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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/* boost random/detail/uniform_int_float.hpp header file
*
* Copyright Jens Maurer 2000-2001
* 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)
*
* See http://www.boost.org for most recent version including documentation.
*
* $Id: pass_through_engine.hpp 58649 2010-01-02 21:23:17Z steven_watanabe $
*
*/
#ifndef BOOST_RANDOM_DETAIL_PASS_THROUGH_ENGINE_HPP
#define BOOST_RANDOM_DETAIL_PASS_THROUGH_ENGINE_HPP
#include <boost/config.hpp>
#include <boost/random/detail/ptr_helper.hpp>
#include <boost/random/detail/disable_warnings.hpp>
namespace boost {
namespace random {
namespace detail {
template<class UniformRandomNumberGenerator>
class pass_through_engine
{
private:
typedef ptr_helper<UniformRandomNumberGenerator> helper_type;
public:
typedef typename helper_type::value_type base_type;
typedef typename base_type::result_type result_type;
explicit pass_through_engine(UniformRandomNumberGenerator rng)
// make argument an rvalue to avoid matching Generator& constructor
: _rng(static_cast<typename helper_type::rvalue_type>(rng))
{ }
result_type min BOOST_PREVENT_MACRO_SUBSTITUTION () const { return (base().min)(); }
result_type max BOOST_PREVENT_MACRO_SUBSTITUTION () const { return (base().max)(); }
base_type& base() { return helper_type::ref(_rng); }
const base_type& base() const { return helper_type::ref(_rng); }
result_type operator()() { return base()(); }
private:
UniformRandomNumberGenerator _rng;
};
#ifndef BOOST_NO_STD_LOCALE
template<class UniformRandomNumberGenerator, class CharT, class Traits>
std::basic_ostream<CharT,Traits>&
operator<<(
std::basic_ostream<CharT,Traits>& os
, const pass_through_engine<UniformRandomNumberGenerator>& ud
)
{
return os << ud.base();
}
template<class UniformRandomNumberGenerator, class CharT, class Traits>
std::basic_istream<CharT,Traits>&
operator>>(
std::basic_istream<CharT,Traits>& is
, const pass_through_engine<UniformRandomNumberGenerator>& ud
)
{
return is >> ud.base();
}
#else // no new streams
template<class UniformRandomNumberGenerator>
inline std::ostream&
operator<<(std::ostream& os,
const pass_through_engine<UniformRandomNumberGenerator>& ud)
{
return os << ud.base();
}
template<class UniformRandomNumberGenerator>
inline std::istream&
operator>>(std::istream& is,
const pass_through_engine<UniformRandomNumberGenerator>& ud)
{
return is >> ud.base();
}
#endif
} // namespace detail
} // namespace random
} // namespace boost
#include <boost/random/detail/enable_warnings.hpp>
#endif // BOOST_RANDOM_DETAIL_PASS_THROUGH_ENGINE_HPP
|
Swift