mirror of
https://github.com/rust-lang/rust.git
synced 2025-10-28 11:38:01 +00:00
54 lines
1.6 KiB
Rust
54 lines
1.6 KiB
Rust
// Copied from https://github.com/rust-lang/rust/blob/3fe3b89cd57229343eeca753fdd8c63d9b03c65c/src/test/ui/simd/intrinsic/float-minmax-pass.rs
|
|
// run-pass
|
|
// ignore-emscripten
|
|
|
|
// Test that the simd_f{min,max} intrinsics produce the correct results.
|
|
|
|
#![feature(repr_simd, platform_intrinsics)]
|
|
#![allow(non_camel_case_types)]
|
|
|
|
#[repr(simd)]
|
|
#[derive(Copy, Clone, PartialEq, Debug)]
|
|
struct f32x4(pub f32, pub f32, pub f32, pub f32);
|
|
|
|
extern "platform-intrinsic" {
|
|
fn simd_fmin<T>(x: T, y: T) -> T;
|
|
fn simd_fmax<T>(x: T, y: T) -> T;
|
|
}
|
|
|
|
fn main() {
|
|
let x = f32x4(1.0, 2.0, 3.0, 4.0);
|
|
let y = f32x4(2.0, 1.0, 4.0, 3.0);
|
|
|
|
#[cfg(not(any(target_arch = "mips", target_arch = "mips64")))]
|
|
let nan = f32::NAN;
|
|
// MIPS hardware treats f32::NAN as SNAN. Clear the signaling bit.
|
|
// See https://github.com/rust-lang/rust/issues/52746.
|
|
#[cfg(any(target_arch = "mips", target_arch = "mips64"))]
|
|
let nan = f32::from_bits(f32::NAN.to_bits() - 1);
|
|
|
|
let n = f32x4(nan, nan, nan, nan);
|
|
|
|
unsafe {
|
|
let min0 = simd_fmin(x, y);
|
|
let min1 = simd_fmin(y, x);
|
|
assert_eq!(min0, min1);
|
|
let e = f32x4(1.0, 1.0, 3.0, 3.0);
|
|
assert_eq!(min0, e);
|
|
let minn = simd_fmin(x, n);
|
|
assert_eq!(minn, x);
|
|
let minn = simd_fmin(y, n);
|
|
assert_eq!(minn, y);
|
|
|
|
let max0 = simd_fmax(x, y);
|
|
let max1 = simd_fmax(y, x);
|
|
assert_eq!(max0, max1);
|
|
let e = f32x4(2.0, 2.0, 4.0, 4.0);
|
|
assert_eq!(max0, e);
|
|
let maxn = simd_fmax(x, n);
|
|
assert_eq!(maxn, x);
|
|
let maxn = simd_fmax(y, n);
|
|
assert_eq!(maxn, y);
|
|
}
|
|
}
|