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bors f411b94ce1 auto merge of #11448 : c-a/rust/u64_from_be_bytes, r=alexcrichton Instead of reading a byte at a time in a loop we hardcode how to read each size. We also try to do as few reads as possible by reading as big primitive types as possible. For example if size is eight we do a single read of a u64 value and if size is seven we read it as [u32\|u16\|u8]. Timings on a Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz -- Before -- running 7 tests test io::extensions::test::test_u64_from_be_bytes ... ok test io::extensions::bench::u64_from_be_bytes_4_aligned ... bench: 386 ns/iter (+/- 5) test io::extensions::bench::u64_from_be_bytes_4_unaligned ... bench: 387 ns/iter (+/- 2) test io::extensions::bench::u64_from_be_bytes_7_aligned ... bench: 628 ns/iter (+/- 1) test io::extensions::bench::u64_from_be_bytes_7_unaligned ... bench: 637 ns/iter (+/- 3) test io::extensions::bench::u64_from_be_bytes_8_aligned ... bench: 727 ns/iter (+/- 18) test io::extensions::bench::u64_from_be_bytes_8_unaligned ... bench: 723 ns/iter (+/- 22) callgrind rustc -S rust/src/test/bench/sudoku.rs u64_from_be_bytes self: 4.37% -- After -- running 7 tests test io::extensions::test::test_u64_from_be_bytes ... ok test io::extensions::bench::u64_from_be_bytes_4_aligned ... bench: 162 ns/iter (+/- 7) test io::extensions::bench::u64_from_be_bytes_4_unaligned ... bench: 164 ns/iter (+/- 7) test io::extensions::bench::u64_from_be_bytes_7_aligned ... bench: 201 ns/iter (+/- 7) test io::extensions::bench::u64_from_be_bytes_7_unaligned ... bench: 210 ns/iter (+/- 9) test io::extensions::bench::u64_from_be_bytes_8_aligned ... bench: 163 ns/iter (+/- 7) test io::extensions::bench::u64_from_be_bytes_8_unaligned ... bench: 163 ns/iter (+/- 10) callgrind rustc -S rust/src/test/bench/sudoku.rs u64_from_be_bytes self: 1.78%		2014-01-10 14:01:34 -08:00
doc	"As long an iterator" => "As long as an iterator"	2014-01-10 15:05:54 +01:00
man	remove the rusti command	2013-10-16 22:54:38 -04:00
mk	Register new snapshots	2014-01-09 09:18:59 -08:00
src	auto merge of #11448 : c-a/rust/u64_from_be_bytes, r=alexcrichton	2014-01-10 14:01:34 -08:00
.gitattributes	drop the linenoise library	2013-10-16 22:57:51 -04:00
.gitignore	Remove *.pot files and ignore them now.	2014-01-10 07:21:32 +09:00
.gitmodules	Update submodules to point to rust-lang repos	2014-01-09 20:21:22 -08:00
.mailmap	.mailmap: tolerate different names, emails in shortlog	2013-06-05 23:26:00 +05:30
AUTHORS.txt	Update AUTHORS.txt	2014-01-06 15:01:34 -08:00
configure	Register new snapshots	2014-01-09 09:18:59 -08:00
CONTRIBUTING.md	syntax: Add the Bug Report HOWTO URL to the ICE message	2013-10-21 12:11:24 -07:00
COPYRIGHT	Update some copyright dates	2014-01-08 18:04:43 -08:00
LICENSE-APACHE	Update license, add license boilerplate to most files. Remainder will follow.	2012-12-03 17:12:14 -08:00
LICENSE-MIT	Update some copyright dates	2014-01-08 18:04:43 -08:00
Makefile.in	mk: Fix the naming of the windows installer harder	2014-01-07 17:01:07 -08:00
README.md	Bump more version numbers to 0.9	2014-01-02 10:55:28 -08:00
RELEASES.txt	More 0.9 release notes	2014-01-06 14:52:16 -08:00

README.md

The Rust Programming Language

This is a compiler for Rust, including standard libraries, tools and documentation.

Quick Start

Windows

Download and use the installer.
Read the tutorial.
Enjoy!

Note: Windows users should read the detailed getting started notes on the wiki. Even when using the binary installer the Windows build requires a MinGW installation, the precise details of which are not discussed here.

Linux / OS X

Install the prerequisites (if not already installed)
- g++ 4.4 or clang++ 3.x
- python 2.6 or later (but not 3.x)
- perl 5.0 or later
- gnu make 3.81 or later
- curl
Download and build Rust You can either download a tarball or build directly from the repo.

To build from the tarball do:
```
 $ curl -O http://static.rust-lang.org/dist/rust-0.9.tar.gz
 $ tar -xzf rust-0.9.tar.gz
 $ cd rust-0.9
```
Or to build from the repo do:
```
 $ git clone https://github.com/mozilla/rust.git
 $ cd rust
```
Now that you have Rust's source code, you can configure and build it:
```
 $ ./configure
 $ make && make install
```
You may need to use sudo make install if you do not normally have permission to modify the destination directory. The install locations can be adjusted by passing a --prefix argument to configure. Various other options are also supported, pass --help for more information on them.

When complete, make install will place several programs into /usr/local/bin: rustc, the Rust compiler; rustdoc, the API-documentation tool, and rustpkg, the Rust package manager and build system.
Read the tutorial.
Enjoy!

Notes

Since the Rust compiler is written in Rust, it must be built by a precompiled "snapshot" version of itself (made in an earlier state of development). As such, source builds require a connection to the Internet, to fetch snapshots, and an OS that can execute the available snapshot binaries.

Snapshot binaries are currently built and tested on several platforms:

Windows (7, Server 2008 R2), x86 only
Linux (various distributions), x86 and x86-64
OSX 10.6 ("Snow Leopard") or greater, x86 and x86-64

You may find that other platforms work, but these are our "tier 1" supported build environments that are most likely to work.

Rust currently needs about 1.8G of RAM to build without swapping; if it hits swap, it will take a very long time to build.

There is lots more documentation in the wiki.

License

Rust is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.