Struct reed_solomon_simd::engine::Avx2

pub struct Avx2 { /* private fields */ }

Optimized Engine using AVX2 instructions.

Avx2 is an optimized engine that follows the same algorithm as NoSimd but takes advantage of the x86 AVX2 SIMD instructions.

Implementations

impl Avx2

pub fn new() -> Self

Creates new Avx2, initializing all tables needed for encoding or decoding.

Currently only difference between encoding/decoding is LogWalsh (128 kiB) which is only needed for decoding.

Trait Implementations

impl Clone for Avx2

fn clone(&self) -> Avx2

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for Avx2

fn default() -> Self

Returns the “default value” for a type.

impl Engine for Avx2

fn fft( &self, data: &mut ShardsRefMut<'_>, pos: usize, size: usize, truncated_size: usize, skew_delta: usize )

In-place decimation-in-time FFT (fast Fourier transform).

fn ifft( &self, data: &mut ShardsRefMut<'_>, pos: usize, size: usize, truncated_size: usize, skew_delta: usize )

In-place decimation-in-time IFFT (inverse fast Fourier transform).

fn mul(&self, x: &mut [u8], log_m: GfElement)

x[] *= log_m

fn xor(x: &mut [u8], y: &[u8])

x[] ^= y[]

fn eval_poly(erasures: &mut [GfElement; 65536], truncated_size: usize)

Evaluate polynomial.

fn fft_skew_end( &self, data: &mut ShardsRefMut<'_>, pos: usize, size: usize, truncated_size: usize )

FFT with skew_delta = pos + size.

fn formal_derivative(data: &mut ShardsRefMut<'_>)

where Self: Sized,

Formal derivative.

fn ifft_skew_end( &self, data: &mut ShardsRefMut<'_>, pos: usize, size: usize, truncated_size: usize )

IFFT with skew_delta = pos + size.

fn xor_within(data: &mut ShardsRefMut<'_>, x: usize, y: usize, count: usize)

where Self: Sized,

data[x .. x + count] ^= data[y .. y + count]