Rust-Simd Hello World
我找不到Rust-Simd的工作示例。我能找到的最接近的是。调整后，它变成了：
#![feature(core)]
#![feature(portable_simd)]
use std::simd::f32x4;
fn main() {
let x = f32x4(1.0, 1.0, 1.0, 1.0);
}
但是在建造过程中仍然抱怨货物
error[E0423]: expected function, found type alias `f32x4`
--> src/main.rs:7:13
|
7 | let x = f32x4(1.0, 1.0, 1.0, 1.0);
| ^^^^^
|
= note: can't use a type alias as a constructor
。
我如何获得这个简单的示例？
cargo.toml：
[package]
name = "rust-simd"
version = "0.1.0"
edition = "2021"
[dependencies]
我有夜间已经打开了：Rustup默认默认夜间。
I couldn't find a working example for Rust-SIMD. The closest I can find is this one. After adjusting, it becomes:
#![feature(core)]
#![feature(portable_simd)]
use std::simd::f32x4;
fn main() {
let x = f32x4(1.0, 1.0, 1.0, 1.0);
}
But still cargo complains
error[E0423]: expected function, found type alias `f32x4`
--> src/main.rs:7:13
|
7 | let x = f32x4(1.0, 1.0, 1.0, 1.0);
| ^^^^^
|
= note: can't use a type alias as a constructor
during building.
How do I get this simple example working?
Cargo.toml:
[package]
name = "rust-simd"
version = "0.1.0"
edition = "2021"
[dependencies]
I have nightly switched on already: rustup default nightly.
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用
std :: Simd是type :: From（array），例如f32x4 ::来自（[1.0，1.0，1.0，1.0， 1.0，1.0]）。提到 。The way to construct a SIMD vector with
std::simdistype::from(array), for examplef32x4::from([1.0, 1.0, 1.0, 1.0]). This is mentioned in the documentation.＃！[feature（portable_simd）]应该在顶部包装的主文件，例如Main.R。
正如您已经提到的：
然后在您使用SIMD的文件中，您需要
这样：
然后simd :: from_array的方法期望一个数组[f32; n_vec]其中n_vec是范围内2的功率量[1，64]
：例如：
#![feature(portable_simd)]should be at the topof the main file of the package, e.g. main.rs.
and as you already mentioned:
then in the file where you are using simd, you need
this:
then the method Simd::from_array expects an array [f32; N_VEC] where N_VEC is a const of power of 2 in range [1, 64]
for example: