EPICS Home

Experimental Physics and Industrial Control System


 
1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
<== Date ==> <== Thread ==>

Subject: Re: EPICS UTC Time conversion
From: Andrew Johnson <[email protected]>
To: [email protected]
Cc: Eric Norum <[email protected]>
Date: Tue, 16 Apr 2013 18:10:49 -0500
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

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

Navigate by Date:
Prev: RE: EPICS UTC Time conversion Kim, Kukhee
Next: Re: EPICS UTC Time conversion Till Straumann
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
Navigate by Thread:
Prev: RE: EPICS UTC Time conversion Kim, Kukhee
Next: Re: EPICS UTC Time conversion Eric Norum
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024