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[task #15631] Using IAU's SOFA libraries in Gnuastro

From: Mohammad Akhlaghi
Subject: [task #15631] Using IAU's SOFA libraries in Gnuastro
Date: Sat, 9 May 2020 18:33:05 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:76.0) Gecko/20100101 Firefox/76.0


                 Summary: Using IAU's SOFA libraries in Gnuastro
                 Project: GNU Astronomy Utilities
            Submitted by: makhlaghi
            Submitted on: Sat 09 May 2020 11:33:04 PM BST
         Should Start On: Sat 09 May 2020 12:00:00 AM BST
   Should be Finished on: Sat 09 May 2020 12:00:00 AM BST
                Category: Libraries
                Priority: 5 - Normal
              Item Group: Enhancement
                  Status: None
                 Privacy: Public
        Percent Complete: 0%
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                  Effort: 0.00



SOFA <> stands for "Standards Of Fundamental Astronomy"
and is maintained by Division A (Fundamental Astronomy) of the International
Astronomical Union (IAU). It provides many very low-level library functions in
C and Fortran that directly implement the IAU standards, mostly related to
coordinates, times and such standard-related measurements. 

For example see the complete list
<> of C functions in their
20190722 version.

Through these functions, Gnuastro can become more generally useful in more
basic astronomical operations. We just have to consult with GNU regarding
their Terms and conditions <>. We then have
to import their functions into Gnuastro's source during bootstrapping and
build them within the library (its apparently not a library to build itself
and link with and is more like Gnulib).


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