ceph/src/boost/libs/chrono/include/boost/chrono/floor.hpp

   1 //  boost/chrono/round.hpp  ------------------------------------------------------------//
   2
   3 //  (C) Copyright Howard Hinnant
   4 //  Copyright 2011 Vicente J. Botet Escriba
   5
   6 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
   7 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   8
   9 //  See http://www.boost.org/libs/chrono for documentation.
  10
  11 #ifndef BOOST_CHRONO_FLOOR_HPP
  12 #define BOOST_CHRONO_FLOOR_HPP
  13
  14 #include <boost/chrono/duration.hpp>
  15
  16 namespace boost
  17 {
  18   namespace chrono
  19   {
  20
  21     /**
  22      * rounds down
  23      */
  24     template <class To, class Rep, class Period>
  25     To floor(const duration<Rep, Period>& d)
  26     {
  27       To t = duration_cast<To>(d);
  28       if (t>d) --t;
  29       return t;
  30     }
  31
  32
  33   } // namespace chrono
  34 } // namespace boost
  35
  36 #endif