1 // Copyright 2013 Krzysztof Czainski
2 // Copyright 2013 Vicente J. Botet Escriba
3 // Distributed under the Boost Software License, Version 1.0.
4 // (See accompanying file LICENSE_1_0.txt or copy at
5 // http://www.boost.org/LICENSE_1_0.txt)
6
7 /*
8 * @file chrono_rounding.cpp
9 *
10 * @since 2013-11-22
11 * @author Krzysztof Czainski <1czajnik@gmail.com>
12 */
13
14 #include <boost/cstdint.hpp>
15 #include <boost/chrono/ceil.hpp>
16 #include <boost/chrono/floor.hpp>
17 #include <boost/chrono/round.hpp>
18
19 #include <boost/chrono/chrono_io.hpp>
20 #include <boost/detail/lightweight_test.hpp>
21
22 using namespace boost::chrono;
23
test_floor()24 void test_floor()
25 {
26 BOOST_TEST_EQ( seconds(-2), floor<seconds>( milliseconds(-2000) ) );
27 BOOST_TEST_EQ( seconds(-2), floor<seconds>( milliseconds(-1999) ) );
28 BOOST_TEST_EQ( seconds(-2), floor<seconds>( milliseconds(-1001) ) );
29 BOOST_TEST_EQ( seconds(-1), floor<seconds>( milliseconds(-1000) ) );
30 BOOST_TEST_EQ( seconds(-1), floor<seconds>( milliseconds(-999) ) );
31 BOOST_TEST_EQ( seconds(-1), floor<seconds>( milliseconds(-1) ) );
32 BOOST_TEST_EQ( seconds(0), floor<seconds>( milliseconds(0) ) );
33 BOOST_TEST_EQ( seconds(0), floor<seconds>( milliseconds(1) ) );
34 BOOST_TEST_EQ( seconds(0), floor<seconds>( milliseconds(999) ) );
35 BOOST_TEST_EQ( seconds(1), floor<seconds>( milliseconds(1000) ) );
36 BOOST_TEST_EQ( seconds(1), floor<seconds>( milliseconds(1001) ) );
37 BOOST_TEST_EQ( seconds(1), floor<seconds>( milliseconds(1999) ) );
38 BOOST_TEST_EQ( seconds(2), floor<seconds>( milliseconds(2000) ) );
39
40 {
41 // check that int32 isn't overflowed in intermediate calculations:
42 typedef duration<boost::int32_t> sec32;
43 typedef duration< boost::int32_t, boost::ratio<999,1000> > sec32_m1ms;
44 BOOST_TEST_EQ( sec32(-999000000), floor<sec32>( sec32_m1ms(-1000000000) ) );
45 BOOST_TEST_EQ( sec32( 999000000), floor<sec32>( sec32_m1ms( 1000000000) ) );
46 }
47 }
48
test_ceil()49 void test_ceil()
50 {
51 BOOST_TEST_EQ( seconds(-2), ceil<seconds>( milliseconds(-2000) ) );
52 BOOST_TEST_EQ( seconds(-1), ceil<seconds>( milliseconds(-1999) ) );
53 BOOST_TEST_EQ( seconds(-1), ceil<seconds>( milliseconds(-1001) ) );
54 BOOST_TEST_EQ( seconds(-1), ceil<seconds>( milliseconds(-1000) ) );
55 BOOST_TEST_EQ( seconds(0), ceil<seconds>( milliseconds(-999) ) );
56 BOOST_TEST_EQ( seconds(0), ceil<seconds>( milliseconds(-1) ) );
57 BOOST_TEST_EQ( seconds(0), ceil<seconds>( milliseconds(0) ) );
58 BOOST_TEST_EQ( seconds(1), ceil<seconds>( milliseconds(1) ) );
59 BOOST_TEST_EQ( seconds(1), ceil<seconds>( milliseconds(999) ) );
60 BOOST_TEST_EQ( seconds(1), ceil<seconds>( milliseconds(1000) ) );
61 BOOST_TEST_EQ( seconds(2), ceil<seconds>( milliseconds(1001) ) );
62 BOOST_TEST_EQ( seconds(2), ceil<seconds>( milliseconds(1999) ) );
63 BOOST_TEST_EQ( seconds(2), ceil<seconds>( milliseconds(2000) ) );
64 {
65 // check that int32 isn't overflowed in intermediate calculations:
66 typedef duration<boost::int32_t> sec32;
67 typedef duration< boost::int32_t, boost::ratio<999,1000> > sec32_m1ms;
68 BOOST_TEST_EQ( sec32(-999000000), ceil<sec32>( sec32_m1ms(-1000000000) ) );
69 BOOST_TEST_EQ( sec32( 999000000), ceil<sec32>( sec32_m1ms( 1000000000) ) );
70 }
71 }
72
test_round()73 void test_round()
74 {
75 // to even on tie
76 BOOST_TEST_EQ( seconds(-2), round<seconds>( milliseconds(-2000) ) );
77 BOOST_TEST_EQ( seconds(-2), round<seconds>( milliseconds(-1500) ) );
78 BOOST_TEST_EQ( seconds(-1), round<seconds>( milliseconds(-1499) ) );
79 BOOST_TEST_EQ( seconds(-1), round<seconds>( milliseconds(-1000) ) );
80 BOOST_TEST_EQ( seconds(0), round<seconds>( milliseconds(-500) ) );
81 BOOST_TEST_EQ( seconds(0), round<seconds>( milliseconds(-499) ) );
82 BOOST_TEST_EQ( seconds(0), round<seconds>( milliseconds(0) ) );
83 BOOST_TEST_EQ( seconds(0), round<seconds>( milliseconds(499) ) );
84 BOOST_TEST_EQ( seconds(0), round<seconds>( milliseconds(500) ) );
85 BOOST_TEST_EQ( seconds(1), round<seconds>( milliseconds(1000) ) );
86 BOOST_TEST_EQ( seconds(1), round<seconds>( milliseconds(1499) ) );
87 BOOST_TEST_EQ( seconds(2), round<seconds>( milliseconds(1500) ) );
88 BOOST_TEST_EQ( seconds(2), round<seconds>( milliseconds(2000) ) );
89 {
90 // check that int32 isn't overflowed in intermediate calculations:
91 typedef duration<boost::int32_t> sec32;
92 typedef duration< boost::int32_t, boost::ratio<999,1000> > sec32_m1ms;
93 BOOST_TEST_EQ( sec32(-999000000), round<sec32>( sec32_m1ms(-1000000000) ) );
94 BOOST_TEST_EQ( sec32( 999000000), round<sec32>( sec32_m1ms( 1000000000) ) );
95 }
96 }
97
main()98 int main()
99 {
100 test_floor();
101 test_ceil();
102 test_round();
103 return boost::report_errors();
104
105 }
106