RFC: add `blas/ext/base/dnancusumpw`

[kgryte]

Checklist

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• Read and understood the Code of Conduct.
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Description

Description of the feature request.

This RFC proposes adding support for computing the cumulative sum of a double-precision floating-point strided array ignoring NaN values and using pairwise summation. This would be a lower-level strided interface which includes a native C implementation and has the following package name:

Package: @stdlib/blas/ext/base/dnancusumpw

Related Issues

Does this feature request have any related issues?

None.

Questions

Any questions for reviewers?

No.

Other

Any other information relevant to this feature request? This may include screenshots, references, sample output, and/or implementation notes.

No.