Struct rustfft::algorithm::Radix4

pub struct Radix4<T> { /* fields omitted */ }

FFT algorithm optimized for power-of-two sizes

// Computes a forward FFT of size 4096
use rustfft::algorithm::Radix4;
use rustfft::FFT;
use rustfft::num_complex::Complex;
use rustfft::num_traits::Zero;

let mut input:  Vec<Complex<f32>> = vec![Zero::zero(); 4096];
let mut output: Vec<Complex<f32>> = vec![Zero::zero(); 4096];

let fft = Radix4::new(4096, false);
fft.process(&mut input, &mut output);

Methods

impl<T: FFTnum> Radix4<T>

pub fn new(len: usize, inverse: bool) -> Self

Preallocates necessary arrays and precomputes necessary data to efficiently compute the power-of-two FFT

Trait Implementations

impl<T: FFTnum> FFT<T> for Radix4<T>

fn process(&self, input: &mut [Complex<T>], output: &mut [Complex<T>])

Computes an FFT on the input buffer and places the result in the output buffer.

fn process_multi(&self, input: &mut [Complex<T>], output: &mut [Complex<T>])

Divides the input and output buffers into chunks of length self.len(), then computes an FFT on each chunk.

impl<T> IsInverse for Radix4<T>

fn is_inverse(&self) -> bool

Returns false if this instance computes forward FFTs, true for inverse FFTs

impl<T> Length for Radix4<T>

fn len(&self) -> usize

The FFT size that this algorithm can process