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Matthew Flatt 128892c996 add fx{+,-,*,lshift}/wraparound 
Expose machine-level operations that stay within the fixnum range,
which can be useful for things like hash-code computations where it's
ok to just lose bits. Operations like `unsafe-fx+` turn out to do that
already in the current implementation, but with no guarantee (and with
no checking of arguments).

For Racket BC, before this commit, JIT-inlined `fxlshift` incorrectly
handled a negative second argument like `arithmetic-shift` instead of
erroring.
2020-11-18 17:39:18 -07:00
.github Remove deprecated set-env directive from CI files 2020-11-17 06:51:30 +01:00
pkgs add fx{+,-,*,lshift}/wraparound 2020-11-18 17:39:18 -07:00
racket add fx{+,-,*,lshift}/wraparound 2020-11-18 17:39:18 -07:00
.gitattributes Don't include git files in archives. 2010-05-12 01:46:05 -04:00
.gitignore Fix typo. 2019-06-21 12:32:37 -05:00
.lgtm.yml Fetch PB to start LGTM build 2020-08-07 12:17:17 +02:00
.mailmap Minor metadata changes. 2019-10-15 08:09:32 -04:00
.makefile add fx{+,-,*,lshift}/wraparound 2020-11-18 17:39:18 -07:00
build.md render build guide to "build.md" 2020-11-16 08:28:18 -07:00
LICENSE Recent GMP is under LGPL v3. 2020-05-01 22:26:25 -04:00
Makefile add fx{+,-,*,lshift}/wraparound 2020-11-18 17:39:18 -07:00
README.md Fix README 2020-09-06 09:03:42 -04:00

README.md

Racket is a general-purpose programming language and an ecosystem for language-oriented programming.

This repository holds the source code for the core of Racket plus some related packages. The rest of the Racket distribution source code is in other repositories, mostly under the Racket GitHub organization.

Quick Start

Pre-built versions of Racket for a variety of operating systems and architectures, as well as convenient source distributions are available at

https://download.racket-lang.org

Racket comes with extensive documentation, including several tutorials. You can read all of this documentation, as well as documentation for third-party packages at

https://docs.racket-lang.org

Building from Source

For information on building Racket from this repository, see the Build Guide.

Contributing

Contribute to Racket by submitting a pull request, joining the development mailing list, or visiting the IRC or Slack channels.

By making a contribution, you are agreeing that your contribution is licensed under the LGPLv3, Apache 2.0, and MIT licenses. Those licenses are available in this repository in the files racket/src/LICENSE-LGPL.txt, racket/src/LICENSE-APACHE.txt, and racket/src/LICENSE-MIT.txt.

See the Racket Build Guide for more guidance on contributing.

The Friendly Environment Policy contains guidelines on expected behavior within the Racket community.

License

Racket is free software; see LICENSE for more details.