Arm C Language Extensions

This repository contains the source material from which the specifications for the Arm C Language Extensions (ACLE) are derived.

The latest release of the specifications can be browsed online at arm-software.github.io/acle/.

The PDF version of the documents can be retrieved from the latest release page.

The development version is stored on the branch main at github.com/ARM-software/acle/, while the latest released version is tracked by the branch latest-release.

Contributing

Contributions of any kind are always welcome! Please check the contribution guidelines for details.

Defect reports

Please report defects in or enhancements to the specifications in this folder to the issue tracker page on GitHub.

For reporting defects or enhancements to documents that currenlty are not yet included in this repo and are thus only hosted on developer.arm.com, please send an email to arm.acle@arm.com.

Transitioning the ACLE specifications

This is a work in progress. Any document added to the repository will be referenced in this README file when added.

For the documents that are still missing in this project please see the Arm developer ACLE page

List of documents

HTML version	PDF version
Arm C Language Extensions	download
Morello Supplement to the Arm C Language Extensions	download
Arm MVE Intrinsics	download
Arm Neon Intrinsics Reference	download
Arm®v8-M Security Extensions - Requirements on Development Tools	download

License

All the ACLE documents themselves are not dependent on any assets outside of their own directory and all have their own license file included in the directory. Currently all the ACLE documents are licenced under the Creative Commons Attribution-ShareAlike 4.0 International License + grant of Patent License. Contributions to these files are accepted under the same license.

The files in the sub-directories of the tools directory are provided under the Apache 2.0 license. Contributions to these files are accepted under the same license.

Past contributors

The list below represents the list of people that have been contributing since July 2021, when the ACLE specifications were released with an open source license.

However, the ACLE is a collective project that was started few years ago, and that since then has seen the contribution of many people before it was released as an open source project.

Contributors ✨

Thanks goes to these wonderful people (emoji key):

Tamar Christina 💻	Matt 💻	ValeriaDaneva 💻 🚇 👀	Francesco Petrogalli 💻 👀	ktkachov-arm 💻 🖋 🚇 👀	sallyarmneale 👀	Simon Tatham 👀
Sam Ellis 👀 💻	Kristof Beyls 👀	sbaranga-arm 💻	Andre Vieira 💻	tejas-belagod-arm 💻	Jamie Cunliffe 🐛	George Steed 💻 👀
Peter Waller 👀	Matthew Devereau 💻	rsandifo-arm 👀 💻	rearnsha 👀	David Benjamin 🐛 👀	Dani 💻 🚇	Ties Stuij 👀

This project follows the all-contributors specification. Contributions of any kind welcome!