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Date: Thu, 11 Dec 2008 12:52:00 -0000
From: Patrick Alken <patrick.alken@colorado.edu>
To: Brian Gough <bjg@network-theory.co.uk>
Cc: gsl-discuss@sourceware.org, Rhys Ulerich <rhys.ulerich@gmail.com>
Subject: Re: [Help-gsl] Submitted patch to add bspline derivative
	capabilities
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Ah I hadn't considered this issue. If there are other areas of
GSL which have the same issues maybe we should keep a list so
when there is a major new release like 2.0 we could integrate
these "extra" workspaces? Of course one problem with that is
if we have a separate workspace for bspline derivatives it may
never be convenient to integrate it with the normal bspline
workspace.

On Fri, Dec 05, 2008 at 06:56:15PM +0000, Brian Gough wrote:
> I noticed a problem when preparing the new release.  The extra entries
> in the bspline derivatives workspace break binary compatibility.
> 
> This isn't necessarily a huge problem, but it seems undesirable to
> force an upgrade of all applications just for those two struct
> entries.  If we're going to break binary compatibility we may as well
> do it for all other functions that need it at the same time.
> 
> So I'd propose using a separate workspace for the derivative functions
> in this release.
> 
> See e.g.  branch bspline-compat at http://src.network-theory.com/gsl.git/
> which is basically finished, I just need to add some error checking.