linux man page for gettimeofday

GETTIMEOFDAY(P) 					     POSIX Programmer's Manual						   GETTIMEOFDAY(P)

NAME
       gettimeofday - get the date and time

SYNOPSIS
       #include <sys/time.h>

       int gettimeofday(struct timeval *restrict tp, void *restrict tzp);

DESCRIPTION
       The  gettimeofday()  function  shall  obtain  the  current time, expressed as seconds and microseconds since the Epoch, and store it in the
       timeval structure pointed to by tp. The resolution of the system clock is unspecified.

       If tzp is not a null pointer, the behavior is unspecified.

RETURN VALUE
       The gettimeofday() function shall return 0 and no value shall be reserved to indicate an error.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       ctime() , ftime() , the Base Definitions volume of IEEE Std 1003.1-2001, <sys/time.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and  the  original  IEEE
       and  The  Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
       online at http://www.opengroup.org/unix/online.html .

IEEE
/The Open Group						       2003							   GETTIMEOFDAY(P)