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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
// { dg-options "-std=gnu++0x" }
// { dg-require-cstdint "" }
// Copyright (C) 2008, 2009 Free Software Foundation
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// 20.8.3 Class template duration [time.duration]
#include <chrono>
#include <type_traits>
#include <testsuite_hooks.h>
template<typename T>
struct type_emulator
{
type_emulator()
: i(T(0)) { }
type_emulator(T j)
: i(j) { }
type_emulator(const type_emulator& e)
: i(e.i) { }
type_emulator&
operator*=(type_emulator a)
{
i *= a.i;
return *this;
}
type_emulator&
operator+=(type_emulator a)
{
i += a.i;
return *this;
}
operator T ()
{ return i; }
T i;
};
template<typename T>
bool
operator==(type_emulator<T> a, type_emulator<T> b)
{ return a.i == b.i; }
template<typename T>
bool
operator<(type_emulator<T> a, type_emulator<T> b)
{ return a.i < b.i; }
template<typename T>
type_emulator<T>
operator+(type_emulator<T> a, type_emulator<T> b)
{ return a += b; }
template<typename T>
type_emulator<T>
operator*(type_emulator<T> a, type_emulator<T> b)
{ return a *= b; }
namespace std
{
template<typename T, typename U>
struct common_type<type_emulator<T>, U>
{ typedef typename common_type<T,U>::type type; };
template<typename T, typename U>
struct common_type<U, type_emulator<T>>
{ typedef typename common_type<U,T>::type type; };
template<typename T, typename U>
struct common_type<type_emulator<T>, type_emulator<U>>
{ typedef typename common_type<T,U>::type type; };
namespace chrono
{
template<typename T>
struct treat_as_floating_point<type_emulator<T>>
: is_floating_point<T>
{ };
}
}
typedef type_emulator<int> int_emulator;
typedef type_emulator<double> dbl_emulator;
// 20.8.3.1 duration constructors [time.duration.cons]
void
test01()
{
bool test __attribute__((unused)) = true;
using std::chrono::duration;
int r = 3;
duration<int> d1(r);
VERIFY(d1.count() == static_cast<duration<int>::rep>(r));
double s = 8.0;
duration<double> d2(s);
VERIFY(d2.count() == static_cast<duration<double>::rep>(s));
int_emulator ie(3);
duration<int_emulator> d3(ie);
VERIFY(d3.count() == static_cast<duration<int_emulator>::rep>(ie));
dbl_emulator de(4.0);
duration<dbl_emulator> d4(de);
VERIFY(d4.count() == static_cast<duration<dbl_emulator>::rep>(de));
}
int
main()
{
test01();
return 0;
}
|
