iraf.net

Hello Pui;
Mike forwarded your message. This problem was discover by your
colleague Kevin T.C. Jim and there is a share library available for
SUNOS 5.6 and 5.7 with the fix. This bug fix will be available for the
general users in our next patch release, but in the meantime you can
dowload the share libraries from:iraf.noao.edu/pub/S11_zfiofxf.5.[6,7].e # 2 files Please grab this file and put it in some directory with the name
(for 5.7): 'S11_5.7.e'. Then create a link 'ln -s S11_5.7.e S11.e'; finally
define a shell variable:

setenv IRAFULIB <dir_path>/ # Notice the '/'

where 'dir_path' is the directory where the above S11* files are.

Now you are ready to start the IRAF cl and test the images problem.
(same procedure for 5.6)Please let me know if you have problems or need the fix for other
platform. I am curious about the 8bits images. Where are coming from?Regards
Nelson Zarate> -------------- ----------------------------------------------------------------
> >From phr@nemesis.ifa.hawaii.edu Wed Jan 19 17:06:20 2000
> From: Pui Hin Rhoads <phr@IfA.Hawaii.Edu>
> To: fitz@noao.edu
> Subject: bugs in 2113?
>
> Mike,
>
> One of the users has reported the following:
>
> >I discovered a bug in the current release of IRAF running on the IfA
> >computers. It involves all operations on 8 bit data but I am told does not
> >affect 16 or 32 bit data. Essentially, the data is scrambled because a
> >reference to data word size was inappropriately set. This applied to all FITS
> >kernel operations, such as imarith, imstat, etc. I am not sure how long the bug
> >has been there - but certainly since the latest upgrades you did in December.
> >The IRAF team has provided a fix which I have tested and found works.
> >
> >The description from the IRAF folks:
> >
> >---
> > The bug was in the FITS Kernel interface. When reading Byte data we need
> >to pass the number of bytes read to the upper level (imio and fio); but imio
> >does not know about byte size so fxfzst() needs to calculate the number of
> >bytes read for a short datatype (2bytes) and send this value to imio. This
> >calculation was not done correctly hence the bug.
> >---
>
> I just looked through the IRAF WEB site and didn't see any mention of this,
> will you be able to provide me with some information?
>
> Thanks,
> Pui Hin
>
>