7  * Traditional implementation of leap year evaluation, but note that long
8  * is a signed type and the tests do cover negative year values. So this
11 static bool is_leap(long year)  in is_leap()  argument
13 	return year % 4 == 0 && (year % 100 != 0 || year % 400 == 0);  in is_leap()
19 static int last_day_of_month(long year, int month)  in last_day_of_month()  argument
22 		return 28 + is_leap(year);  in last_day_of_month()
31 static void advance_date(long *year, int *month, int *mday, int *yday)  in advance_date()  argument
33 	if (*mday != last_day_of_month(*year, *month)) {  in advance_date()
48 	++*year;  in advance_date()
63 	long year = 1970 - 80000;  in time64_to_tm_test_date_range()  local
79 			year, month, mdday, yday, days  in time64_to_tm_test_date_range()
81 		KUNIT_ASSERT_EQ_MSG(test, year - 1900, result.tm_year, FAIL_MSG);  in time64_to_tm_test_date_range()
86 		advance_date(&year, &month, &mdday, &yday);  in time64_to_tm_test_date_range()