Realtime Math

This library is geared towards realtime applications that require their math to be as fast as possible. Much care was taken to maximize inlining opportunities and for code generation to be optimal when a function isn't inlined by passing values in registers whenever possible. It contains 3D and 4D arithmetic commonly used in video games and realtime applications.

It offers an alternative to GLM and DirectX Math. See here for a comparison with similar libraries.

Philosophy

Much thought was put into designing the library for it to be as flexible and powerful as possible. To this end, the following decisions were made:

The library consists of 100% C++11 header files and is thus easy to integrate in any project
The interface follows C-style conventions to ensure optimal code generation
Both float32 and float64 arithmetic are supported
Row vectors are used
See here for more details

Supported platforms

Windows VS2015 x86 and x64
Windows (VS2017 to VS2022) x86, x64, and ARM64
Windows (VS2017 to VS2022) with clang x86 and x64
Linux (gcc 5 to 13) x86 and x64
Linux (clang 4 to 15) x86 and x64
OS X (Xcode 12.5, 13.2, 14.2) x64 and ARM64
Android (NDK 21) ARMv7-A and ARM64
iOS (Xcode 10.3, 11.7, 12.5, 13.2, 14.2) ARM64
Emscripten (1.39.11) WASM
MSYS2 x64

The above supported platform list is only what is tested every release but if it compiles, it should work just fine.

Getting started

This library is 100% headers as such you just need to include them in your own project to start using it. However, if you wish to run the unit tests or to contribute to RTM head on over to the getting started section in order to setup your environment and make sure to check out the contributing guidelines.

You can install rtm with Conan.

External dependencies

You don't need anything else to get started: everything is self contained. See here for details.

License, copyright, and code of conduct

This project uses the MIT license.

This project was started from the math code found in the Animation Compression Library v1.1.0 and it retains the copyright of the original contributors.