|TIME(3)||Library Functions Manual||TIME(3)|
time — get time of
time() function returns the value of
time in seconds since 0 hours, 0 minutes, 0 seconds, January 1, 1970,
Coordinated Universal Time.
A copy of the time value may be saved to the area indicated by the
pointer tloc. If tloc is a
NULL pointer, no value is stored.
Upon successful completion,
the value of time. Otherwise a value of ((time_t) -1)
is returned and the global variable errno is set to
indicate the error.
No errors are defined.
time() function conforms to
IEEE Std 1003.1-1990 (“POSIX.1”).
time() function appeared in
Version 2 AT&T UNIX. It returned a 32-bit
value measuring sixtieths of a second, leading to rollover every 2.26 years.
In Version 6 AT&T UNIX, the precision of
time() was changed to seconds, allowing 135.6 years
In NetBSD 6.0 the time_t type was changed to be 64 bits wide, including on 32-bit machines, making rollover a concern for the far distant future only. Note however that any code making the incorrect assumption that time_t is the same as long will fail on 32-bit machines in 2038.
|November 5, 2011||NetBSD-7.0.1|