diff options
Diffstat (limited to 'kernel/time/time.c')
| -rw-r--r-- | kernel/time/time.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/kernel/time/time.c b/kernel/time/time.c index 86751c68e08d..be115b020d27 100644 --- a/kernel/time/time.c +++ b/kernel/time/time.c @@ -322,6 +322,13 @@ EXPORT_SYMBOL(timespec_trunc); * -year/100+year/400 terms, and add 10.] * * This algorithm was first published by Gauss (I think). + * + * A leap second can be indicated by calling this function with sec as + * 60 (allowable under ISO 8601). The leap second is treated the same + * as the following second since they don't exist in UNIX time. + * + * An encoding of midnight at the end of the day as 24:00:00 - ie. midnight + * tomorrow - (allowable under ISO 8601) is supported. */ time64_t mktime64(const unsigned int year0, const unsigned int mon0, const unsigned int day, const unsigned int hour, @@ -338,7 +345,7 @@ time64_t mktime64(const unsigned int year0, const unsigned int mon0, return ((((time64_t) (year/4 - year/100 + year/400 + 367*mon/12 + day) + year*365 - 719499 - )*24 + hour /* now have hours */ + )*24 + hour /* now have hours - midnight tomorrow handled here */ )*60 + min /* now have minutes */ )*60 + sec; /* finally seconds */ } |