) 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, no value is stored.
Upon successful completion,
returns the value of time.
Otherwise a value of
is returned and the global variable
is set to indicate the error.
) function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'') .
) function appeared in 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 between rollovers.
In NetBSD6.0 the 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 is the same as will fail on 32-bit machines in 2038.