228c716a43
`rint` had a couple recent failures from the random tests:
---- mp_random_rint stdout ----
Random Mpfr rint arg 1/1: 10000 iterations (10000 total) using `LIBM_SEED=Fl1f69DaJnwkHN2FeuCXaBFRvJYsPvEY`
thread 'mp_random_rint' panicked at crates/libm-test/tests/multiprecision.rs:41:49:
called `Result::unwrap()` on an `Err` value:
input: (-849751480.5001163,) (0xc1c95316dc4003d0,)
expected: -849751481.0 0xc1c95316dc800000
actual: -849751480.0 0xc1c95316dc000000
Caused by:
ulp 8388608 > 100000
And:
---- mp_random_rint stdout ----
Random Mpfr rint arg 1/1: 10000 iterations (10000 total) using `LIBM_SEED=XN7VCGhX3Wu6Mzn8COvJPITyZlGP7gN7`
thread 'mp_random_rint' panicked at crates/libm-test/tests/multiprecision.rs:41:49:
called `Result::unwrap()` on an `Err` value:
input: (-12493089.499809155,) (0xc167d4242ffe6fc5,)
expected: -12493089.0 0xc167d42420000000
actual: -12493090.0 0xc167d42440000000
Caused by:
ulp 536870912 > 100000
It seems we just implement an incorrect rounding mode. Replace the
existing `rint` override with an xfail if the difference is 0.0 <= ε <=
1.0.
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 https://opensource.org/licenses/MIT).
Contribution
Contributions are licensed under both the MIT license and the Apache License, Version 2.0 (LICENSE-APACHE or https://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.