GETTIMEOFDAY(P) POSIX Programmer's Manual GETTIMEOFDAY(P)
gettimeofday - get the date and time
int gettimeofday(struct timeval *restrict tp, void *restrict tzp);
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.
The gettimeofday() function shall return 0 and no value shall be reserved to indicate an error.
No errors are defined.
The following sections are informative.
ctime() , ftime() , the Base Definitions volume of IEEE Std 1003.1-2001, <sys/time.h>
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)