64 lines
2.0 KiB
Rust
64 lines
2.0 KiB
Rust
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// ignore-emscripten
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// min-llvm-version 7.0
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// error-pattern: panicked
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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 = ::std::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(::std::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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