d54896343c
Currently there is a macro called `llvm_intrinsically_optimized` that uses an intrinsic rather than the function implementation if the configuration is correct. Add a new macro `select_implementation` that is somewhat cleaner to use. In the future, we can update this macro with more fields to specify other implementations that may be selected, such as something architecture-specific or e.g. using a generic implementation for `f32` routines, rather than those that convert to `f64`. This introduces a `macros` module within `math/support`. We will be able to move more things here later.
libm
A port of MUSL's libm to Rust.
Goals
The short term goal of this library is to enable math support (e.g. sin, atan2) for the
wasm32-unknown-unknown target (cf. rust-lang/compiler-builtins). The longer
term goal is to enable math support in the core crate.
Already usable
This crate is on crates.io and can be used today in stable #![no_std] programs.
The API documentation can be found here.
Benchmark
The benchmarks are located in crates/libm-bench and require a nightly Rust toolchain.
To run all benchmarks:
cargo +nightly bench --all
Contributing
Please check CONTRIBUTING.md
Minimum Rust version policy
This crate supports rustc 1.63 and newer.
License
Usage is licensed under the MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT).
Contribution
Contributions are licensed under both the MIT license and the Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0). Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as mentioned, without any additional terms or conditions.
See LICENSE.txt for full details.