| 1 | // Copyright 2013 Krzysztof Czainski
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| 2 | // Distributed under the Boost Software License, Version 1.0.
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| 3 | // (See accompanying file LICENSE_1_0.txt or copy at
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| 4 | // http://www.boost.org/LICENSE_1_0.txt)
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| 5 |
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| 6 | /*
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| 7 | * @file chrono_rounding.cpp
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| 8 | *
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| 9 | * @since 2013-11-22
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| 10 | * @author Krzysztof Czainski <1czajnik@gmail.com>
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| 11 | */
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| 12 |
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| 13 | #include <boost/chrono/ceil.hpp>
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| 14 | #include <boost/chrono/floor.hpp>
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| 15 | #include <boost/chrono/round.hpp>
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| 16 |
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| 17 | #include <boost/chrono/chrono_io.hpp>
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| 18 | #define BOOST_TEST_MAIN "Boost.Chrono.rounding tests"
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| 19 | #include <boost/test/included/unit_test.hpp>
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| 20 |
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| 21 | BOOST_AUTO_TEST_SUITE( boost_chrono_rounding_ )
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| 22 |
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| 23 | using namespace boost::chrono;
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| 24 |
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| 25 | BOOST_AUTO_TEST_CASE( floor_ )
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| 26 | {
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| 27 | BOOST_CHECK_EQUAL( seconds(-2), floor<seconds>( milliseconds(-2000) ) );
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| 28 | BOOST_CHECK_EQUAL( seconds(-2), floor<seconds>( milliseconds(-1999) ) );
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| 29 | BOOST_CHECK_EQUAL( seconds(-2), floor<seconds>( milliseconds(-1001) ) );
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| 30 | BOOST_CHECK_EQUAL( seconds(-1), floor<seconds>( milliseconds(-1000) ) );
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| 31 | BOOST_CHECK_EQUAL( seconds(-1), floor<seconds>( milliseconds(-999) ) );
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| 32 | BOOST_CHECK_EQUAL( seconds(-1), floor<seconds>( milliseconds(-1) ) );
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| 33 | BOOST_CHECK_EQUAL( seconds(0), floor<seconds>( milliseconds(0) ) );
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| 34 | BOOST_CHECK_EQUAL( seconds(0), floor<seconds>( milliseconds(1) ) );
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| 35 | BOOST_CHECK_EQUAL( seconds(0), floor<seconds>( milliseconds(999) ) );
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| 36 | BOOST_CHECK_EQUAL( seconds(1), floor<seconds>( milliseconds(1000) ) );
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| 37 | BOOST_CHECK_EQUAL( seconds(1), floor<seconds>( milliseconds(1001) ) );
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| 38 | BOOST_CHECK_EQUAL( seconds(1), floor<seconds>( milliseconds(1999) ) );
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| 39 | BOOST_CHECK_EQUAL( seconds(2), floor<seconds>( milliseconds(2000) ) );
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| 40 | }
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| 41 |
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| 42 | BOOST_AUTO_TEST_CASE( ceil_ )
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| 43 | {
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| 44 | BOOST_CHECK_EQUAL( seconds(-2), ceil<seconds>( milliseconds(-2000) ) );
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| 45 | BOOST_CHECK_EQUAL( seconds(-1), ceil<seconds>( milliseconds(-1999) ) );
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| 46 | BOOST_CHECK_EQUAL( seconds(-1), ceil<seconds>( milliseconds(-1001) ) );
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| 47 | BOOST_CHECK_EQUAL( seconds(-1), ceil<seconds>( milliseconds(-1000) ) );
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| 48 | BOOST_CHECK_EQUAL( seconds(0), ceil<seconds>( milliseconds(-999) ) );
