1/* boost random/detail/ptr_helper.hpp header file
2 *
3 * Copyright Jens Maurer 2002
4 * Distributed under the Boost Software License, Version 1.0. (See
5 * accompanying file LICENSE_1_0.txt or copy at
6 * http://www.boost.org/LICENSE_1_0.txt)
7 *
8 * See http://www.boost.org for most recent version including documentation.
9 *
10 * $Id$
11 *
12 */
13
14#ifndef BOOST_RANDOM_DETAIL_PTR_HELPER_HPP
15#define BOOST_RANDOM_DETAIL_PTR_HELPER_HPP
16
17#include <boost/config.hpp>
18
19
20namespace boost {
21namespace random {
22namespace detail {
23
24// type_traits could help here, but I don't want to depend on type_traits.
25template<class T>
26struct ptr_helper
27{
28 typedef T value_type;
29 typedef T& reference_type;
30 typedef const T& rvalue_type;
31 static reference_type ref(T& r) { return r; }
32 static const T& ref(const T& r) { return r; }
33};
34
35template<class T>
36struct ptr_helper<T&>
37{
38 typedef T value_type;
39 typedef T& reference_type;
40 typedef T& rvalue_type;
41 static reference_type ref(T& r) { return r; }
42 static const T& ref(const T& r) { return r; }
43};
44
45template<class T>
46struct ptr_helper<T*>
47{
48 typedef T value_type;
49 typedef T& reference_type;
50 typedef T* rvalue_type;
51 static reference_type ref(T * p) { return *p; }
52 static const T& ref(const T * p) { return *p; }
53};
54
55} // namespace detail
56} // namespace random
57} // namespace boost
58
59//
60// BOOST_RANDOM_PTR_HELPER_SPEC --
61//
62// Helper macro for broken compilers defines specializations of
63// ptr_helper.
64//
65# define BOOST_RANDOM_PTR_HELPER_SPEC(T)
66
67#endif // BOOST_RANDOM_DETAIL_PTR_HELPER_HPP
68