Boost C++ Libraries of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for an old version of Boost. Click here to view this page for the latest version.

Class template time_resolution_traits



// In header: <boost/date_time/time_resolution_traits.hpp>

template<typename frac_sec_type, time_resolutions res, 
         #if(defined(BOOST_MSVC)&&(_MSC_VER< 1300)) boost::int64_t resolution_adjust, 
         #else typename frac_sec_type::int_type resolution_adjust, 
         #endif unsigned short frac_digits, typename v_type = boost::int32_t> 
class time_resolution_traits {
  // types
  typedef frac_sec_type::int_type  fractional_seconds_type;
  typedef frac_sec_type::int_type  tick_type;              
  typedef frac_sec_type::impl_type impl_type;              
  typedef v_type                   day_type;               
  typedef v_type                   hour_type;              
  typedef v_type                   min_type;               
  typedef v_type                   sec_type;               

  // public static functions
  static fractional_seconds_type as_number(impl_type) ;
  static bool is_adapted() ;
  static time_resolutions resolution() ;
  static unsigned short num_fractional_digits() ;
  static fractional_seconds_type res_adjust() ;
  static tick_type 
  to_tick_count(hour_type, min_type, sec_type, fractional_seconds_type) ;

  // public member functions
   BOOST_STATIC_CONSTANT(boost::int64_t, ticks_per_second = resolution_adjust) ;
                         ticks_per_second = resolution_adjust) ;


time_resolution_traits public static functions

  1. static fractional_seconds_type as_number(impl_type i) ;
  2. static bool is_adapted() ;
  3. static time_resolutions resolution() ;
  4. static unsigned short num_fractional_digits() ;
  5. static fractional_seconds_type res_adjust() ;
  6. static tick_type 
    to_tick_count(hour_type hours, min_type minutes, sec_type seconds, 
                  fractional_seconds_type fs) ;
    Any negative argument results in a negative tick_count.

time_resolution_traits public member functions

  1.  BOOST_STATIC_CONSTANT(boost::int64_t, ticks_per_second = resolution_adjust) ;
  2.  BOOST_STATIC_CONSTANT(fractional_seconds_type, 
                           ticks_per_second = resolution_adjust) ;