ctime.3c (2010 09)

ctime(3C) ctime(3C)

WARNINGS

Users of asctime_r(), ctime_r(), gmtime_r()

, and localtime_r() should also note that these

functions now conform to POSIX.1c. The old prototypes of these functions are supported for compatibility

with existing DCE applications only.

The range of

tm_sec([0,61])

extends to 61 to allow for the occasional one or two leap seconds. How-

ever, the "seconds since the Epoch" value returned by

time() (see time (2)) and passed as the timer argu-

ment does not include accumulated leap seconds. The

tm structure generated by localtime() and

gmtime() will never reﬂect any leap seconds. Upon successful completion,

mktime() forces the value

of the

tm_sec component to the range [0,59].

AUTHOR

ctime() was developed by AT&T and HP.

SEE ALSO

time(2), getdate(3C), setlocale(3C), strftime(3C), tztab(4), environ(5), lang(5), langinfo(5),

thread_safety(5).

STANDARDS CONFORMANCE

ctime(): AES, SVID2, SVID3, XPG2, XPG3, XPG4, FIPS 151-2, POSIX.1, ANSI C

asctime(): AES, SVID2, SVID3, XPG2, XPG3, XPG4, FIPS 151-2, POSIX.1, ANSI C

daylight: AES, SVID2, SVID3, XPG2, XPG3, XPG4

difftime(): AES, SVID3, XPG4, ANSI C

gmtime(): AES, SVID2, SVID3, XPG2, XPG3, XPG4, FIPS 151-2, POSIX.1, ANSI C

localtime(): AES, SVID2, SVID3, XPG2, XPG3, XPG4, FIPS 151-2, POSIX.1, ANSI C

mktime(): AES, SVID3, XPG3, XPG4, FIPS 151-2, POSIX.1, ANSI C

timezone: AES, SVID3, XPG2, XPG3, XPG4

tzname: AES, XPG2, XPG3, XPG4, FIPS 151-2, POSIX.1

tzset(): AES, XPG2, XPG3, XPG4, FIPS 151-2, POSIX.1

asctime_r(), ctime_r(), localtime_r()

, gmtime_r():POSIX.1c

4 Hewlett-Packard Company − 4 − HP-UX 11i Version 3: September 2010