DragonFly On-Line Manual Pages
TIME(3) DragonFly Library Functions Manual TIME(3)
time -- get time of day
Standard C Library (libc, -lc)
The time() function returns the value of time in seconds since 0 hours, 0
minutes, 0 seconds, January 1, 1970, Coordinated Universal Time. If an
error occurs, time() returns the value (time_t)-1.
The return value is also stored in *tloc, provided that tloc is non-null.
The time() function may fail for any of the reasons described in
The time function conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
A time() function appeared in Version 6 AT&T UNIX.
Neither ISO/IEC 9899:1999 (``ISO C99'') nor IEEE Std 1003.1-2001
(``POSIX.1'') requires time() to set errno on failure; thus, it is impos-
sible for an application to distinguish the valid time value -1 (repre-
senting the last UTC second of 1969) from the error return value.
Systems conforming to earlier versions of the C and POSIX standards
(including older versions of FreeBSD) did not set *tloc in the error
DragonFly 5.3 July 18, 2003 DragonFly 5.3
TIME(3am) GNU Awk Extension Modules TIME(3am)
time - time functions for gawk
time = gettimeofday()
ret = sleep(amount)
The time extension adds two functions named gettimeofday() and sleep(),
This function returns the number of seconds since the Epoch as a
floating-point value. It should have subsecond precision. It
returns -1 upon error and sets ERRNO to indicate the problem.
This function attempts to sleep for the given amount of seconds,
which may include a fractional portion. If seconds is negative,
or the attempt to sleep fails, then it returns -1 and sets
ERRNO. Otherwise, the function should return 0 after sleeping
for the indicated amount of time.
printf "It is now %g seconds since the Epoch\n", gettimeofday()
printf "Pausing for a while... " ; sleep(2.5) ; print "done"
GAWK: Effective AWK Programming, filefuncs(3am), fnmatch(3am),
fork(3am), inplace(3am), ordchr(3am), readdir(3am), readfile(3am),
gettimeofday(2), nanosleep(2), select(2).
Arnold Robbins, email@example.com.
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Free Software Foundation Jan 15 2013 TIME(3am)