chore: propagate typo and doc-note fixes across blas sibling packages

[Planeshifter]

Description

Propagating fixes merged to develop between 2026-05-18 and 2026-05-19 to sibling packages.

Error-message grammar typo (fix:)

c606f03c3 ("fix: correct bugs and typos in blas/base/cgemv") removed an ungrammatical article from a stride-validation error message. The same defect — must be a nonzero in place of must be nonzero — is present in the strideX == 0 guard of two sibling ndarray C implementations:

• @stdlib/blas/base/dsyr
• @stdlib/blas/base/ssyr

Transposed words in ndarray interface description (fix:)

c606f03c3 also corrected a word-order error in the cgemv README. The *_ndarray interface description in two sibling READMEs reads using indexing alternative semantics rather than using alternative indexing semantics:

• @stdlib/blas/base/dgemv
• @stdlib/blas/base/sgemv

Return-value doc-note phrasing (docs:)

238446093 ("docs: propagate recent doc-note and grammar fixes to sibling packages") fixed the ## Notes block of the *index-of-column packages, which claimed the function returns -1 when "unable to find a search vector". The search vector is the caller-provided query, not the value being located; the function returns -1 when unable to find a matching column. The analogous *index-of-row and *last-index-of-row packages carry the identical defect, corrected here to "unable to find a matching row" across lib/ implementations and TypeScript declaration files:

• @stdlib/blas/ext/base/cindex-of-row, dindex-of-row, gindex-of-row, sindex-of-row, zindex-of-row
• @stdlib/blas/ext/base/clast-index-of-row, dlast-index-of-row, glast-index-of-row, slast-index-of-row, zlast-index-of-row

Related Issues

None.

Questions

No.

Other

Validation: each pattern was located by searching the originating commit's defect signature across sibling packages under the same namespace. Candidate sites were verified by two independent reviews — each reading every target file in full to confirm the defect is present and the surrounding context does not change the semantics — followed by a style-consistency pass confirming each edit is a pure phrase substitution introducing no formatting drift.

Deliberately excluded:

• Test files (test/*.js) and the blas/ext/base namespace declaration barrel, mirroring the file scope of source commit 238446093 (lib/ and per-package docs/types/ only).
• The cgemv logic fixes from c606f03c3 (LDA < v → LDA < vala; the beta == 0 zero-fill argument; the duplicate @param strideA1): the dgemv/sgemv/ggemv siblings were inspected and are already correct — those defects were unique to the newly added cgemv.
• The bench: string-interpolation refactors and the test: coverage additions merged in the same window: stylistic and additive changes, not defect corrections.

Checklist

• Read, understood, and followed the contributing guidelines.

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

This PR was produced by an automated fix-propagation routine run with Claude Code. The routine identified generalizable fixes among commits merged to develop in the preceding 24 hours, located sibling packages exhibiting the same defect, and applied the equivalent change at each validated site. Every site was confirmed by independent automated review passes before inclusion.

---

@stdlib-js/reviewers

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Generated by Claude Code

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
blas/base/dgemv	$\color{red}748/749$ $\color{green}+99.87%$	$\color{red}116/117$ $\color{green}+99.15%$	$\color{green}6/6$ $\color{green}+100.00%$	$\color{red}748/749$ $\color{green}+99.87%$
blas/base/dsyr	$\color{green}616/616$ $\color{green}+100.00%$	$\color{green}82/82$ $\color{green}+100.00%$	$\color{green}5/5$ $\color{green}+100.00%$	$\color{green}616/616$ $\color{green}+100.00%$
blas/base/sgemv	$\color{red}750/751$ $\color{green}+99.87%$	$\color{red}116/117$ $\color{green}+99.15%$	$\color{green}6/6$ $\color{green}+100.00%$	$\color{red}750/751$ $\color{green}+99.87%$
blas/base/ssyr	$\color{green}616/616$ $\color{green}+100.00%$	$\color{green}82/82$ $\color{green}+100.00%$	$\color{green}5/5$ $\color{green}+100.00%$	$\color{green}616/616$ $\color{green}+100.00%$
blas/ext/base/cindex-of-row	$\color{green}548/548$ $\color{green}+100.00%$	$\color{green}54/54$ $\color{green}+100.00%$	$\color{green}4/4$ $\color{green}+100.00%$	$\color{green}548/548$ $\color{green}+100.00%$
blas/ext/base/clast-index-of-row	$\color{green}601/601$ $\color{green}+100.00%$	$\color{green}52/52$ $\color{green}+100.00%$	$\color{green}4/4$ $\color{green}+100.00%$	$\color{green}601/601$ $\color{green}+100.00%$
blas/ext/base/dindex-of-row	$\color{green}531/531$ $\color{green}+100.00%$	$\color{green}52/52$ $\color{green}+100.00%$	$\color{green}4/4$ $\color{green}+100.00%$	$\color{green}531/531$ $\color{green}+100.00%$
blas/ext/base/dlast-index-of-row	$\color{green}575/575$ $\color{green}+100.00%$	$\color{green}50/50$ $\color{green}+100.00%$	$\color{green}4/4$ $\color{green}+100.00%$	$\color{green}575/575$ $\color{green}+100.00%$
blas/ext/base/gindex-of-row	$\color{red}471/555$ $\color{green}+84.86%$	$\color{red}39/40$ $\color{green}+97.50%$	$\color{red}3/4$ $\color{green}+75.00%$	$\color{red}471/555$ $\color{green}+84.86%$
blas/ext/base/glast-index-of-row	$\color{green}555/555$ $\color{green}+100.00%$	$\color{green}56/56$ $\color{green}+100.00%$	$\color{green}3/3$ $\color{green}+100.00%$	$\color{green}555/555$ $\color{green}+100.00%$
blas/ext/base/sindex-of-row	$\color{green}531/531$ $\color{green}+100.00%$	$\color{green}52/52$ $\color{green}+100.00%$	$\color{green}4/4$ $\color{green}+100.00%$	$\color{green}531/531$ $\color{green}+100.00%$
blas/ext/base/slast-index-of-row	$\color{green}575/575$ $\color{green}+100.00%$	$\color{green}50/50$ $\color{green}+100.00%$	$\color{green}4/4$ $\color{green}+100.00%$	$\color{green}575/575$ $\color{green}+100.00%$
blas/ext/base/zindex-of-row	$\color{green}548/548$ $\color{green}+100.00%$	$\color{green}54/54$ $\color{green}+100.00%$	$\color{green}4/4$ $\color{green}+100.00%$	$\color{green}548/548$ $\color{green}+100.00%$
blas/ext/base/zlast-index-of-row	$\color{green}601/601$ $\color{green}+100.00%$	$\color{green}52/52$ $\color{green}+100.00%$	$\color{green}4/4$ $\color{green}+100.00%$	$\color{green}601/601$ $\color{green}+100.00%$

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