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add method for local times

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[SVN r26111]
This commit is contained in:
Jeff Garland
2004-11-04 12:40:37 +00:00
parent 950d235994
commit 02e78e9bb7
1 changed files with 15 additions and 0 deletions
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15
include/boost/date_time/microsec_time_clock.hpp
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@@ -42,6 +42,21 @@ namespace date_time {
typedef typename time_type::date_type date_type;
typedef typename time_type::time_duration_type time_duration_type;
typedef typename time_duration_type::rep_type resolution_traits_type;
//! return a local time object for the given zone, based on computer clock
template<class time_zone_type>
static time_type local_time(shared_ptr<time_zone_type> tz_ptr) {
typedef typename time_type::utc_time_type utc_time_type;
typedef second_clock<utc_time_type> second_clock;
// we'll need to know the utc_offset this machine has
// in order to get a utc_time_type set to utc
utc_time_type utc_time = second_clock::universal_time();
time_duration_type utc_offset = second_clock::local_time() - utc_time;
// use micro clock to get a local time with sub seconds
// and adjust it to get a true utc time reading with sub seconds
utc_time = microsec_clock<utc_time_type>::local_time() - utc_offset;
return time_type(utc_time, tz_ptr);
}
#ifdef BOOST_HAS_GETTIMEOFDAY
//! Return the local time based on computer clock settings