mirror of
https://github.com/rust-lang/rust.git
synced 2025-10-28 03:24:11 +00:00
6b5e8b20f0
Update test traits to support `f16` and `f128`, as applicable. Add the new routines (`fabs` and `copysign` for `f16` and `f128`) to the list of all operations.
56 lines
1.7 KiB
Rust
56 lines
1.7 KiB
Rust
//! Compare our implementations with the result of musl functions, as provided by `musl-math-sys`.
|
|
//!
|
|
//! Currently this only tests randomized inputs. In the future this may be improved to test edge
|
|
//! cases or run exhaustive tests.
|
|
//!
|
|
//! Note that musl functions do not always provide 0.5ULP rounding, so our functions can do better
|
|
//! than these results.
|
|
|
|
// There are some targets we can't build musl for
|
|
#![cfg(feature = "build-musl")]
|
|
|
|
use libm_test::gen::random;
|
|
use libm_test::gen::random::RandomInput;
|
|
use libm_test::{CheckBasis, CheckCtx, CheckOutput, MathOp, TupleCall};
|
|
|
|
macro_rules! musl_rand_tests {
|
|
(
|
|
fn_name: $fn_name:ident,
|
|
attrs: [$($attr:meta),*],
|
|
) => {
|
|
paste::paste! {
|
|
#[test]
|
|
$(#[$attr])*
|
|
fn [< musl_random_ $fn_name >]() {
|
|
test_one_random::<libm_test::op::$fn_name::Routine>(musl_math_sys::$fn_name);
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
fn test_one_random<Op>(musl_fn: Op::CFn)
|
|
where
|
|
Op: MathOp,
|
|
Op::RustArgs: RandomInput,
|
|
{
|
|
let ctx = CheckCtx::new(Op::IDENTIFIER, CheckBasis::Musl);
|
|
let cases = random::get_test_cases::<Op::RustArgs>(&ctx);
|
|
|
|
for input in cases {
|
|
let musl_res = input.call(musl_fn);
|
|
let crate_res = input.call(Op::ROUTINE);
|
|
|
|
crate_res.validate(musl_res, input, &ctx).unwrap();
|
|
}
|
|
}
|
|
|
|
libm_macros::for_each_function! {
|
|
callback: musl_rand_tests,
|
|
// Musl does not support `f16` and `f128` on all platforms.
|
|
skip: [copysignf16, copysignf128, fabsf16, fabsf128],
|
|
attributes: [
|
|
#[cfg_attr(x86_no_sse, ignore)] // FIXME(correctness): wrong result on i586
|
|
[exp10, exp10f, exp2, exp2f, rint]
|
|
],
|
|
}
|