OutItrT put(OutItrT next,
std::ios_base& a_ios,
char_type fill_char,
const date_type& d) const
{
if (d.is_special()) {
return do_put_special(next, a_ios, fill_char, d.as_special());
}
//The following line of code required the date to support a to_tm function
return do_put_tm(next, a_ios, fill_char, to_tm(d), m_format);
}
static time_rep_type get_time_rep(const date_type& day,
const time_duration_type& tod,
date_time::dst_flags /* dst */ = not_dst)
{
if(day.is_special() || tod.is_special()) {
if(day.is_not_a_date() || tod.is_not_a_date_time()) {
return time_rep_type(date_type(not_a_date_time),
time_duration_type(not_a_date_time));
}
else if(day.is_pos_infinity()) {
if(tod.is_neg_infinity()) {
return time_rep_type(date_type(not_a_date_time),
time_duration_type(not_a_date_time));
}
else {
return time_rep_type(day, time_duration_type(pos_infin));
}
}
else if(day.is_neg_infinity()) {
if(tod.is_pos_infinity()) {
return time_rep_type(date_type(not_a_date_time),
time_duration_type(not_a_date_time));
}
else {
return time_rep_type(day, time_duration_type(neg_infin));
}
}
else if(tod.is_pos_infinity()) {
if(day.is_neg_infinity()) {
return time_rep_type(date_type(not_a_date_time),
time_duration_type(not_a_date_time));
}
else {
return time_rep_type(date_type(pos_infin), tod);
}
}
else if(tod.is_neg_infinity()) {
if(day.is_pos_infinity()) {
return time_rep_type(date_type(not_a_date_time),
time_duration_type(not_a_date_time));
}
else {
return time_rep_type(date_type(neg_infin), tod);
}
}
}
return time_rep_type(day, tod);
}
duration_type operator-(const date_type& d) const
{
if (!this->is_special() && !d.is_special())
{
// The duration underlying type may be wider than the date underlying type.
// Thus we calculate the difference in terms of two durations from some common fixed base date.
typedef typename duration_type::duration_rep_type duration_rep_type;
return duration_type(static_cast< duration_rep_type >(days_) - static_cast< duration_rep_type >(d.days_));
}
else
{
// In this case the difference will be a special value, too
date_rep_type val = date_rep_type(days_) - date_rep_type(d.days_);
return duration_type(val.as_special());
}
}
