200 lines
7.5 KiB
Markdown
200 lines
7.5 KiB
Markdown
<!--
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@license Apache-2.0
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Copyright (c) 2018 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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# Constants
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[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] [![dependencies][dependencies-image]][dependencies-url]
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> Standard library constants.
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<section class="installation">
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## Installation
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```bash
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npm install @stdlib/constants
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```
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</section>
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<section class="usage">
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## Usage
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```javascript
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var constants = require( '@stdlib/constants' );
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```
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#### constants
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Standard library constants.
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```javascript
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var ns = constants;
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// returns {...}
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```
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The constants that are part of this package live in the following sub-namespaces:
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<!-- <toc pattern="*"> -->
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<div class="namespace-toc">
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- <span class="signature">[`array`][@stdlib/constants/array]</span><span class="delimiter">: </span><span class="description">array constants.</span>
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- <span class="signature">[`complex128`][@stdlib/constants/complex128]</span><span class="delimiter">: </span><span class="description">128-bit complex number mathematical constant.</span>
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- <span class="signature">[`complex64`][@stdlib/constants/complex64]</span><span class="delimiter">: </span><span class="description">half-precision floating-point mathematical constants.</span>
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- <span class="signature">[`float16`][@stdlib/constants/float16]</span><span class="delimiter">: </span><span class="description">half-precision floating-point mathematical constants.</span>
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- <span class="signature">[`float32`][@stdlib/constants/float32]</span><span class="delimiter">: </span><span class="description">single-precision floating-point mathematical constants.</span>
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- <span class="signature">[`float64`][@stdlib/constants/float64]</span><span class="delimiter">: </span><span class="description">double-precision floating-point mathematical constants.</span>
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- <span class="signature">[`int16`][@stdlib/constants/int16]</span><span class="delimiter">: </span><span class="description">16-bit signed integer mathematical constants.</span>
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- <span class="signature">[`int32`][@stdlib/constants/int32]</span><span class="delimiter">: </span><span class="description">32-bit signed integer mathematical constants.</span>
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- <span class="signature">[`int8`][@stdlib/constants/int8]</span><span class="delimiter">: </span><span class="description">8-bit signed integer mathematical constants.</span>
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- <span class="signature">[`path`][@stdlib/constants/path]</span><span class="delimiter">: </span><span class="description">standard library string path constants.</span>
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- <span class="signature">[`time`][@stdlib/constants/time]</span><span class="delimiter">: </span><span class="description">time constants.</span>
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- <span class="signature">[`uint16`][@stdlib/constants/uint16]</span><span class="delimiter">: </span><span class="description">16-bit unsigned integer mathematical constants.</span>
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- <span class="signature">[`uint32`][@stdlib/constants/uint32]</span><span class="delimiter">: </span><span class="description">32-bit unsigned integer mathematical constants.</span>
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- <span class="signature">[`uint8`][@stdlib/constants/uint8]</span><span class="delimiter">: </span><span class="description">8-bit unsigned integer mathematical constants.</span>
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- <span class="signature">[`unicode`][@stdlib/constants/unicode]</span><span class="delimiter">: </span><span class="description">standard library string unicode constants.</span>
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</div>
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<!-- </toc> -->
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</section>
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<!-- /.usage -->
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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 objectKeys = require( '@stdlib/utils/keys' );
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var constants = require( '@stdlib/constants' );
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var out = constants.float64.PI;
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// returns ~3.142
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out = constants.array.MAX_ARRAY_LENGTH;
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// returns 4294967295
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out = constants.time.HOURS_IN_DAY;
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// returns 24
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```
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</section>
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<!-- /.examples -->
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<section class="main-repo" >
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* * *
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## Notice
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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.
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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].
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#### Community
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[![Chat][chat-image]][chat-url]
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---
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## License
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See [LICENSE][stdlib-license].
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## Copyright
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Copyright © 2016-2021. The Stdlib [Authors][stdlib-authors].
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</section>
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<!-- /.stdlib -->
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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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[npm-image]: http://img.shields.io/npm/v/@stdlib/constants.svg
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[npm-url]: https://npmjs.org/package/@stdlib/constants
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[test-image]: https://github.com/stdlib-js/constants/actions/workflows/test.yml/badge.svg
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[test-url]: https://github.com/stdlib-js/constants/actions/workflows/test.yml
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[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/constants/main.svg
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[coverage-url]: https://codecov.io/github/stdlib-js/constants?branch=main
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[dependencies-image]: https://img.shields.io/david/stdlib-js/constants.svg
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[dependencies-url]: https://david-dm.org/stdlib-js/constants/main
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[chat-image]: https://img.shields.io/gitter/room/stdlib-js/stdlib.svg
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[chat-url]: https://gitter.im/stdlib-js/stdlib/
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[stdlib]: https://github.com/stdlib-js/stdlib
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[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors
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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/constants/main/LICENSE
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<!-- <toc-links> -->
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[@stdlib/constants/array]: https://www.npmjs.com/package/@stdlib/constants/tree/main/array
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[@stdlib/constants/complex128]: https://www.npmjs.com/package/@stdlib/constants/tree/main/complex128
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[@stdlib/constants/complex64]: https://www.npmjs.com/package/@stdlib/constants/tree/main/complex64
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[@stdlib/constants/float16]: https://www.npmjs.com/package/@stdlib/constants/tree/main/float16
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[@stdlib/constants/float32]: https://www.npmjs.com/package/@stdlib/constants/tree/main/float32
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[@stdlib/constants/float64]: https://www.npmjs.com/package/@stdlib/constants/tree/main/float64
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[@stdlib/constants/int16]: https://www.npmjs.com/package/@stdlib/constants/tree/main/int16
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[@stdlib/constants/int32]: https://www.npmjs.com/package/@stdlib/constants/tree/main/int32
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[@stdlib/constants/int8]: https://www.npmjs.com/package/@stdlib/constants/tree/main/int8
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[@stdlib/constants/path]: https://www.npmjs.com/package/@stdlib/constants/tree/main/path
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[@stdlib/constants/time]: https://www.npmjs.com/package/@stdlib/constants/tree/main/time
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[@stdlib/constants/uint16]: https://www.npmjs.com/package/@stdlib/constants/tree/main/uint16
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[@stdlib/constants/uint32]: https://www.npmjs.com/package/@stdlib/constants/tree/main/uint32
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[@stdlib/constants/uint8]: https://www.npmjs.com/package/@stdlib/constants/tree/main/uint8
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[@stdlib/constants/unicode]: https://www.npmjs.com/package/@stdlib/constants/tree/main/unicode
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<!-- </toc-links> -->
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</section>
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<!-- /.links -->
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