https://github.com/blixt/js-bigint
Allows working with integers of any size.
https://github.com/blixt/js-bigint
Last synced: 6 months ago
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Allows working with integers of any size.
- Host: GitHub
- URL: https://github.com/blixt/js-bigint
- Owner: blixt
- Created: 2014-04-06T18:48:31.000Z (about 12 years ago)
- Default Branch: master
- Last Pushed: 2014-04-14T17:20:31.000Z (about 12 years ago)
- Last Synced: 2025-02-24T06:55:39.216Z (over 1 year ago)
- Language: JavaScript
- Size: 395 KB
- Stars: 19
- Watchers: 4
- Forks: 5
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
BigInt [![Build Status Image][]][Build Status]
======
Enables working with integers beyond 53 bits (the upper limit of what
JavaScript's `Number` type can accurately represent).
This is a pure JavaScript library, unlike other libraries that do the
same thing. The main benefit of being pure JavaScript is that you can
use it in a browser environment:
For Node.js-only projects, consider looking into these C extensions:
- [bignum](https://github.com/justmoon/node-bignum)
- [bigint](https://github.com/substack/node-bigint)
Example
-------
```js
> var bigint = require('bigintjs');
> bigint('99999999999999999999999999999').add('1').toString();
'100000000000000000000000000000'
> bigint('123456789012345678901234567890').multiply('98765432109876543210987654321').toString();
'12193263113702179522618503273362292333223746380111126352690'
> // Bitwise operations on a big number (JavaScript only supports up to 32 bits)
> bigint('0xFFFFFFFFFFFFFFFF').and('0xF0F0F0F0F0F0F0F0').shiftLeft(8).toString();
'4444580219171430789120'
```
This project is in an early state
---------------------------------
Some basic operations are still missing. Most notably:
- Division (and modulus), but you can use bit shifting for powers of 2
- Comparison (greater than / less than)
- Square root
Feel free to submit a pull request for any of the above.
Using this package
------------------
You can install this package with [NPM][]:
```bash
npm install --save bigintjs
```
To be able to run this in a browser, you need to use a framework that
supports CommonJS modules (for example: [Browserify][]).
[Browserify]: http://browserify.org/
[Build Status]: https://travis-ci.org/blixt/js-bigint
[Build Status Image]: https://api.travis-ci.org/blixt/js-bigint.png?branch=master
[NPM]: https://www.npmjs.org/