docs: document empty-matrix return value

[Planeshifter]

Description

What is the purpose of this pull request?

This pull request:

• adds a ## Notes block to the public iladlr JSDoc documenting the -1 return value for empty and all-zero matrices.

lapack/base/iladlr

The public wrapper's JSDoc was the sole member of the iladl* family lacking the empty-matrix note. Its sibling iladlc documents this behavior inline, and iladlr's own private implementation (lib/base.js) carries the identical block. The added note is factually accurate: base.js returns -1 for M <= 0 || N <= 0 and falls through to -1 when no non-zero element is encountered. Conformance across the iladl* family after this change: 100%.

Related Issues

Does this pull request have any related issues?

No.

Questions

Any questions for reviewers of this pull request?

No.

Other

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

Sibling reference: lib/node_modules/@stdlib/lapack/base/iladlc/lib/iladlc.js. Private impl already documenting the same behavior: lib/node_modules/@stdlib/lapack/base/iladlr/lib/base.js. No test, example, or observable behavior changes — JSDoc only.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

AI Assistance

When authoring the changes proposed in this PR, did you use any kind of AI assistance?

• Yes
• No

If you answered "yes" above, how did you use AI assistance?

• Code generation (e.g., when writing an implementation or fixing a bug)
• Test/benchmark generation
• Documentation (including examples)
• Research and understanding

Disclosure

If you answered "yes" to using AI assistance, please provide a short disclosure indicating how you used AI assistance. This helps reviewers determine how much scrutiny to apply when reviewing your contribution. Example disclosures: "This PR was written primarily by Claude Code." or "I consulted ChatGPT to understand the codebase, but the proposed changes were fully authored manually by myself.".

Drift analysis across the lapack/base namespace was performed by Claude Code as part of an automated cross-package audit. The single surviving correction (this JSDoc block) was manually verified against the sibling package and the private implementation before commit.

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Generated by Claude Code

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
lapack/base/iladlr	$\\color{red}375/377$ $\\color{green}+99.47\\%$	$\\color{red}36/37$ $\\color{green}+97.30\\%$	$\\color{green}3/3$ $\\color{green}+100.00\\%$	$\\color{red}375/377$ $\\color{green}+99.47\\%$

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