75 lines
3.1 KiB
Rust
75 lines
3.1 KiB
Rust
#![feature(portable_simd, platform_intrinsics)]
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use std::simd::*;
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fn simd_ops_f32() {
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let a = f32x4::splat(10.0);
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let b = f32x4::from_array([1.0, 2.0, 3.0, -4.0]);
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assert_eq!(-b, f32x4::from_array([-1.0, -2.0, -3.0, 4.0]));
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assert_eq!(a + b, f32x4::from_array([11.0, 12.0, 13.0, 6.0]));
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assert_eq!(a - b, f32x4::from_array([9.0, 8.0, 7.0, 14.0]));
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assert_eq!(a * b, f32x4::from_array([10.0, 20.0, 30.0, -40.0]));
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assert_eq!(b / a, f32x4::from_array([0.1, 0.2, 0.3, -0.4]));
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assert_eq!(a / f32x4::splat(2.0), f32x4::splat(5.0));
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assert_eq!(a % b, f32x4::from_array([0.0, 0.0, 1.0, 2.0]));
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assert_eq!(b.abs(), f32x4::from_array([1.0, 2.0, 3.0, 4.0]));
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}
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fn simd_ops_f64() {
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let a = f64x4::splat(10.0);
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let b = f64x4::from_array([1.0, 2.0, 3.0, -4.0]);
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assert_eq!(-b, f64x4::from_array([-1.0, -2.0, -3.0, 4.0]));
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assert_eq!(a + b, f64x4::from_array([11.0, 12.0, 13.0, 6.0]));
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assert_eq!(a - b, f64x4::from_array([9.0, 8.0, 7.0, 14.0]));
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assert_eq!(a * b, f64x4::from_array([10.0, 20.0, 30.0, -40.0]));
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assert_eq!(b / a, f64x4::from_array([0.1, 0.2, 0.3, -0.4]));
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assert_eq!(a / f64x4::splat(2.0), f64x4::splat(5.0));
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assert_eq!(a % b, f64x4::from_array([0.0, 0.0, 1.0, 2.0]));
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assert_eq!(b.abs(), f64x4::from_array([1.0, 2.0, 3.0, 4.0]));
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}
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fn simd_ops_i32() {
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let a = i32x4::splat(10);
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let b = i32x4::from_array([1, 2, 3, 4]);
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assert_eq!(-b, i32x4::from_array([-1, -2, -3, -4]));
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assert_eq!(a + b, i32x4::from_array([11, 12, 13, 14]));
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assert_eq!(a - b, i32x4::from_array([9, 8, 7, 6]));
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assert_eq!(a * b, i32x4::from_array([10, 20, 30, 40]));
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assert_eq!(a / b, i32x4::from_array([10, 5, 3, 2]));
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assert_eq!(a / i32x4::splat(2), i32x4::splat(5));
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assert_eq!(i32x2::splat(i32::MIN) / i32x2::splat(-1), i32x2::splat(i32::MIN));
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assert_eq!(a % b, i32x4::from_array([0, 0, 1, 2]));
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assert_eq!(i32x2::splat(i32::MIN) % i32x2::splat(-1), i32x2::splat(0));
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assert_eq!(b << i32x4::splat(2), i32x4::from_array([4, 8, 12, 16]));
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assert_eq!(b >> i32x4::splat(1), i32x4::from_array([0, 1, 1, 2]));
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assert_eq!(b & i32x4::splat(2), i32x4::from_array([0, 2, 2, 0]));
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assert_eq!(b | i32x4::splat(2), i32x4::from_array([3, 2, 3, 6]));
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}
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fn simd_intrinsics() {
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extern "platform-intrinsic" {
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fn simd_eq<T, U>(x: T, y: T) -> U;
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fn simd_reduce_any<T>(x: T) -> bool;
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fn simd_select<M, T>(m: M, yes: T, no: T) -> T;
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}
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unsafe {
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// Make sure simd_eq returns all-1 for `true`
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let a = i32x4::splat(10);
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let b = i32x4::from_array([1, 2, 10, 4]);
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let c: i32x4 = simd_eq(a, b);
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assert_eq!(c, i32x4::from_array([0, 0, -1, 0]));
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assert!(!simd_reduce_any(i32x4::splat(0)));
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assert!(simd_reduce_any(i32x4::splat(-1)));
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assert_eq!(simd_select(i8x4::from_array([0, -1, -1, 0]), a, b), i32x4::from_array([1, 10, 10, 4]));
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assert_eq!(simd_select(i8x4::from_array([0, -1, -1, 0]), b, a), i32x4::from_array([10, 2, 10, 10]));
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}
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}
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fn main() {
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simd_ops_f32();
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simd_ops_f64();
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simd_ops_i32();
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simd_intrinsics();
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}
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