template<>
struct clock_time_conversion<utc_clock, system_clock> {
template<class Duration>
utc_time<common_type_t<Duration, seconds>>
operator()(const sys_time<Duration>& t) const;
};
template<class Duration>
utc_time<common_type_t<Duration, seconds>>
operator()(const sys_time<Duration>& t) const;
Returns:
utc_clock::from_sys(t).
template<>
struct clock_time_conversion<system_clock, utc_clock> {
template<class Duration>
sys_time<common_type_t<Duration, seconds>>
operator()(const utc_time<Duration>& t) const;
};
template<class Duration>
sys_time<common_type_t<Duration, seconds>>
operator()(const utc_time<Duration>& t) const;
Returns:
utc_clock::to_sys(t).