[Numpy-discussion] help with PyArrayInterface
I would like to make a C++ data structure that internally has a contiguous buffer look like a Numpy array via the numpy ArrayInterface. I already have this structure wrapped and usable in Python and things seem fairly straight forward except I am not sure about the typekind field of the PyArrayInterface structure. In the documentation (here https://numpy.org/doc/stable/reference/c-api/types-and-structures.html#c.PyArrayInterface) I see that typekind is a char and that there are values for some but not all of the various C++ POD numeric types.. What typekind value should I use for single precision floating point, 8 bit ineteger, 16 bit integer, etc etc? Those types are all supported by Numpy, but I don't know what the typekind value should be. Can you point to a list of vlaues? ___ NumPy-Discussion mailing list -- numpy-discussion@python.org To unsubscribe send an email to numpy-discussion-le...@python.org https://mail.python.org/mailman3/lists/numpy-discussion.python.org/ Member address: arch...@mail-archive.com
[Numpy-discussion] Re: help with PyArrayInterface
On 21/12/21 11:27 pm, blor...@lbl.gov wrote:
... but I don't know what the typekind value should be. Can you point to a list
of vlaues?
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>>> pprint.pprint([(k,v) for k,v in np.sctypeDict.items() if
isinstance(k, str) and len(k) == 1])
[('?', ),
('b', ),
('B', ),
('h', ),
('H', ),
('i', ),
('I', ),
('p', ),
('P', ),
('l', ),
('L', ),
('q', ),
('Q', ),
('e', ),
('f', ),
('d', ),
('g', ),
('F', ),
('D', ),
('G', ),
('O', ),
('S', ),
('U', ),
('V', ),
('M', ),
('m', ),
('a', )]
Matti
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[Numpy-discussion] NumPy Community Meeting Wednesday
Hi all, It is almost holiday for many, so happy holidays everyone! For those still around and busy tomorrow: There will be a NumPy Community meeting Wednesday December 22nd at 19:00 UTC. Everyone is invited and encouraged to join in and edit the work-in-progress meeting topics and notes at: https://hackmd.io/76o-IxCjQX2mOXO_wwkcpg?both Best wishes Sebastian signature.asc Description: This is a digitally signed message part ___ NumPy-Discussion mailing list -- numpy-discussion@python.org To unsubscribe send an email to numpy-discussion-le...@python.org https://mail.python.org/mailman3/lists/numpy-discussion.python.org/ Member address: arch...@mail-archive.com
