ceph/src/boost/libs/chrono/test/duration/rounding_pass.cpp

   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
  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
  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
  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
  98 int main()
  99 {
 100   test_floor();
 101   test_ceil();
 102   test_round();
 103   return boost::report_errors();
 104
 105 }