npm package: @stdlib/assert-is-symmetric-matrix
Description: Test if a value is a symmetric matrix.
Author: The Stdlib Authors
Latest version: 0.2.3

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<details>
  <summary>
    About stdlib...
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# isSymmetricMatrix

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Test if a value is a [symmetric matrix][symmetric-matrix].

<section class="installation">

## Installation

```bash
npm install @stdlib/assert-is-symmetric-matrix
```

</section>

<section class="usage">

## Usage

```javascript
var isSymmetricMatrix = require( '@stdlib/assert-is-symmetric-matrix' );
```

#### isSymmetricMatrix( value )

Tests if a value is a [symmetric matrix][symmetric-matrix].

```javascript
var ndarray = require( '@stdlib/ndarray-ctor' );

var arr = ndarray( 'generic', [ 0, 1, 1, 2 ], [ 2, 2 ], [ 2, 1 ], 0, 'row-major' );
var bool = isSymmetricMatrix( arr );
// returns true
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var ndarray = require( '@stdlib/ndarray-ctor' );
var isSymmetricMatrix = require( '@stdlib/assert-is-symmetric-matrix' );

var arr = ndarray( 'generic', [ 0, 1, 1, 2 ], [ 2, 2 ], [ 2, 1 ], 0, 'row-major' );
var out = isSymmetricMatrix( arr );
// returns true

out = isSymmetricMatrix( [ 1, 2, 3, 4 ] );
// returns false

out = isSymmetricMatrix( {} );
// returns false

out = isSymmetricMatrix( null );
// returns false
```

</section>

<!-- /.examples -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/assert-is-matrix-like`][@stdlib/assert/is-matrix-like]</span><span class="delimiter">: </span><span class="description">test if a value is a 2-dimensional ndarray-like object.</span>
-   <span class="package-name">[`@stdlib/assert-is-nonsymmetric-matrix`][@stdlib/assert/is-nonsymmetric-matrix]</span><span class="delimiter">: </span><span class="description">test if a value is a non-symmetric matrix.</span>
-   <span class="package-name">[`@stdlib/assert-is-square-matrix`][@stdlib/assert/is-square-matrix]</span><span class="delimiter">: </span><span class="description">test if a value is a 2-dimensional ndarray-like object having equal dimensions.</span>

</section>

<!-- /.related -->

<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->


<section class="main-repo" >

* * *

## Notice

This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].

#### Community

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

</section>

<!-- /.stdlib -->

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<section class="links">

[npm-image]: http://img.shields.io/npm/v/@stdlib/assert-is-symmetric-matrix.svg
[npm-url]: https://npmjs.org/package/@stdlib/assert-is-symmetric-matrix

[test-image]: https://github.com/stdlib-js/assert-is-symmetric-matrix/actions/workflows/test.yml/badge.svg?branch=v0.2.3
[test-url]: https://github.com/stdlib-js/assert-is-symmetric-matrix/actions/workflows/test.yml?query=branch:v0.2.3

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/assert-is-symmetric-matrix/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/assert-is-symmetric-matrix?branch=main

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[stdlib]: https://github.com/stdlib-js/stdlib

[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors

[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

[deno-url]: https://github.com/stdlib-js/assert-is-symmetric-matrix/tree/deno
[deno-readme]: https://github.com/stdlib-js/assert-is-symmetric-matrix/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/assert-is-symmetric-matrix/tree/umd
[umd-readme]: https://github.com/stdlib-js/assert-is-symmetric-matrix/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/assert-is-symmetric-matrix/tree/esm
[esm-readme]: https://github.com/stdlib-js/assert-is-symmetric-matrix/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/assert-is-symmetric-matrix/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/assert-is-symmetric-matrix/main/LICENSE

[symmetric-matrix]: https://en.wikipedia.org/wiki/Symmetric_matrix

<!-- <related-links> -->

[@stdlib/assert/is-matrix-like]: https://www.npmjs.com/package/@stdlib/assert-is-matrix-like

[@stdlib/assert/is-nonsymmetric-matrix]: https://www.npmjs.com/package/@stdlib/assert-is-nonsymmetric-matrix

[@stdlib/assert/is-square-matrix]: https://www.npmjs.com/package/@stdlib/assert-is-square-matrix

<!-- </related-links> -->

</section>

<!-- /.links -->