Linux 2.6 - man page for gettimeofday (linux section 3posix)
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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
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 Technology -- 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 orig-
inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 GETTIMEOFDAY(P)
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