libstdc++-v3/testsuite/20_util/duration_cast/rounding_c++11.cc

   1 // Copyright (C) 2016-2021 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-options "-std=gnu++11" }
  19 // { dg-do compile { target c++11 } }
  20
  21 #include <chrono>
  22
  23 using std::chrono::seconds;
  24 using std::chrono::milliseconds;
  25
  26 using fp_seconds = std::chrono::duration<float>;
  27
  28 static_assert( std::chrono::__detail::ceil<seconds>(milliseconds(1000))
  29                == seconds(1) );
  30 static_assert( std::chrono::__detail::ceil<seconds>(milliseconds(1001))
  31                == seconds(2) );
  32 static_assert( std::chrono::__detail::ceil<seconds>(milliseconds(1500))
  33                == seconds(2) );
  34 static_assert( std::chrono::__detail::ceil<seconds>(milliseconds(1999))
  35                == seconds(2) );
  36 static_assert( std::chrono::__detail::ceil<seconds>(milliseconds(2000))
  37                == seconds(2) );
  38 static_assert( std::chrono::__detail::ceil<seconds>(milliseconds(2001))
  39                == seconds(3) );
  40 static_assert( std::chrono::__detail::ceil<seconds>(milliseconds(2500))
  41                == seconds(3) );
  42 static_assert( std::chrono::__detail::ceil<fp_seconds>(milliseconds(500))
  43                == fp_seconds{0.5f} );