102 lines
3.1 KiB
Rust
102 lines
3.1 KiB
Rust
use criterion::{black_box, criterion_group, criterion_main, BenchmarkId, Criterion};
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use rusty_numbers::num::Unsigned;
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use rusty_numbers::{factorial, fibonacci, it_factorial, mem_fibonacci, rec_fibonacci};
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fn bench_factorial(c: &mut Criterion) {
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let mut group = c.benchmark_group("Factorials");
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for i in [0usize, 5, 10, 15, 20, 25, 30, 34].iter() {
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group.bench_with_input(BenchmarkId::new("Recursive naive", i), i, |b, i| {
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b.iter(|| factorial(black_box(*i)))
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});
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group.bench_with_input(BenchmarkId::new("Iterative", i), i, |b, i| {
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b.iter(|| it_factorial(black_box(*i)))
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});
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}
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group.finish();
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}
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fn bench_fibonacci(c: &mut Criterion) {
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let mut group = c.benchmark_group("Fibonacci");
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for i in [0usize, 10, 20, 30, 40, 50, 70, 93, 140, 186].iter() {
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group.bench_with_input(BenchmarkId::new("Recursive memoized", i), i, |b, i| {
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b.iter(|| mem_fibonacci(black_box(*i)))
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});
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group.bench_with_input(BenchmarkId::new("Iterative", i), i, |b, i| {
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b.iter(|| fibonacci(black_box(*i)))
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});
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}
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group.finish();
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let mut group = c.benchmark_group("Recursive Fibonacci");
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for i in [0usize, 10, 20, 25, 26, 27, 28, 29, 30].iter() {
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group.bench_with_input(BenchmarkId::new("Naive Recursive", i), i, |b, i| {
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b.iter(|| rec_fibonacci(black_box(*i)))
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});
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}
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group.finish();
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}
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fn bench_gcd(c: &mut Criterion) {
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let mut group = c.benchmark_group("GCD");
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#[derive(Debug)]
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struct Gcd {
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left: u128,
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right: u128,
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left_fib: u128,
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right_fib: u128,
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}
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impl Gcd {
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fn new(left: u128, right: u128) -> Self {
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Gcd {
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left,
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right,
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left_fib: fibonacci(left as usize).unwrap(),
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right_fib: fibonacci(right as usize).unwrap(),
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}
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}
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}
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let max = Gcd::new(185, 186);
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let med = Gcd::new(92, 93);
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let small = Gcd::new(14, 15);
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for input in [small, med, max].iter() {
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group.bench_with_input(
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BenchmarkId::new("Binary", input.left),
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input,
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|bench, input| {
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let a = input.left_fib;
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let b = input.right_fib;
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bench.iter(|| u128::gcd(black_box(a), black_box(b)))
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},
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);
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group.bench_with_input(
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BenchmarkId::new("Stein", input.left),
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input,
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|bench, input| {
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let a = input.left_fib;
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let b = input.right_fib;
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bench.iter(|| u128::stein_gcd(black_box(a), black_box(b)))
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},
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);
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group.bench_with_input(
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BenchmarkId::new("Euclid", input.left),
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input,
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|bench, input| {
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let a = input.left_fib;
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let b = input.right_fib;
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bench.iter(|| u128::e_gcd(black_box(a), black_box(b)))
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},
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);
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}
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group.finish();
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}
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criterion_group!(benches, bench_factorial, bench_fibonacci, bench_gcd);
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criterion_main!(benches);
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