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