src/test/run-pass/simd-generics.rs

// Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.



#![feature(repr_simd, platform_intrinsics)]

use std::ops;

#[repr(simd)]
#[derive(Copy, Clone)]
struct f32x4(f32, f32, f32, f32);

extern "platform-intrinsic" {
    fn simd_add<T>(x: T, y: T) -> T;
}

fn add<T: ops::Add<Output=T>>(lhs: T, rhs: T) -> T {
    lhs + rhs
}

impl ops::Add for f32x4 {
    type Output = f32x4;

    fn add(self, rhs: f32x4) -> f32x4 {
        unsafe {simd_add(self, rhs)}
    }
}

pub fn main() {
    let lr = f32x4(1.0f32, 2.0f32, 3.0f32, 4.0f32);

    // lame-o
    let f32x4(x, y, z, w) = add(lr, lr);
    assert_eq!(x, 2.0f32);
    assert_eq!(y, 4.0f32);
    assert_eq!(z, 6.0f32);
    assert_eq!(w, 8.0f32);
}