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| 49 | BOOST_CHECK_EQUAL( seconds(0), ceil<seconds>( milliseconds(-1) ) );
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| 50 | BOOST_CHECK_EQUAL( seconds(0), ceil<seconds>( milliseconds(0) ) );
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| 51 | BOOST_CHECK_EQUAL( seconds(1), ceil<seconds>( milliseconds(1) ) );
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| 52 | BOOST_CHECK_EQUAL( seconds(1), ceil<seconds>( milliseconds(999) ) );
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| 53 | BOOST_CHECK_EQUAL( seconds(1), ceil<seconds>( milliseconds(1000) ) );
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| 54 | BOOST_CHECK_EQUAL( seconds(2), ceil<seconds>( milliseconds(1001) ) );
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| 55 | BOOST_CHECK_EQUAL( seconds(2), ceil<seconds>( milliseconds(1999) ) );
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| 56 | BOOST_CHECK_EQUAL( seconds(2), ceil<seconds>( milliseconds(2000) ) );
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| 57 | }
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| 58 |
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| 59 | BOOST_AUTO_TEST_CASE( round_ )
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| 60 | {
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| 61 | // to even on tie
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| 62 | BOOST_CHECK_EQUAL( seconds(-2), round<seconds>( milliseconds(-2000) ) );
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| 63 | BOOST_CHECK_EQUAL( seconds(-2), round<seconds>( milliseconds(-1500) ) );
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| 64 | BOOST_CHECK_EQUAL( seconds(-1), round<seconds>( milliseconds(-1499) ) );
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| 65 | BOOST_CHECK_EQUAL( seconds(-1), round<seconds>( milliseconds(-1000) ) );
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| 66 | BOOST_CHECK_EQUAL( seconds(0), round<seconds>( milliseconds(-500) ) );
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| 67 | BOOST_CHECK_EQUAL( seconds(0), round<seconds>( milliseconds(-499) ) );
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| 68 | BOOST_CHECK_EQUAL( seconds(0), round<seconds>( milliseconds(0) ) );
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| 69 | BOOST_CHECK_EQUAL( seconds(0), round<seconds>( milliseconds(499) ) );
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| 70 | BOOST_CHECK_EQUAL( seconds(0), round<seconds>( milliseconds(500) ) );
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| 71 | BOOST_CHECK_EQUAL( seconds(1), round<seconds>( milliseconds(1000) ) );
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| 72 | BOOST_CHECK_EQUAL( seconds(1), round<seconds>( milliseconds(1499) ) );
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| 73 | BOOST_CHECK_EQUAL( seconds(2), round<seconds>( milliseconds(1500) ) );
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| 74 | BOOST_CHECK_EQUAL( seconds(2), round<seconds>( milliseconds(2000) ) );
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| 75 | }
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| 76 |
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| 77 | // check that int32 isn't overflowed in intermediate calculations:
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| 78 | BOOST_AUTO_TEST_CASE( overflow_ )
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| 79 | {
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| 80 | typedef duration<int32_t> sec32;
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| 81 | typedef duration< int32_t, boost::ratio<999,1000> > sec32_m1ms;
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| 82 | BOOST_CHECK_EQUAL( sec32(-999000000), floor<sec32>( sec32_m1ms(-1000000000) ) );
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| 83 | BOOST_CHECK_EQUAL( sec32( 999000000), floor<sec32>( sec32_m1ms( 1000000000) ) );
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| 84 | BOOST_CHECK_EQUAL( sec32(-999000000), ceil<sec32>( sec32_m1ms(-1000000000) ) );
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| 85 | BOOST_CHECK_EQUAL( sec32( 999000000), ceil<sec32>( sec32_m1ms( 1000000000) ) );
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| 86 | BOOST_CHECK_EQUAL( sec32(-999000000), round<sec32>( sec32_m1ms(-1000000000) ) );
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| 87 | BOOST_CHECK_EQUAL( sec32( 999000000), round<sec32>( sec32_m1ms( 1000000000) ) );
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| 88 | }
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| 89 |
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| 90 | BOOST_AUTO_TEST_SUITE_END()
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