pub fn ifft_batch(signals: &[(Vec<f32>, Vec<f32>)]) -> Vec<Vec<f32>>Expand description
Computes the Cooley-Tukey radix-2 IFFT for a batch of complex spectra in a single GPU pass.
Each element of signals is a (real, imag) pair — the direct output of
fft_batch. All pairs must share the same power-of-two length.
Returns one Vec<f32> per input signal, each of length 2 * n:
[0..n]— reconstructed real signal[n..2n]— reconstructed imaginary signal (≈ 0 for real-valued inputs)
§Example
use gpu_fft::{fft_batch, ifft_batch};
let signals = vec![vec![1.0f32, 2.0, 3.0, 4.0]];
let spectra = fft_batch(&signals);
let recovered = ifft_batch(&spectra);