31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
};
31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
};
+static int month_offset[] = {
+ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
+};
+
- int MonthOffset[] = { 0,31,59,90,120,151,181,212,243,273,304,334 };
- /*
- * Number of leap corrections to apply up to end of last year
- */
- leapsToDate = lastYear/4 - lastYear/100 + lastYear/400;
+ /* Number of leap corrections to apply up to end of last year */
+ leaps_to_date = last_year / 4 - last_year / 100 + last_year / 400;
/*
* This year is a leap year if it is divisible by 4 except when it is
* divisible by 100 unless it is divisible by 400
*
/*
* This year is a leap year if it is divisible by 4 except when it is
* divisible by 100 unless it is divisible by 400
*
- * e.g. 1904 was a leap year, 1900 was not, 1996 is, and 2000 will be
+ * e.g. 1904 was a leap year, 1900 was not, 1996 is, and 2000 is.
- if((tm->tm_year%4==0) &&
- ((tm->tm_year%100!=0) || (tm->tm_year%400==0)) &&
- (tm->tm_mon>2)) {
- /*
- * We are past Feb. 29 in a leap year
- */
- day=1;
+ if (tm->tm_year % 4 == 0 &&
+ ((tm->tm_year % 100 != 0) || (tm->tm_year % 400 == 0)) &&
+ tm->tm_mon > 2) {
+ /* We are past Feb. 29 in a leap year */
+ day = 1;
* Assumes input in normal date format, i.e. 1980-12-31 23:59:59
* => year=1980, mon=12, day=31, hour=23, min=59, sec=59.
*
* [For the Julian calendar (which was used in Russia before 1917,
* Britain & colonies before 1752, anywhere else before 1582,
* and is still in use by some communities) leave out the
* Assumes input in normal date format, i.e. 1980-12-31 23:59:59
* => year=1980, mon=12, day=31, hour=23, min=59, sec=59.
*
* [For the Julian calendar (which was used in Russia before 1917,
* Britain & colonies before 1752, anywhere else before 1582,
* and is still in use by some communities) leave out the
*
* This algorithm was first published by Gauss (I think).
*
* WARNING: this function will overflow on 2106-02-07 06:28:16 on
*
* This algorithm was first published by Gauss (I think).
*
* WARNING: this function will overflow on 2106-02-07 06:28:16 on
-unsigned long
-mktime (unsigned int year, unsigned int mon,
- unsigned int day, unsigned int hour,
- unsigned int min, unsigned int sec)
+unsigned long rtc_mktime(const struct rtc_time *tm)
- if (0 >= (int) (mon -= 2)) { /* 1..12 -> 11,12,1..10 */
- mon += 12; /* Puts Feb last since it has leap day */
+ int mon = tm->tm_mon;
+ int year = tm->tm_year;
+ int days, hours;
+
+ mon -= 2;
+ if (0 >= (int)mon) { /* 1..12 -> 11, 12, 1..10 */
+ mon += 12; /* Puts Feb last since it has leap day */
- return (((
- (unsigned long) (year/4 - year/100 + year/400 + 367*mon/12 + day) +
- year*365 - 719499
- )*24 + hour /* now have hours */
- )*60 + min /* now have minutes */
- )*60 + sec; /* finally seconds */
+ days = (unsigned long)(year / 4 - year / 100 + year / 400 +
+ 367 * mon / 12 + tm->tm_mday) +
+ year * 365 - 719499;
+ hours = days * 24 + tm->tm_hour;
+ return (hours * 60 + tm->tm_min) * 60 + tm->tm_sec;