npm package: @stdlib/constants
Description: Constants.
Author: The Stdlib Authors
Latest version: 0.3.3

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<details>
  <summary>
    About stdlib...
  </summary>
  <p>We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.</p>
  <p>The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.</p>
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</details>

# Constants

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

> Constants.

<section class="installation">

## Installation

```bash
npm install @stdlib/constants
```

</section>

<section class="usage">

## Usage

```javascript
var constants = require( '@stdlib/constants' );
```

#### constants

Namespace containing constants.

```javascript
var ns = constants;
// returns {...}
```

Constants are split across the the following sub-namespaces:

<!-- <toc pattern="*"> -->

<div class="namespace-toc">

-   <span class="signature">[`array`][@stdlib/constants/array]</span><span class="delimiter">: </span><span class="description">array constants.</span>
-   <span class="signature">[`complex128`][@stdlib/constants/complex128]</span><span class="delimiter">: </span><span class="description">128-bit complex number mathematical constant.</span>
-   <span class="signature">[`complex64`][@stdlib/constants/complex64]</span><span class="delimiter">: </span><span class="description">half-precision floating-point mathematical constants.</span>
-   <span class="signature">[`float16`][@stdlib/constants/float16]</span><span class="delimiter">: </span><span class="description">half-precision floating-point mathematical constants.</span>
-   <span class="signature">[`float32`][@stdlib/constants/float32]</span><span class="delimiter">: </span><span class="description">single-precision floating-point mathematical constants.</span>
-   <span class="signature">[`float64`][@stdlib/constants/float64]</span><span class="delimiter">: </span><span class="description">double-precision floating-point mathematical constants.</span>
-   <span class="signature">[`int16`][@stdlib/constants/int16]</span><span class="delimiter">: </span><span class="description">16-bit signed integer mathematical constants.</span>
-   <span class="signature">[`int32`][@stdlib/constants/int32]</span><span class="delimiter">: </span><span class="description">32-bit signed integer mathematical constants.</span>
-   <span class="signature">[`int8`][@stdlib/constants/int8]</span><span class="delimiter">: </span><span class="description">8-bit signed integer mathematical constants.</span>
-   <span class="signature">[`path`][@stdlib/constants/path]</span><span class="delimiter">: </span><span class="description">path constants.</span>
-   <span class="signature">[`time`][@stdlib/constants/time]</span><span class="delimiter">: </span><span class="description">time constants.</span>
-   <span class="signature">[`uint16`][@stdlib/constants/uint16]</span><span class="delimiter">: </span><span class="description">16-bit unsigned integer mathematical constants.</span>
-   <span class="signature">[`uint32`][@stdlib/constants/uint32]</span><span class="delimiter">: </span><span class="description">32-bit unsigned integer mathematical constants.</span>
-   <span class="signature">[`uint8`][@stdlib/constants/uint8]</span><span class="delimiter">: </span><span class="description">8-bit unsigned integer mathematical constants.</span>
-   <span class="signature">[`unicode`][@stdlib/constants/unicode]</span><span class="delimiter">: </span><span class="description">unicode constants.</span>

</div>

<!-- </toc> -->

</section>

<!-- /.usage -->

<section class="examples">

## Examples

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

```javascript
var objectKeys = require( '@stdlib/utils/keys' );
var constants = require( '@stdlib/constants' );

var out = constants.float64.PI;
// returns ~3.142

out = constants.array.MAX_ARRAY_LENGTH;
// returns 4294967295

out = constants.time.HOURS_IN_DAY;
// returns 24
```

</section>

<!-- /.examples -->

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

<section class="related">

</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; 2016-2024. The Stdlib [Authors][stdlib-authors].

</section>

<!-- /.stdlib -->

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<section class="links">

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

[test-image]: https://github.com/stdlib-js/constants/actions/workflows/test.yml/badge.svg?branch=v0.3.3
[test-url]: https://github.com/stdlib-js/constants/actions/workflows/test.yml?query=branch:v0.3.3

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

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

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/constants/main/LICENSE

<!-- <toc-links> -->

[@stdlib/constants/array]: https://github.com/stdlib-js/constants/tree/main/array

[@stdlib/constants/complex128]: https://github.com/stdlib-js/constants/tree/main/complex128

[@stdlib/constants/complex64]: https://github.com/stdlib-js/constants/tree/main/complex64

[@stdlib/constants/float16]: https://github.com/stdlib-js/constants/tree/main/float16

[@stdlib/constants/float32]: https://github.com/stdlib-js/constants/tree/main/float32

[@stdlib/constants/float64]: https://github.com/stdlib-js/constants/tree/main/float64

[@stdlib/constants/int16]: https://github.com/stdlib-js/constants/tree/main/int16

[@stdlib/constants/int32]: https://github.com/stdlib-js/constants/tree/main/int32

[@stdlib/constants/int8]: https://github.com/stdlib-js/constants/tree/main/int8

[@stdlib/constants/path]: https://github.com/stdlib-js/constants/tree/main/path

[@stdlib/constants/time]: https://github.com/stdlib-js/constants/tree/main/time

[@stdlib/constants/uint16]: https://github.com/stdlib-js/constants/tree/main/uint16

[@stdlib/constants/uint32]: https://github.com/stdlib-js/constants/tree/main/uint32

[@stdlib/constants/uint8]: https://github.com/stdlib-js/constants/tree/main/uint8

[@stdlib/constants/unicode]: https://github.com/stdlib-js/constants/tree/main/unicode

<!-- </toc-links> -->

</section>

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