1//===----------------------------------------------------------------------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9// Adaptation to Boost of the libcxx
10// Copyright 2010 Vicente J. Botet Escriba
11// Distributed under the Boost Software License, Version 1.0.
12// See http://www.boost.org/LICENSE_1_0.txt
13
14
15#include <boost/chrono/duration.hpp>
16#include <boost/detail/lightweight_test.hpp>
17
18
19#include "../rep.h"
20#include <iostream>
21
22#ifdef BOOST_NO_CXX11_CONSTEXPR
23#define BOOST_CONSTEXPR_ASSERT(C) BOOST_TEST(C)
24#else
25#include <boost/static_assert.hpp>
26#define BOOST_CONSTEXPR_ASSERT(C) BOOST_STATIC_ASSERT(C)
27#endif
28
29template <class D>
30void
31check_default()
32{
33 {
34 D d;
35 BOOST_TEST(d.count() == typename D::rep());
36 }
37}
38template <class D>
39void
40check_constexpr()
41{
42 BOOST_CONSTEXPR D d(0);
43 BOOST_CONSTEXPR_ASSERT(d.count() == typename D::rep());
44}
45
46template <class D, class R>
47void
48check_from_rep(R r)
49{
50 {
51 D d(r);
52 BOOST_TEST(d.count() == r);
53 }
54}
55
56int main()
57{
58 // exact conversions allowed for integral reps
59 {
60 boost::chrono::milliseconds ms(1);
61 boost::chrono::microseconds us = ms;
62 BOOST_TEST(us.count() == 1000);
63 {
64 BOOST_CONSTEXPR boost::chrono::milliseconds ms(1);
65 BOOST_CONSTEXPR boost::chrono::microseconds us = ms;
66 BOOST_CONSTEXPR_ASSERT(us.count() == 1000);
67 }
68 }
69 // inexact conversions allowed for floating point reps
70 {
71 boost::chrono::duration<double, boost::micro> us(1);
72 boost::chrono::duration<double, boost::milli> ms = us;
73 BOOST_TEST(ms.count() == 1./1000);
74 {
75 BOOST_CONSTEXPR boost::chrono::duration<double, boost::micro> us(1);
76 BOOST_CONSTEXPR boost::chrono::duration<double, boost::milli> ms = us;
77 BOOST_CONSTEXPR_ASSERT(ms.count() == 1./1000);
78 }
79 }
80 // Convert int to float
81 {
82 boost::chrono::duration<int> i(3);
83 boost::chrono::duration<double> d = i;
84 BOOST_TEST(d.count() == 3);
85 {
86 BOOST_CONSTEXPR boost::chrono::duration<int> i(3);
87 BOOST_CONSTEXPR boost::chrono::duration<double> d = i;
88 BOOST_CONSTEXPR_ASSERT(d.count() == 3);
89 }
90 }
91 // default constructor
92 {
93 check_default<boost::chrono::duration<Rep> >();
94 }
95 {
96 check_constexpr<boost::chrono::duration<int> >();
97 }
98 // constructor from rep
99 {
100 check_from_rep<boost::chrono::duration<int> >(r: 5);
101 {
102 BOOST_CONSTEXPR boost::chrono::duration<int> d(5);
103 BOOST_CONSTEXPR_ASSERT(d.count() == 5);
104 }
105 check_from_rep<boost::chrono::duration<int, boost::ratio<3, 2> > >(r: 5);
106 {
107 BOOST_CONSTEXPR boost::chrono::duration<int, boost::ratio<3, 2> > d(5);
108 BOOST_CONSTEXPR_ASSERT(d.count() == 5);
109 }
110 check_from_rep<boost::chrono::duration<Rep, boost::ratio<3, 2> > >(r: Rep(3));
111 {
112 BOOST_CONSTEXPR boost::chrono::duration<Rep, boost::ratio<3, 2> > d(Rep(3));
113 BOOST_CONSTEXPR_ASSERT(d.count() == Rep(3));
114 }
115 check_from_rep<boost::chrono::duration<double, boost::ratio<2, 3> > >(r: 5.5);
116 {
117 BOOST_CONSTEXPR boost::chrono::duration<double, boost::ratio<3, 2> > d(5.5);
118 BOOST_CONSTEXPR_ASSERT(d.count() == 5.5);
119 }
120
121
122 }
123 // constructor from other rep
124 {
125 boost::chrono::duration<double> d(5);
126 BOOST_TEST(d.count() == 5);
127 {
128 BOOST_CONSTEXPR boost::chrono::duration<double> d(5);
129 BOOST_CONSTEXPR_ASSERT(d.count() == 5);
130 }
131 }
132
133 return boost::report_errors();
134}
135

source code of boost/libs/chrono/test/duration/constructor_pass.cpp