UInt128/Int128

A 128-bit unsigned/signed integer implementation with optimized multiplication, division, and string conversions. The user interface has been changed to be in sync with Apple's unreleased version of the UInt128/Int128.

This package is usually around ten times faster than other UInt128 implementations and roughly the same speed as Apple's implementation. If you find something faster, please let me know.

This package now supports StaticBigInt. Unfortunately, this means you need to have one of following configurations (or higher)

1. macOS 13.3+,
2. iOS 16.4+,
3. macCatalyst 16.4+,
4. tvOS 16.4+,
5. watchOS 9.4+

If you don't have these configurations, you need to use a previous release of UInt128/Int128.

Installation

This library includes Swift Package support out of the box. Reference this git repository via XCode to install as a Package.

• Warning: This interface uses different initializers than earlier versions.

You can also manually copy over the Sources/(U)Int128.swift files into your project and it should work great. This file split duplicates Apple's UInt128 and Int128 files. Note: Some common utilities are located in the Common.swift file which you'll also need if copying to your project.

Documentation

Please refer to https://mgriebling.github.io/UInt128/documentation/uint128 for the documentation.