Year Date::year() const {
Year y = (serialNumber_ / 365)+1900;
// yearOffset(y) is December 31st of the preceding year
if (serialNumber_ <= yearOffset(y))
--y;
return y;
}
Date::Date(Day d, Month m, Year y) {
QL_REQUIRE(y > 1900 && y < 2200,
"year " << y << " out of bound. It must be in [1901,2199]");
QL_REQUIRE(Integer(m) > 0 && Integer(m) < 13,
"month " << Integer(m)
<< " outside January-December range [1,12]");
bool leap = isLeap(y);
Day len = monthLength(m,leap), offset = monthOffset(m,leap);
QL_REQUIRE(d <= len && d > 0,
"day outside month (" << Integer(m) << ") day-range "
<< "[1," << len << "]");
serialNumber_ = d + offset + yearOffset(y);
}
inline Day Date::dayOfYear() const {
return serialNumber_ - yearOffset(year());
}
