fftw 0.6.1

safe wrapper of FFTW3
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Rust binding of FFTW

Examples

Complex-to-Complex

use fftw::array::AlignedVec;
use fftw::plan::*;
use fftw::types::*;
use std::f64::consts::PI;

let n = 128;
let mut plan: C2CPlan64 = C2CPlan::aligned(&[n], Sign::Forward, Flag::MEASURE).unwrap();
let mut a = AlignedVec::new(n);
let mut b = AlignedVec::new(n);
let k0 = 2.0 * PI / n as f64;
for i in 0..n {
a[i] = c64::new((k0 * i as f64).cos(), 0.0);
}
plan.c2c(&mut a, &mut b).unwrap();

Complex-to-Real

use fftw::array::AlignedVec;
use fftw::plan::*;
use fftw::types::*;
use std::f64::consts::PI;

let n = 128;
let mut c2r: C2RPlan64 = C2RPlan::aligned(&[n], Flag::MEASURE).unwrap();
let mut a = AlignedVec::new(n / 2 + 1);
let mut b = AlignedVec::new(n);
for i in 0..(n / 2 + 1) {
a[i] = c64::new(1.0, 0.0);
}
c2r.c2r(&mut a, &mut b).unwrap();