Function bit_reverse 

pub fn bit_reverse(x: u32, log2_n: u32) -> u32

Reverse the bottom log2_n bits of x.

Examples

use oxigdal_gpu::fft::bit_reverse;

// 3-bit reversal (for N=8)
assert_eq!(bit_reverse(0b001, 3), 0b100); // 1 → 4
assert_eq!(bit_reverse(0b011, 3), 0b110); // 3 → 6