diff options
Diffstat (limited to 'sqmail-4.3.07/src/datetime.c')
-rw-r--r-- | sqmail-4.3.07/src/datetime.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/sqmail-4.3.07/src/datetime.c b/sqmail-4.3.07/src/datetime.c new file mode 100644 index 0000000..3db5f7f --- /dev/null +++ b/sqmail-4.3.07/src/datetime.c @@ -0,0 +1,53 @@ +/* 19950925 */ +#include "datetime.h" + +void datetime_tai(struct datetime *dt,datetime_sec t) +{ + int day; + int tod; + int year; + int yday; + int wday; + int mon; + + tod = t % 86400; + day = t / 86400; + if (tod < 0) { tod += 86400; --day; } + + dt->hour = tod / 3600; + tod %= 3600; + dt->min = tod / 60; + dt->sec = tod % 60; + + wday = (day + 4) % 7; if (wday < 0) wday += 7; + dt->wday = wday; + + day -= 11017; + /* day 0 is march 1, 2000 */ + year = 5 + day / 146097; + day = day % 146097; if (day < 0) { day += 146097; --year; } + /* from now on, day is nonnegative */ + year *= 4; + if (day == 146096) { year += 3; day = 36524; } + else { year += day / 36524; day %= 36524; } + year *= 25; + year += day / 1461; + day %= 1461; + year *= 4; + yday = (day < 306); + if (day == 1460) { year += 3; day = 365; } + else { year += day / 365; day %= 365; } + yday += day; + + day *= 10; + mon = (day + 5) / 306; + day = day + 5 - 306 * mon; + day /= 10; + if (mon >= 10) { yday -= 306; ++year; mon -= 10; } + else { yday += 59; mon += 2; } + + dt->yday = yday; + dt->year = year - 1900; + dt->mon = mon; + dt->mday = day + 1; +} |