rusty-numbers/benches/stock_functions.rs

use criterion::{black_box, criterion_group, criterion_main, BenchmarkId, Criterion};
use rusty_numbers::{factorial, fibonacci, mem_fibonacci, mem_factorial};

fn bench_factorial(c: &mut Criterion) {
    let mut group = c.benchmark_group("Factorials");

    for i in [0usize, 5, 10, 15, 20, 25, 30, 34].iter() {
        group.bench_with_input(BenchmarkId::new("Recursive memoized", i), i, |b, i| {
            b.iter(|| mem_factorial(*i))
        });
        group.bench_with_input(BenchmarkId::new("Recursive naive", i), i, |b, i| {
            b.iter(|| factorial(*i))
        });
    }
    group.finish();
}

fn bench_fibonacci(c: &mut Criterion) {
    let mut group = c.benchmark_group("Fibonacci");

    for i in [0usize, 5, 10, 15, 20, 30].iter() {
        group.bench_with_input(BenchmarkId::new("Recursive memoized", i), i, |b, i| {
            b.iter(|| mem_fibonacci(*i))
        });
        // group.bench_with_input(BenchmarkId::new("Recursive naive", i), i, |b, i| b.iter(|| rec_fibonacci(*i)));
        group.bench_with_input(BenchmarkId::new("Iterative", i), i, |b, i| {
            b.iter(|| fibonacci(*i))
        });
    }
}

criterion_group!(benches, bench_factorial, bench_fibonacci);
criterion_main!(benches);