Struct __m256

#[repr(simd)]
pub struct __m256([f32; 8]);

Available on x86 or x86-64 only.

256-bit wide set of eight f32 types, x86-specific

This type is the same as the __m256 type defined by Intel, representing a 256-bit SIMD register which internally is consisted of eight packed f32 instances. Usage of this type typically corresponds to the avx and up target features for x86/x86_64.

Note that unlike __m256i, the integer version of the 256-bit registers, this __m256 type has one interpretation. Each instance of __m256 always corresponds to f32x8, or eight f32 types packed together.

The in-memory representation of this type is the same as the one of an equivalent array (i.e. the in-memory order of elements is the same, and there is no padding between two consecutive elements); however, the alignment is different and equal to the size of the type. Note that the ABI for function calls may not be the same.

Most intrinsics using __m256 are prefixed with _mm256_ and are suffixed with “ps” (or otherwise contain “ps”). Not to be confused with “pd” which is used for __m256d.

Examples

#[cfg(target_arch = "x86")]
use std::arch::x86::*;
#[cfg(target_arch = "x86_64")]
use std::arch::x86_64::*;

let eight_zeros = _mm256_setzero_ps();
let eight_ones = _mm256_set1_ps(1.0);
let eight_floats = _mm256_set_ps(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0);

Tuple Fields

0: [f32; 8]

Implementations

impl __m256

fn splat(value: f32) -> __m256

Using my_simd([x; N]) seemingly fails tests, so use this internal helper for it instead.

const fn as_array(&self) -> &[f32; 8]

Returns an array reference containing the entire SIMD vector.

fn as_mut_array(&mut self) -> &mut [f32; 8]

Returns a mutable array reference containing the entire SIMD vector.

impl __m256

pub(crate) fn as_f32x8(self) -> f32x8

Trait Implementations

impl Clone for __m256

fn clone(&self) -> __m256

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for __m256

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<Simd<f32, 8>> for __m256

fn from(value: f32x8) -> __m256

Converts to this type from the input type.

impl From<__m256> for f32x8

fn from(value: __m256) -> f32x8

Converts to this type from the input type.

impl Copy for __m256