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https://github.com/stdlib-js/number-uint32-base-rotl
Bitwise rotation to the left.
https://github.com/stdlib-js/number-uint32-base-rotl
base circshift circular javascript node node-js nodejs rol rotate rotl rotl32 rotr shift stdlib type types util utilities utility utils
Last synced: 3 months ago
JSON representation
Bitwise rotation to the left.
- Host: GitHub
- URL: https://github.com/stdlib-js/number-uint32-base-rotl
- Owner: stdlib-js
- License: apache-2.0
- Created: 2021-06-07T13:27:34.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2024-10-01T01:23:31.000Z (4 months ago)
- Last Synced: 2024-10-11T02:38:14.999Z (3 months ago)
- Topics: base, circshift, circular, javascript, node, node-js, nodejs, rol, rotate, rotl, rotl32, rotr, shift, stdlib, type, types, util, utilities, utility, utils
- Language: JavaScript
- Homepage: https://github.com/stdlib-js/stdlib
- Size: 358 KB
- Stars: 3
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
- Citation: CITATION.cff
- Security: SECURITY.md
Awesome Lists containing this project
README
About stdlib...
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.
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.
When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.
To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!
# Bitwise Rotation
[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]
> Bitwise rotation to the left.
## Installation
```bash
npm install @stdlib/number-uint32-base-rotl
```
Alternatively,
- To load the package in a website via a `script` tag without installation and bundlers, use the [ES Module][es-module] available on the [`esm`][esm-url] branch (see [README][esm-readme]).
- If you are using Deno, visit the [`deno`][deno-url] branch (see [README][deno-readme] for usage intructions).
- For use in Observable, or in browser/node environments, use the [Universal Module Definition (UMD)][umd] build available on the [`umd`][umd-url] branch (see [README][umd-readme]).
The [branches.md][branches-url] file summarizes the available branches and displays a diagram illustrating their relationships.
To view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.
## Usage
```javascript
var rotl32 = require( '@stdlib/number-uint32-base-rotl' );
```
#### rotl32( x, shift )
Performs a bitwise rotation to the left.
```javascript
var toBinaryStringUint32 = require( '@stdlib/number-uint32-base-to-binary-string' );
var x = 2147483649;
var bstr = toBinaryStringUint32( x );
// returns '10000000000000000000000000000001'
var y = rotl32( x, 10 );
// returns 1536
bstr = toBinaryStringUint32( y );
// returns '00000000000000000000011000000000'
```
## Notes
- If provided a `shift` equal to `0`, the function returns the input value.
```javascript
var y = rotl32( 3, 0 );
// returns 3
```
- If provided a `shift` greater than `31`, the function performs a bitwise rotation based on the `5` least significant bits of `shift` (i.e., `shift % 32`).
```javascript
var shift = 34; // 00000000000000000000000000100010
var y = rotl( 1, shift ); // 00000000000000000000000000000100
// returns 4
```
## Examples
```javascript
var toBinaryStringUint32 = require( '@stdlib/number-uint32-base-to-binary-string' );
var MAX_INT = require( '@stdlib/constants-uint32-max' );
var rotl32 = require( '@stdlib/number-uint32-base-rotl' );
var HALF;
var x;
var y;
var i;
for ( i = 0; i < 100; i++ ) {
x = i;
y = rotl32( x, 10 );
console.log( '%d => %s => %s => %d', x, toBinaryStringUint32( x ), toBinaryStringUint32( y ), y );
}
HALF = (MAX_INT+1) / 2;
for ( i = 0; i < 100; i++ ) {
x = HALF + i;
y = rotl32( x, 10 );
console.log( '%d => %s => %s => %d', x, toBinaryStringUint32( x ), toBinaryStringUint32( y ), y );
}
```
* * *
## See Also
- [`@stdlib/number-uint32/base/rotr`][@stdlib/number/uint32/base/rotr]: bitwise rotation to the right.
* * *
## 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 © 2016-2024. The Stdlib [Authors][stdlib-authors].
[npm-image]: http://img.shields.io/npm/v/@stdlib/number-uint32-base-rotl.svg
[npm-url]: https://npmjs.org/package/@stdlib/number-uint32-base-rotl
[test-image]: https://github.com/stdlib-js/number-uint32-base-rotl/actions/workflows/test.yml/badge.svg?branch=main
[test-url]: https://github.com/stdlib-js/number-uint32-base-rotl/actions/workflows/test.yml?query=branch:main
[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/number-uint32-base-rotl/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/number-uint32-base-rotl?branch=main
[chat-image]: https://img.shields.io/gitter/room/stdlib-js/stdlib.svg
[chat-url]: https://app.gitter.im/#/room/#stdlib-js_stdlib:gitter.im
[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/number-uint32-base-rotl/tree/deno
[deno-readme]: https://github.com/stdlib-js/number-uint32-base-rotl/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/number-uint32-base-rotl/tree/umd
[umd-readme]: https://github.com/stdlib-js/number-uint32-base-rotl/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/number-uint32-base-rotl/tree/esm
[esm-readme]: https://github.com/stdlib-js/number-uint32-base-rotl/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/number-uint32-base-rotl/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/number-uint32-base-rotl/main/LICENSE
[@stdlib/number/uint32/base/rotr]: https://github.com/stdlib-js/number-uint32-base-rotr