use std::env;
use std::str::FromStr;
use utilities::gen_random_signal;
use phastft::fft_64;
use phastft::planner::Direction;
fn benchmark_fft_64(n: usize) {
let big_n = 1 << n;
let mut reals = vec![0.0; big_n];
let mut imags = vec![0.0; big_n];
gen_random_signal(&mut reals, &mut imags);
let now = std::time::Instant::now();
fft_64(&mut reals, &mut imags, Direction::Forward);
let elapsed = now.elapsed().as_micros();
println!("{elapsed}");
}
fn main() {
let args: Vec<String> = env::args().collect();
assert_eq!(args.len(), 2, "Usage {} <n>", args[0]);
let n = usize::from_str(&args[1]).unwrap();
benchmark_fft_64(n);
}