use rspack_benchmark::{black_box, criterion_group, criterion_main, Criterion};

fn fibonacci(n: u64) -> u64 {
  match n {
    0 => 1,
    1 => 1,
    n => fibonacci(n - 1) + fibonacci(n - 2),
  }
}

pub fn criterion_benchmark(c: &mut Criterion) {
  c.bench_function("fib 20", |b| b.iter(|| fibonacci(black_box(20))));
}

criterion_group!(benches, criterion_benchmark);
criterion_main!(benches);
