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Support floating point intrinsics in const eval

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This commit is contained in:
hkalbasi 2023-06-02 17:29:17 +03:30
parent f9e3b180b7
commit a6a27a7ff8
4 changed files with 296 additions and 109 deletions
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34
crates/hir-ty/src/consteval/tests/intrinsics.rs
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@ -174,6 +174,40 @@ fn likely() {
);
}
#[test]
fn floating_point() {
check_number(
r#"
extern "rust-intrinsic" {
pub fn sqrtf32(x: f32) -> f32;
pub fn powf32(a: f32, x: f32) -> f32;
pub fn fmaf32(a: f32, b: f32, c: f32) -> f32;
}
const GOAL: f32 = sqrtf32(1.2) + powf32(3.4, 5.6) + fmaf32(-7.8, 1.3, 2.4);
"#,
i128::from_le_bytes(pad16(
&f32::to_le_bytes(1.2f32.sqrt() + 3.4f32.powf(5.6) + (-7.8f32).mul_add(1.3, 2.4)),
true,
)),
);
check_number(
r#"
extern "rust-intrinsic" {
pub fn powif64(a: f64, x: i32) -> f64;
pub fn sinf64(x: f64) -> f64;
pub fn minnumf64(x: f64, y: f64) -> f64;
}
const GOAL: f64 = powif64(1.2, 5) + sinf64(3.4) + minnumf64(-7.8, 1.3);
"#,
i128::from_le_bytes(pad16(
&f64::to_le_bytes(1.2f64.powi(5) + 3.4f64.sin() + (-7.8f64).min(1.3)),
true,
)),
);
}
#[test]
fn atomic() {
check_number(