nodef/extra-bit: A collection of common bitwise operations

A collection of common bitwise operations.<br> 📦 Node.js, 🌐 Web, 📜 Files, 📰 Docs. 📘 Wiki.

The bit is a basic unit of information in information theory, computing. This package includes bit twiddling hacks by Sean Eron Anderson and many others. JavaScript converts a Number (a 64-bit floating point number) to a 32-bit integer when bitwise operators (such as |) are applied. All bitwise operations are performed on 32-bit integers.

This package is available in Node.js and Web formats. The web format is exposed as extra_bit standalone variable and can be loaded from jsDelivr CDN.

Stability: Experimental.

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const bit = require('extra-bit');
// import * as bit from "extra-bit";
// import * as bit from "https://unpkg.com/extra-bit/index.mjs"; (deno)

bit.count(7);
// → 3 (111 ⇒ 3)

bit.parity(8, 2);
// → 2 (10,00 ⇒ 10)

bit.swap(6, 1, 0);
// → 5 (110 ⇒ 101)

bit.reverse(0xFFFF0000);
// → 65535 (0x0000FFFF)

bit.signExtend(15, 4);
// → -1

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