rustfft 4.1.0

Compute FFTs of any size in O(nlogn) time, in pure Rust.
Documentation 
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//! Show how to use an `FFT` object from multiple threads

use std::sync::Arc;
use std::thread;

use rustfft::num_complex::Complex32;
use rustfft::FFTplanner;

fn main() {
    let inverse = false;
    let mut planner = FFTplanner::new(inverse);
    let fft = planner.plan_fft(100);

    let threads: Vec<thread::JoinHandle<_>> = (0..2)
        .map(|_| {
            let fft_copy = Arc::clone(&fft);
            thread::spawn(move || {
                let mut signal = vec![Complex32::new(0.0, 0.0); 100];
                let mut spectrum = vec![Complex32::new(0.0, 0.0); 100];
                fft_copy.process(&mut signal, &mut spectrum);
            })
        })
        .collect();

    for thread in threads {
        thread.join().unwrap();
    }
}