
{ return(detail::no()); }
} // namespace units
} // namespace boost
#endif // BOOST_UNITS_PREVENT_ORDINAL_REDEFINITION_IMPL_HPP
|