ceph/src/boost/libs/chrono/test/time_point/time_point_cast_pass.cpp

   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 #include <boost/chrono/chrono.hpp>
  15 #include <boost/type_traits.hpp>
  16 #include <boost/detail/lightweight_test.hpp>
  17
  18 #if !defined(BOOST_NO_CXX11_STATIC_ASSERT)
  19 #define NOTHING ""
  20 #endif
  21 #ifdef BOOST_NO_CXX11_CONSTEXPR
  22 #define BOOST_CONSTEXPR_ASSERT(C) BOOST_TEST(C)
  23 #else
  24 #include <boost/static_assert.hpp>
  25 #define BOOST_CONSTEXPR_ASSERT(C) BOOST_STATIC_ASSERT(C)
  26 #endif
  27
  28 template <class FromDuration, class ToDuration>
  29 void
  30 test(const FromDuration& df, const ToDuration& d)
  31 {
  32     typedef boost::chrono::system_clock Clock;
  33     typedef boost::chrono::time_point<Clock, FromDuration> FromTimePoint;
  34     typedef boost::chrono::time_point<Clock, ToDuration> ToTimePoint;
  35     FromTimePoint f(df);
  36     ToTimePoint t(d);
  37 //~ #if defined(BOOST_NO_CXX11_DECLTYPE)
  38     //~ typedef BOOST_TYPEOF_TPL(boost::chrono::time_point_cast<ToDuration>(f)) R;
  39 //~ #else
  40     //~ typedef decltype(boost::chrono::time_point_cast<ToDuration>(f)) R;
  41 //~ #endif
  42     //~ BOOST_CHRONO_STATIC_ASSERT((boost::is_same<R, ToTimePoint>::value), NOTHING, ());
  43     BOOST_TEST(boost::chrono::time_point_cast<ToDuration>(f) == t);
  44 }
  45
  46 int main()
  47 {
  48     test(boost::chrono::milliseconds(7265000), boost::chrono::hours(2));
  49     test(boost::chrono::milliseconds(7265000), boost::chrono::minutes(121));
  50     test(boost::chrono::milliseconds(7265000), boost::chrono::seconds(7265));
  51     test(boost::chrono::milliseconds(7265000), boost::chrono::milliseconds(7265000));
  52     test(boost::chrono::milliseconds(7265000), boost::chrono::microseconds(7265000000LL));
  53     test(boost::chrono::milliseconds(7265000), boost::chrono::nanoseconds(7265000000000LL));
  54     test(boost::chrono::milliseconds(7265000),
  55          boost::chrono::duration<double, boost::ratio<3600> >(7265./3600));
  56     test(boost::chrono::duration<int, boost::ratio<2, 3> >(9),
  57          boost::chrono::duration<int, boost::ratio<3, 5> >(10));
  58     {
  59       typedef boost::chrono::system_clock Clock;
  60       typedef boost::chrono::time_point<Clock, boost::chrono::milliseconds> FromTimePoint;
  61       typedef boost::chrono::time_point<Clock, boost::chrono::hours> ToTimePoint;
  62       BOOST_CONSTEXPR FromTimePoint f(boost::chrono::milliseconds(7265000));
  63       BOOST_CONSTEXPR ToTimePoint tph = boost::chrono::time_point_cast<boost::chrono::hours>(f);
  64       BOOST_CONSTEXPR_ASSERT(tph.time_since_epoch().count() == 2);
  65     }
  66     return boost::report_errors();
  67 }