static time_rep_type add_time_duration(const time_rep_type& base,
time_duration_type td)
{
if(base.day.is_special() || td.is_special()) {
return split_timedate_system::get_time_rep(base.day, td);
}
if (td.is_negative()) {
time_duration_type td1 = td.invert_sign();
return subtract_time_duration(base,td1);
}
wrap_int_type day_offset(base.time_of_day.ticks());
date_duration_type day_overflow(static_cast< typename date_duration_type::duration_rep_type >(day_offset.add(td.ticks())));
return time_rep_type(base.day+day_overflow,
time_duration_type(0,0,0,day_offset.as_int()));
}
static time_rep_type add_time_duration(const time_rep_type& base,
time_duration_type td)
{
if(base.day.is_special() || td.is_special()) {
return split_timedate_system::get_time_rep(base.day, td);
}
if (td.is_negative()) {
time_duration_type td1 = td.invert_sign();
return subtract_time_duration(base,td1);
}
wrap_int_type day_offset(base.time_of_day.ticks());
int_type doff = day_offset.add(td.ticks());
// std::cout << "day overflow: " << doff << std::endl;
// std::cout << "ticks: " << td.ticks() << std::endl;
date_duration_type day_overflow(static_cast<int_type>(doff));
// std::cout << "base: " << to_simple_string(base.day) << std::endl;
// std::cout << "overflow " << day_overflow.days() << std::endl;
return time_rep_type(base.day+day_overflow,
time_duration_type(0,0,0,day_offset.as_int()));
}
static time_rep_type subtract_time_duration(const time_rep_type& base,
const time_duration_type& td)
{
if(base.day.is_special() || td.is_special())
{
return split_timedate_system::get_time_rep(base.day, -td);
}
if (td.is_negative()) {
time_duration_type td1 = td.invert_sign();
return add_time_duration(base,td1);
}
//std::cout << td.ticks() << std::endl;
wrap_int_type day_offset(base.time_of_day.ticks());
date_duration_type day_overflow(static_cast<int_type>(day_offset.subtract(td.ticks())));
// std::cout << "sub: " << base.time_of_day.ticks() << "|"
// << day_offset.as_int() << "|"
// << day_overflow.days() << std::endl;
return time_rep_type(base.day-day_overflow,
time_duration_type(0,0,0,day_offset.as_int()));
}