Joshua
Thanks for your input. How could I include the Cython loggamma function within my setup script, so that fftlog.f would pick it up?
Adjusting fftlog.f to pick up dfft*.f from scipy/fftpack/src/dfftpack worked without problems. So if I could do the same for loggamma, then the only new file would be fftlog.f, for which we have the permission.
Thanks,
Dieter
On 07/10/16 21:18, Joshua Wilson wrote:
Re log gamma: under the hood the SciPy versions are in C (real version)
and Cython (complex version), so linking them up with Fortran code is
definitely doable.
On Fri, Oct 7, 2016 at 8:16 PM, Ralf Gommers <ralf.gommers@gmail.com
<mailto:ralf.gommers@gmail.com>> wrote: <dieter@werthmuller.org <mailto:dieter@werthmuller.org
On Sat, Oct 8, 2016 at 1:58 PM, Dieter Werthmüller>> wrote: <mailto:andrew.hamilton@colora
Evening,
I wrote to Andrew Hamilton, and below is his answer. He has
basically no problem with it at all, I just don't know if his
response is explicit enough.
I think my email was quite extensive, and I assume that is as
much as we will get from him. I also do not expect him to change
his on "13 Mar 1999, 21:17" from TeX translated website...
What do you think, is this enough?
Yes, that's perfectly fine. Thanks for clarifying that Dieter.
Cheers,
Ralf
I also wrote to Takuya Ooura, and will let you know of his
response, if I get one. However, as there are other complex
logarithmic double precision gamma functions around, one already
in scipy, this piece is not mission critical.
Regards,
Dieter
========== START email correspondence with Andrew Hamilton
==========
Subject: Re: FFTLog - license
From: Andrew Hamilton <andrew.hamilton@colorado.edudo.edu >>
Date: 07/10/16 18:22
To: Dieter Werthmüller <dieter.werthmuller@gmx.ch
<mailto:dieter.werthmuller@gmx.ch >>
CC: Andrew.Hamilton@colorado.edu
<mailto:Andrew.Hamilton@colorado.edu ><mailto:ralf.gommers@gmail.com
Dieter,
I approve your adding the license language you suggest to
FFTLog, and making available the resulting package for distribution.
Andrew
On 10/07/2016 03:42 PM, Dieter Werthmüller wrote:
> Dear Andrew,
>
> Please apologize me bothering you again.
>
> After I published the code to wrap your FFTLog for Python I
thought that
> it would be much better if your FFTLog would make it straight
into the
> scientific library of Python. This would make your FFTLog
available to a
> much wider audience.
>
> I contacted the developers of SciPy (http://scipy.org), and
they are
> interested in including your code. However, there is one issue:
> licensing. Code that is published on the web without a license
file is
> copyrighted under law, and SciPy can for this reason not
include your
> code into their library.
>
> All I ask for is if you could confirm to us by email that we
are allowed
> to distribute your FFTLog under the BSD-3-Clause license:
> https://opensource.org/licenses/BSD-3-Clause
<https://opensource.org/licenses/BSD-3-Clause >
>
> The license is just a suggestion, any other BSD or MIT compatible
> license would be fine as well. (For the same, legal reasons we
recommend
> to publish a license file on your website too, but that is
obviously
> entirely up to you. It might, however, clarify things for
future visitors.)
>
> It would only affect your fftlog.f file, and the changes you
made to
> cdgamma.f. I will write Takuya OOURA as well regarding the
original
> cdgamma.f-file, asking him the same favour. And the three
drfft*.f are
> already in the SciPy-library with the whole FFTPack.
>
> If you are interested why this issue arises, Jake Vanderplas,
one of the
> developers of SciPy, wrote an interesting article about the topic:
>
http://www.astrobetter.com/blog/2014/03/10/the-whys-and-hows -of-licensing-scientific-code/
<http://www.astrobetter.com/blog/2014/03/10/the-whys-and-how >s-of-licensing-scientific-code /
>
> Thank you again for your time and for making FFTLog available!
> Best regards,
> Dieter
>
========== END email correspondence with Andrew Hamilton ==========
On 07/10/16 15:13, Ralf Gommers wrote:
On Sat, Oct 8, 2016 at 9:11 AM, Ralf Gommers
<ralf.gommers@gmail.com <mailto:ralf.gommers@gmail.com>
<mailto:ralf.gommers@gmail.com>>> wrote: <mailto:dieter@werthmuller.org
On Sat, Oct 8, 2016 at 8:59 AM, Dieter Werthmüller
<dieter@werthmuller.org <mailto:dieter@werthmuller.org>
<mailto:dieter@werthmuller.org>>> wrote: SciPy-Dev@scipy.org <mailto:SciPy-Dev@scipy.org>
Jake,
Thanks for the clarification. I will try to get the
permissions
from the
authors.
What is regarded as sufficient? Is an email from the
author,
granting
me/SciPy to distribute their code with a specific,
BSD-style license
sufficient? Or do they necessarily have to change
the websites where
they host the code to include the license?
An email stating that the code can be distributed under
a BSD
license (or MIT or other compatible license) is enough.
Some delay on the line, missed Jake's answer. Email is
enough, but a
change in the repo would of course be even better.
Ralf
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