mirror of https://github.com/rust-lang/rust
49 lines
1.1 KiB
Rust
49 lines
1.1 KiB
Rust
//@ run-pass
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#![feature(repr_simd, intrinsics)]
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extern "rust-intrinsic" {
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fn simd_as<T, U>(x: T) -> U;
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}
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#[derive(Copy, Clone)]
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#[repr(simd)]
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struct V<T>([T; 2]);
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fn main() {
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unsafe {
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let u = V::<u32>([u32::MIN, u32::MAX]);
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let i: V<i16> = simd_as(u);
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assert_eq!(i.0[0], u.0[0] as i16);
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assert_eq!(i.0[1], u.0[1] as i16);
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}
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unsafe {
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let f = V::<f32>([f32::MIN, f32::MAX]);
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let i: V<i16> = simd_as(f);
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assert_eq!(i.0[0], f.0[0] as i16);
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assert_eq!(i.0[1], f.0[1] as i16);
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}
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unsafe {
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let f = V::<f32>([f32::MIN, f32::MAX]);
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let u: V<u8> = simd_as(f);
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assert_eq!(u.0[0], f.0[0] as u8);
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assert_eq!(u.0[1], f.0[1] as u8);
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}
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unsafe {
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let f = V::<f64>([f64::MIN, f64::MAX]);
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let i: V<isize> = simd_as(f);
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assert_eq!(i.0[0], f.0[0] as isize);
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assert_eq!(i.0[1], f.0[1] as isize);
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}
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unsafe {
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let f = V::<f64>([f64::MIN, f64::MAX]);
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let u: V<usize> = simd_as(f);
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assert_eq!(u.0[0], f.0[0] as usize);
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assert_eq!(u.0[1], f.0[1] as usize);
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}
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}
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