[headlessNode]

Resolves stdlib-js/metr-issue-tracker#1005.

Description

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This pull request:

• add blas/ext/base/last-index-equal

Related Issues

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This pull request has the following related issues:

• Resolves [RFC]: add blas/ext/last-index-equal metr-issue-tracker#1005.

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Primarily written by Claude Code.

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@stdlib-js/reviewers

[kgryte]

FTR: the alternative to requiring that y is broadcast compat with x is for x and y to broadcast to a common shape. However, I think this is the correct decision given the behavior of the function; e.g., if x and y broadcast to a common shape, then x could be 0d, but then the returned indices would be the indices in the virtualized array which is a bit non-intuitive. If a user wants that sort of behavior, they can explicitly broadcast inputs to a common shape before calling this function.

[kgryte]

cc @batpigandme Tagging you here given my recent statements during office hours. Namely, broadcasting is not necessarily required between input ndarrays; although, this is the general rule for things like arithmetic operations.

[kgryte]

LGTM

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
blas/ext/last-index-equal	$\\color{green}618/618$ $\\color{green}+100.00\\%$	$\\color{green}72/72$ $\\color{green}+100.00\\%$	$\\color{green}2/2$ $\\color{green}+100.00\\%$	$\\color{green}618/618$ $\\color{green}+100.00\\%$

The above coverage report was generated for the changes in this PR.