Subject: |
Re: menuFtype for 64 bit integers aka. long long and unsigned long long |
From: |
Benjamin Franksen <[email protected]> |
To: |
<[email protected]> |
Date: |
Thu, 22 Mar 2012 01:29:08 +0100 |
Am Mittwoch, 21. März 2012, 00:14:47 schrieb Andrew Johnson:
> On 2012-03-15 Hinko Kocevar wrote:
> > Are there any plans on adding support for 64-bit types to menuFtype (for
> > 3.14.x branch)?
>
> This will definitely never happen on the 3.14.x branch, and probably not on
> the 3.15.x branch either (there should be a 3.15.0 release out this
> summer).
>
> > Are there any workarounds for this issue?
>
> This idea is really horrible but it should work as long as you're very
> careful: If you are responsible for the device support and all the CA
> client programs and you can do any IOC-based processing that is necessary
> inside a subroutine or aSub record then you could pretend to the IOC code
> that your 64- bit data types are epicsFloat64 (i.e. double) values and use
> casts to convert them back and forth. However you won't be able to use
> any of the standard tools to look at the values, and I really don't
> recommend doing this.
Somewhat less horrible is a DBF_NOACCESS field with an epicsInt64 C
declaration as 'extra' property... you still have no 'official' outside access
to the field, but at least the field type documents that.
Cheers
Ben
________________________________
Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
Mitglied der Hermann von Helmholtz-Gemeinschaft Deutscher Forschungszentren e.V.
Aufsichtsrat: Vorsitzender Prof. Dr. Dr. h.c. mult. Joachim Treusch, stv. Vorsitzende Dr. Beatrix Vierkorn-Rudolph
Geschäftsführerin: Prof. Dr. Anke Rita Kaysser-Pyzalla
Sitz Berlin, AG Charlottenburg, 89 HRB 5583
Postadresse:
Hahn-Meitner-Platz 1
D-14109 Berlin
http://www.helmholtz-berlin.de
- References:
- menuFtype for 64 bit integers aka. long long and unsigned long long Hinko Kocevar
- Re: menuFtype for 64 bit integers aka. long long and unsigned long long Andrew Johnson
- Navigate by Date:
- Prev:
Re: Build problem with db dependencies Bruce Hill
- Next:
hdf5 (h5py) anyone? Emmanuel Mayssat
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
<2012>
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
- Navigate by Thread:
- Prev:
Re: menuFtype for 64 bit integers aka. long long and unsigned long long Andrew Johnson
- Next:
RE: menuFtype for 64 bit integers aka. long long and unsigned long long Mark Rivers
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
<2012>
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
|