Struct realfft::RealToComplex

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

An FFT that takes a real-valued input vector of length 2*N and transforms it to a complex spectrum of length N+1.

Implementations

impl RealToComplex<f64>

pub fn new(length: usize) -> Result<Self, Box<dyn Error>>

Create a new RealToComplex FFT for input data of a given length. Returns an error if the length is not even.

pub fn process(
    &mut self,
    input: &mut [f64],
    output: &mut [Complex<f64>]
) -> Result<(), Box<dyn Error>>

Transform a vector of 2*N real-valued samples, storing the result in the N+1 element long complex output vector. The input buffer is used as scratch space, so the contents of input should be considered garbage after calling.

impl RealToComplex<f32>

pub fn new(length: usize) -> Result<Self, Box<dyn Error>>

Create a new RealToComplex FFT for input data of a given length. Returns an error if the length is not even.

pub fn process(
    &mut self,
    input: &mut [f32],
    output: &mut [Complex<f32>]
) -> Result<(), Box<dyn Error>>

Transform a vector of 2*N real-valued samples, storing the result in the N+1 element long complex output vector. The input buffer is used as scratch space, so the contents of input should be considered garbage after calling.