Few things in the Python API care about order, but there are also quite a few places that will return C-order (and are faster for C-order inputs) whether you change those defaults or not.
The main issue is that e.g. some cython wrappers will probably assume that the newly created array is C-order. And those will just not work. For example, I would imagine many libraries that have C/Cython wrappers have code that doesn't specify `order="C"` explicitly (why would they?) but then passes it into a typed memory-views (if cython) like `double[:, ::1]` enforcing a C-contiguous memory layout for speed. Such code should normally fail gracefully, but fail it will. Also, as Aaron said, a lot of these places might not enforce it but still be speed impacted. So yes, it would be expected break a lot of C-interfacing code that has Python wrappers around it to normalize input. - Sebastian On Fri, 2023-11-10 at 22:37 +0000, Valerio De Benedetto wrote: > Hi, I found that the documented default row-major order is enforced > throughout the library with a series of `order='C'` default > parameters, so given this I supposed there's no way to change the > default (or am I wrong?) > If, supposedly, I'd change that by patching the library (substituting > 'C's for 'F's), do you think there would by any problem with other > downstream libraries using numpy in my project? Do you think they > assume a default-constructed array is always row-major and access the > underlying data? > _______________________________________________ > 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: sebast...@sipsolutions.net > _______________________________________________ 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
