Function IsLeapYear

be/src/runtime/datetime-parser-common.h:339–341

    WARN_UNUSED_RESULT;

inline bool IsLeapYear(int year) {
  return year % 4 == 0 && (year % 100 != 0 || year % 400 == 0);
}

/// Given the year, month and the day in month calculates the day in year.
int GetDayInYear(int year, int month, int day_in_month);