style: format if conditions in stats/base/dists/rayleigh

[Planeshifter]

Description

This pull request aligns two C source files in @stdlib/stats/base/dists/rayleigh with the formatting and floating-point-literal conventions used across the rest of the namespace.

Namespace summary

• Members analyzed: 15 (cdf, ctor, entropy, kurtosis, logcdf, logpdf, mean, median, mgf, mode, pdf, quantile, skewness, stdev, variance).
• C-binding members: 14 (all except ctor, which is a JS-only constructor).
• Features with a clear majority (≥75%): C-source if predicate format (12/14, 85.7%), floating-point-literal use in sigma < 0.0 comparisons (13/14, 92.8%), lib/main.js validation predicate (sigma < 0.0, 7/8 sigma-only packages), @param {NonNegativeNumber} sigma JSDoc type (7/8), package.json top-level shape, README.md section order, lib/native.js / manifest.json / binding.gyp presence, examples/c/example.c shape, docs/types/index.d.ts shape.
• Features without a clear majority (excluded): README ## Notes section presence (2/6 in factory packages), 0.0/0.0 vs 0.0 / 0.0 whitespace in NaN literals (8 vs 6, no majority).

Outlier packages

stats/base/dists/rayleigh/median

Reformats the if predicate in src/main.c to the multi-line form used across 12 of 14 sibling distributions and replaces the integer literal 0 with 0.0 to match the floating-point convention established in #12204. Both deviations were introduced when median was added in 2025 and went undetected. Brings the file into conformance with the rest of the package.

stats/base/dists/rayleigh/variance

Reformats the if predicate in src/main.c to the multi-line form used by 12 of 14 sibling distributions in the namespace. The single-line guard was the only divergence from the established pattern; no behavioral change.

Related Issues

None.

Questions

None.

Other

Validation

• Structural features (file tree, package.json shape, README sections, manifest shape) were extracted across all 15 members and compared against a 75% majority threshold.
• Semantic features (validation predicates, error construction, JSDoc shape, public signatures) were extracted from lib/main.js, lib/index.js, and any lib/factory.js in each package.
• Each candidate correction was reviewed by three independent agents (semantic-review, cross-reference, structural-review). All three returned confirmed-drift for the items in this PR.
• Deliberately excluded:
  • entropy/lib/main.js uses sigma <= 0.0 and @param {PositiveNumber} rather than the sibling pattern sigma < 0.0 / @param {NonNegativeNumber}. The C source and JS tests are internally consistent; aligning would change observable behavior at sigma === 0, which is out of scope for a drift-correction PR.
  • mgf/lib/factory.js lacks the sigma === 0.0 → degenerate short-circuit present in the other five factory packages. Applying it would change mgf(t, 0) from SQRT_HALF_PI to 1.0. Worth a separate bug-fix PR, but out of scope here.
  • mgf lacks test/fixtures/julia/; the closed-form MGF formula does not need empirical comparison fixtures, so absence is intentional.
  • ctor lacks C-binding artifacts entirely (intentional — it is a JS-only constructor).

Disclosure

This pull request was produced by an automated cross-package drift-detection routine running under Claude Code. The agent extracted structural and semantic features across all members of the namespace, computed per-feature majorities, validated each candidate correction with three independent reviewer agents, and applied only those corrections that did not change observable behavior. All changes were reviewed before commit.

Checklist

• Read, understood, and followed the contributing guidelines.

AI Assistance

• Yes

• No

• 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 authored end-to-end by an automated drift-detection routine running under Claude Code: feature extraction, three-agent validation, code changes, commit composition, and PR body. A maintainer should review before merging.

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Generated by Claude Code

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
stats/base/dists/rayleigh/median	$\\color{green}166/166$ $\\color{green}+100.00\\%$	$\\color{green}8/8$ $\\color{green}+100.00\\%$	$\\color{green}2/2$ $\\color{green}+100.00\\%$	$\\color{green}166/166$ $\\color{green}+100.00\\%$
stats/base/dists/rayleigh/variance	$\\color{green}162/162$ $\\color{green}+100.00\\%$	$\\color{green}8/8$ $\\color{green}+100.00\\%$	$\\color{green}2/2$ $\\color{green}+100.00\\%$	$\\color{green}162/162$ $\\color{green}+100.00\\%$

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