Date: Fri, 6 Oct 2006 11:39:37 -0700 From: Chuck Swiger <cswiger@mac.com> To: Martin McCormick <martin@dc.cis.okstate.edu> Cc: freebsd-questions@freebsd.org Subject: Re: A Question of How to Handle Numerical Notation Message-ID: <C22D4144-772A-47EB-93AA-7284F4C2B10D@mac.com> In-Reply-To: <200610061821.k96ILWHA008725@dc.cis.okstate.edu> References: <200610061821.k96ILWHA008725@dc.cis.okstate.edu>
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On Oct 6, 2006, at 11:21 AM, Martin McCormick wrote:
> My thanks to you and to one other individual who have
> written responses to my questions.
You're welcome.
> I will talk to the people who extracted the file and see
> if there is a possibility we got the wrong data in that field.
> One would hope that the time stamp data are normal 32-bit values
> that can be sucked in by a %lx in sscanf.
No, they aren't, but there is sample code at the end of RFC-4122
which you might want to review. In particular:
typedef unsigned64_t uuid_time_t;
void get_system_time(uuid_time_t *uuid_time)
{
struct timeval tp;
gettimeofday(&tp, (struct timezone *)0);
/* Offset between UUID formatted times and Unix formatted times.
UUID UTC base time is October 15, 1582.
Unix base time is January 1, 1970.*/
*uuid_time = ((unsigned64)tp.tv_sec * 10000000)
+ ((unsigned64)tp.tv_usec * 10)
+ I64(0x01B21DD213814000);
}
--
-Chuck
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