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feat: add stats/base/ztest/two-sample/results/struct-factory
PR-URL: #7447 Co-authored-by: Athan Reines <[email protected]> Reviewed-by: Athan Reines <[email protected]>
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‎lib/node_modules/@stdlib/stats/base/ztest/two-sample/results/struct-factory/README.md

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<!--
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@license Apache-2.0
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Copyright (c) 2025 The Stdlib Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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# structFactory
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> Create a new [`struct`][@stdlib/dstructs/struct] constructor tailored to a specified floating-point data type.
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<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->
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<section class="intro">
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</section>
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<!-- /.intro -->
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<!-- Package usage documentation. -->
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<section class="usage">
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## Usage
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```javascript
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var structFactory = require( '@stdlib/stats/base/ztest/two-sample/results/struct-factory' );
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```
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#### structFactory( dtype )
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Returns a new [`struct`][@stdlib/dstructs/struct] constructor tailored to a specified floating-point data type.
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```javascript
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var Struct = structFactory( 'float64' );
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// returns <Function>
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var s = new Struct();
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// returns <Struct>
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```
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The function supports the following parameters:
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- **dtype**: floating-point data type for storing floating-point results. Must be either `'float64'` or `'float32'`.
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</section>
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<!-- /.usage -->
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<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="notes">
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## Notes
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- A [`struct`][@stdlib/dstructs/struct] provides a fixed-width composite data structure for storing two-sample Z-test results and provides an ABI-stable data layout for JavaScript-C interoperation.
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</section>
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<!-- /.notes -->
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<!-- Package usage examples. -->
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<section class="examples">
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## Examples
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<!-- eslint no-undef: "error" -->
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```javascript
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var resolveEnum = require( '@stdlib/stats/base/ztest/alternative-resolve-enum' );
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var Float64Array = require( '@stdlib/array/float64' );
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var Float32Array = require( '@stdlib/array/float32' );
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var structFactory = require( '@stdlib/stats/base/ztest/two-sample/results/struct-factory' );
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var Struct = structFactory( 'float64' );
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var results = new Struct({
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'rejected': true,
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'alpha': 0.05,
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'pValue': 0.0132,
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'statistic': 2.4773,
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'nullValue': 0.0,
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'xmean': 3.7561,
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'ymean': 3.0129,
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'ci': new Float64Array( [ 0.1552, 1.3311 ] ),
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'alternative': resolveEnum( 'two-sided' )
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});
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var str = results.toString({
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'format': 'linear'
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});
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console.log( str );
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Struct = structFactory( 'float32' );
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results = new Struct({
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'rejected': true,
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'alpha': 0.05,
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'pValue': 0.0132,
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'statistic': 2.4773,
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'nullValue': 0.0,
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'xmean': 3.7561,
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'ymean': 3.0129,
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'ci': new Float32Array( [ 0.1552, 1.3311 ] ),
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'alternative': resolveEnum( 'two-sided' )
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});
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str = results.toString({
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'format': 'linear'
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});
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console.log( str );
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```
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</section>
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<!-- /.examples -->
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<!-- Section to include cited references. If references are included, add a horizontal rule *before* the section. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="references">
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</section>
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<!-- /.references -->
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<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
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<section class="related">
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</section>
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<!-- /.related -->
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<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="links">
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[@stdlib/dstructs/struct]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/dstructs/struct
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</section>
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<!-- /.links -->

‎lib/node_modules/@stdlib/stats/base/ztest/two-sample/results/struct-factory/benchmark/benchmark.js

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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2025 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var bench = require( '@stdlib/bench' );
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var isFunction = require( '@stdlib/assert/is-function' );
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var pkg = require( './../package.json' ).name;
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var factory = require( './../lib' );
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// MAIN //
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bench( pkg, function benchmark( b ) {
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var values;
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var v;
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var i;
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values = [
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'float64',
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'float32'
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];
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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v = factory( values[ i%values.length ] );
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if ( typeof v !== 'function' ) {
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b.fail( 'should return a function' );
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}
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}
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b.toc();
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if ( !isFunction( v ) ) {
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b.fail( 'should return a function' );
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}
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b.pass( 'benchmark finished' );
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b.end();
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});

‎lib/node_modules/@stdlib/stats/base/ztest/two-sample/results/struct-factory/docs/repl.txt

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{{alias}}( dtype )
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Returns a new struct constructor tailored to a specified floating-point data
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type.
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Parameters
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----------
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dtype: string
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Floating-point data type for storing floating-point results.
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Returns
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-------
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fcn: Function
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Struct constructor.
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Examples
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--------
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> var S = {{alias}}( 'float64' );
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> var r = new S();
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> r.toString( { 'format': 'linear' } )
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<string>
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See Also
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--------
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