mirror of
https://github.com/rust-lang/rust.git
synced 2025-10-27 11:05:06 +00:00
96 lines
2.8 KiB
Rust
96 lines
2.8 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::{edge_cases, random, spaced};
|
|
use libm_test::{CheckBasis, CheckCtx, CheckOutput, GeneratorKind, MathOp, TupleCall};
|
|
|
|
const BASIS: CheckBasis = CheckBasis::Musl;
|
|
|
|
fn musl_runner<Op: MathOp>(
|
|
ctx: &CheckCtx,
|
|
cases: impl Iterator<Item = Op::RustArgs>,
|
|
musl_fn: Op::CFn,
|
|
) {
|
|
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();
|
|
}
|
|
}
|
|
|
|
/// Test against musl with generators from a domain.
|
|
macro_rules! musl_tests {
|
|
(
|
|
fn_name: $fn_name:ident,
|
|
attrs: [$($attr:meta),*],
|
|
) => {
|
|
paste::paste! {
|
|
#[test]
|
|
$(#[$attr])*
|
|
fn [< musl_random_ $fn_name >]() {
|
|
type Op = libm_test::op::$fn_name::Routine;
|
|
let ctx = CheckCtx::new(Op::IDENTIFIER, BASIS, GeneratorKind::Random);
|
|
let cases = random::get_test_cases::<<Op as MathOp>::RustArgs>(&ctx);
|
|
musl_runner::<Op>(&ctx, cases, musl_math_sys::$fn_name);
|
|
}
|
|
|
|
#[test]
|
|
$(#[$attr])*
|
|
fn [< musl_edge_case_ $fn_name >]() {
|
|
type Op = libm_test::op::$fn_name::Routine;
|
|
let ctx = CheckCtx::new(Op::IDENTIFIER, BASIS, GeneratorKind::EdgeCases);
|
|
let cases = edge_cases::get_test_cases::<Op>(&ctx);
|
|
musl_runner::<Op>(&ctx, cases, musl_math_sys::$fn_name);
|
|
}
|
|
|
|
#[test]
|
|
$(#[$attr])*
|
|
fn [< musl_quickspace_ $fn_name >]() {
|
|
type Op = libm_test::op::$fn_name::Routine;
|
|
let ctx = CheckCtx::new(Op::IDENTIFIER, BASIS, GeneratorKind::QuickSpaced);
|
|
let cases = spaced::get_test_cases::<Op>(&ctx).0;
|
|
musl_runner::<Op>(&ctx, cases, musl_math_sys::$fn_name);
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
libm_macros::for_each_function! {
|
|
callback: musl_tests,
|
|
attributes: [],
|
|
skip: [
|
|
// TODO integer inputs
|
|
jn,
|
|
jnf,
|
|
ldexp,
|
|
ldexpf,
|
|
scalbn,
|
|
scalbnf,
|
|
yn,
|
|
ynf,
|
|
|
|
// Not provided by musl
|
|
ceilf128,
|
|
ceilf16,
|
|
copysignf128,
|
|
copysignf16,
|
|
fabsf128,
|
|
fabsf16,
|
|
fdimf128,
|
|
fdimf16,
|
|
truncf128,
|
|
truncf16,
|
|
sqrtf16,
|
|
sqrtf128,
|
|
],
|
|
}
|