T

Benedikt Rascher-Friesenhausen e10a346356 Optimise memcmp for speed

I saw that in other parts of the `string` module iterations over `usize` were
used to increase iteration speed.  In this patch I apply the same logic to
`memcmp`.  With this change I measured a 7x speedup for `memcmp` on a ~1MB
buffer (comparing two buffers with the same content) on my machine (i7-7500U),
but I did not do any real world benchmarking for the change.  The increase in
speed comes with the tradeoff of both increased complexity and larger generated
assembly code for the function.

I tested the correctness of the implementation by generating two randomly filled
buffers and comparing the `memcmp` result of the old implementation against this
new one.

I ran the tests and currently currently three of them fail:
  - netdb (fails to run)
  - stdio/rename (fails to verify)
  - unistd/pipe (fails to verify)

They do so though regardless of this change, so I don't think they are related.

2018-10-07 10:25:19 +02:00

cbindgen @ 95821b3bbe

Use a sys module for OS specific information

2018-03-15 00:53:35 +00:00

core_io @ 5a15b81b2f

Add core_io

2018-09-24 20:19:37 -06:00

include

Implement timer* macros, and GNU's getopt_long

2018-10-06 16:46:35 +02:00

openlibm @ b7b3b4bc31

Add very basic example

2018-03-01 20:26:40 -07:00

ralloc @ f9b8c35fe8

Go back to patched ralloc

2018-07-11 09:59:28 -06:00

src

Optimise memcmp for speed

2018-10-07 10:25:19 +02:00

tests

Implement strcasestr

2018-10-06 17:37:50 +02:00

va_list @ 1e7a8b6b6f

Add scanf

2018-06-21 17:16:56 +02:00

.gitignore

Fix makefile for tests, add sysroot target

2018-08-27 13:02:13 -06:00

.gitlab-ci.yml

Fix CI

2018-09-04 15:31:43 +02:00

.gitmodules

Add core_io

2018-09-24 20:19:37 -06:00

.travis.yml

ci: Ensure that the correct compiler is installed

2018-04-08 13:52:34 +00:00

bindgen_transform.sh

mkdir and rmdir

2018-03-08 19:45:16 -07:00

build.rs

Make pal functions take cstr

2018-08-27 08:33:12 -06:00

Cargo.lock

Initial regex.h implementation

2018-10-05 18:07:43 +02:00

Cargo.toml

Initial regex.h implementation

2018-10-05 18:07:43 +02:00

ci.sh

Fix CI

2018-03-26 19:34:45 -06:00

CONTRIBUTING.md

Add contribution guidelines/tutorial

2018-09-05 13:03:46 +00:00

fmt.sh

Format

2018-08-27 06:35:30 -06:00

include.sh

Fix headers with directories

2018-08-26 12:40:19 -06:00

LICENSE

Create LICENSE

2018-03-07 17:29:33 -07:00

Makefile

Initial regex.h implementation

2018-10-05 18:07:43 +02:00

README.md

Add contribution guidelines/tutorial

2018-09-05 13:03:46 +00:00

rust-toolchain

Update to new ralloc, new panic implementation, new compiler-builtins

2018-06-24 09:50:15 -06:00

rustfmt.toml

Run fmt.sh

2018-07-03 09:33:41 +02:00

README.md

relibc

relibc is a portable POSIX C standard library written in Rust. It is under heavy development, and currently supports Redox and Linux.

The motivation for this project is twofold: Reduce issues the redox crew was having with newlib, and create a safer alternative to a C standard library written in C. It is mainly designed to be used under redox, as an alternative to newlib, but it also supports linux syscalls via the sc crate.

README.md

relibc

Contributing

Supported OSes

Supported architectures