days_in_year
if (days_in_year(year) == 366)
num_sec += days_in_year(--year) * 24 * 60 * 60;
if (!(days_in_year(tme->tm_year + 1900) == 366 &&
static int days_in_year(int);
for (year = YEAR_ZERO; unixtime >= days_in_year(year) * 86400;
unixtime -= 86400 * days_in_year(year);
*unixtime += 86400 * (int64_t)days_in_year(year);
days += days_in_year(i);
for (year = POSIX_BASE_YEAR; days >= days_in_year(year); year++)
days -= days_in_year(year);