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Change dtype=None behavior in sum/prod/cumulative_sum/linalg.trace #744

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merged 2 commits into from
Feb 13, 2024

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Closes gh-731. This is a backwards-incompatible change. It seems justified and necessary because array libraries all behave like the required behavior described in this commit, are not planning to change, and the initial rationale for the "upcast float" requirement wasn't strong. See discussion in gh-731 for more details.

It also improves readability; there were too many bullet points and the indentation wasn't working. The explanation of behavior for dtype=None is almost halved in size, making it much easier to understand.

Closes data-apisgh-731. This is a backwards-incompatible change. It seems
justified and necessary because array libraries all behave like the
required behavior described in this commit, are not planning to change,
and the initial rationale for the "upcast float" requirement wasn't
strong. See discussion in data-apisgh-731 for more details.
@rgommers rgommers added Maintenance Bug fix, typo fix, or general maintenance. API change Changes to existing functions or objects in the API. labels Feb 10, 2024
@rgommers rgommers added this to the v2023 milestone Feb 10, 2024
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@kgryte kgryte left a comment

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LGTM. Thanks, @rgommers!

@kgryte kgryte merged commit 7274050 into data-apis:main Feb 13, 2024
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@rgommers rgommers deleted the remove-sum-upcasting branch February 13, 2024 09:43
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Reconsider sum/prod/trace upcasting for floating-point dtypes
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