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<== Date ==> <== Thread ==>

Subject: Re: EPICS UTC Time conversion
From: Eric Norum <wenorum@lbl.gov>
To: Andrew Johnson <anj@aps.anl.gov>
Cc: "tech-talk@aps.anl.gov Talk" <tech-talk@aps.anl.gov>
Date: Tue, 16 Apr 2013 16:45:45 -0700
Thanks -- that works great.

On Apr 16, 2013, at 4:10 PM, Andrew Johnson <anj@aps.anl.gov> wrote:

> Hi Eric,
> 
> On 2013-04-16 Eric Norum wrote:
>> date -u -r 1366124582
>> Tue Apr 16 15:03:02 UTC 2013
> 
> This seems to work and is shorter and probably faster:
> 
> #include <stdio.h>
> #include "epicsTime.h"
> 
> int main() {
>    epicsTimeStamp timestamp;
>    struct tm tm;
>    unsigned long nsec;
> 
>    timestamp.secPastEpoch = 1366124582 - POSIX_TIME_AT_EPICS_EPOCH;
>    timestamp.nsec = 0;
>    epicsTimeToGMTM(&tm, &nsec, &timestamp);
>    printf("%04d-%02d-%02d_%02d:%02d:%02d\n", tm.tm_year + 1900,
>        tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
>    return 0;
> }
> 
> 2103-03-16_15:03:02
> 
> - Andrew
> -- 
> It is difficult to get a man to understand something, when his salary
> depends upon his not understanding it. -- Upton Sinclair


References:
EPICS UTC Time conversion Eric Norum
RE: EPICS UTC Time conversion Allison, Stephanie
Re: EPICS UTC Time conversion Eric Norum
Re: EPICS UTC Time conversion Andrew Johnson

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