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TIME(3)               DragonFly Library Functions Manual               TIME(3)


NAME

     time -- get time of day


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <time.h>

     time_t
     time(time_t *tloc);


DESCRIPTION

     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.


ERRORS

     The time() function may fail for any of the reasons described in
     gettimeofday(2).


SEE ALSO

     gettimeofday(2), ctime(3)


STANDARDS

     The time function conforms to IEEE Std 1003.1-2001 (``POSIX.1'').


HISTORY

     A time() function appeared in Version 6 AT&T UNIX.


BUGS

     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
     case.

DragonFly 3.5                    July 18, 2003                   DragonFly 3.5

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