feat:C implementation of stats/base/dists/weibull/skewness

---
type: pre_push_report
description: Results of running various checks prior to pushing changes.
report:
  - task: run_javascript_examples
    status: na
  - task: run_c_examples
    status: na
  - task: run_cpp_examples
    status: na
  - task: run_javascript_readme_examples
    status: na
  - task: run_c_benchmarks
    status: na
  - task: run_cpp_benchmarks
    status: na
  - task: run_fortran_benchmarks
    status: na
  - task: run_javascript_benchmarks
    status: na
  - task: run_julia_benchmarks
    status: na
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  - task: run_javascript_tests
    status: na
---

Author: yuvi-mittal

lib/node_modules/@stdlib/stats/base/dists/weibull/skewness/benchmark/benchmark.native.js

@@ -1,7 +1,7 @@
 /**
 * @license Apache-2.0
 *
-* Copyright (c) 2024 The Stdlib Authors.
+* Copyright (c) 2025 The Stdlib Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -24,11 +24,11 @@ var resolve = require( 'path' ).resolve;
 var bench = require( '@stdlib/bench' );
 var Float64Array = require( '@stdlib/array/float64' );
 var randu = require( '@stdlib/random/base/randu' );
-var EPS = require( '@stdlib/constants/float64/eps' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 var pkg = require( './../package.json' ).name;
 
+
 // VARIABLES //
 
 var skewness = tryRequire( resolve( __dirname, './../lib/native.js' ) );
@@ -39,30 +39,25 @@ var opts = {
 
 // MAIN //
 
-bench( pkg+'::native', opts, function benchmark( b ) {
-	var lambda;
+bench( pkg, opts, function benchmark( b ) {
+
 	var len;
 	var k;
-	var skew;
-	var x;
+	var lambda;
 	var y;
 	var i;
 
 	len = 100;
-	x = new Float64Array( len );
-	lambda = new Float64Array( len );
 	k = new Float64Array( len );
-	skew = new Float64Array( len );
+	lambda = new Float64Array( len );
 	for ( i = 0; i < len; i++ ) {
-		x[ i ] = ( randu()*100.0 ) + EPS;
-		lambda[ i ] = ( randu()*100.0 ) + EPS;
-		k[ i ] = ( randu()*100.0 ) + EPS;
-		skew[ i ] = ( randu() * 2.0 ) - 1.0; // skewness between -1 and 1
+		k[ i ] = ( randu() * 10.0 ) + 1.0; // shape parameter > 0
+		lambda[ i ] = ( randu() * 10.0 ) + 1.0; // scale parameter > 0
 	}
 
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
-		y = skewness( x[ i % len ], k[ i % len ], skew[ i % len ] );
+		y = skewness( k[ i % len ], lambda[ i % len ] );
 		if ( isnan( y ) ) {
 			b.fail( 'should not return NaN' );
 		}

lib/node_modules/@stdlib/stats/base/dists/weibull/skewness/lib/native.js

@@ -18,7 +18,6 @@
 
 'use strict';
 
-const skewness = require('@stdlib/stats/base/dists/weibull/skewness/lib/main');
 // MODULES //
 
 var addon = require( './../src/addon.node' );
@@ -29,9 +28,9 @@ var addon = require( './../src/addon.node' );
 /**
 * Evaluates the probability density function (PDF) of the Weibull skewness distribution.
 *
-* @param {number} x - input value
-* @param {PositiveInteger} n - number of observations (or shape parameter for Weibull)
-* @returns {Probability} evaluated PDF
+* @param {number} k - shape parameter
+* @param {PositiveInteger} lambda - scale parameter
+* @returns {number} evaluated skewness
 *
 * @example
 * var y = skewness( 2.0, 1.5 );
@@ -61,8 +60,8 @@ var addon = require( './../src/addon.node' );
 * var y = skewness( 2.0, 0 );
 * // returns NaN (invalid parameter n)
 */
-function skewness( x, n ) {
-	return addon( x, n );
+function skewness( k, lambda ) {
+		return addon( k, lambda );
 }