JSPM

Package Exports

long

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (long) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

A Long class for representing a 64-bit two's-complement integer value derived from the Closure Library for stand-alone use and extended with unsigned support.

Looking for arbitrary byte size integers? Try IntN.js!

Why?

As of the ECMAScript specification, number types have a maximum value of 2^53. Beyond that, behaviour might be unexpected. Furthermore, bitwise operations can only be performed on 32bit numbers. However, in some use cases it is required to be able to perform reliable mathematical and/or bitwise operations on the full 64bits. This is where Long.js comes into play.

Features

CommonJS compatible
RequireJS/AMD compatible
Shim compatible (include the script, then use var Long = dcodeIO.Long;)
node.js compatible, also available via npm
Fully documented using jsdoc3
API-compatible to the Closure Library implementation
Zero production dependencies
Small footprint

Usage

node.js / CommonJS

Install: npm install long

var Long = require("long");
var longVal = new Long(0xFFFFFFFF, 0x7FFFFFFF);
console.log(longVal.toString());
...

RequireJS / AMD

require.config({
    "paths": {
        "Math/Long": "/path/to/Long.js"
    }
});
require(["Math/Long"], function(Long) {
    var longVal = new Long(0xFFFFFFFF, 0x7FFFFFFF);
    console.log(longVal.toString());
});

Browser / shim

<script src="Long.min.js"></script>

var Long = dcodeIO.Long;
var longVal = new Long(0xFFFFFFFF, 0x7FFFFFFF);
alert(longVal.toString());

long