[SciPy-Dev] Calling LowLevelCallable from Cython

[Pauli Virtanen]

Hi,

At the moment probably nothing better than

https://github.com/scipy/scipy/blob/master/scipy/_lib/_ccallback_c.pyx#L137

if I understand what you  mean.

ke, 2018-05-30 kello 17:31 -0700, Stefan van der Walt kirjoitti:
> Hi all,
> 
> I am looking into how to call a user-provided LowLevelCallable from
> Cython.  In SciPy, I could only find examples of how to do that from
> C
> (e.g. `scipy.integrate.quad`).  Wherever it is used, some processing
> is
> done to see whether the LowLevelCallable provides a Python function,
> a C
> function, what the signature is, etc. before calling.
> 
> Would it be convenient to have a set of Cython utilities that makes
> this
> process easier?  Or is there perhaps a trick in Cython that makes it
> trivial?
> 
> I'm going to work on this more tomorrow, but wanted to check first
> whether anyone here has attempted something similar?
> 
> Thanks!
> Stéfan
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