117 lines
2.7 KiB
Rust
117 lines
2.7 KiB
Rust
use criterion::{black_box, criterion_group, criterion_main, Criterion};
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use itertools::Itertools;
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// approximate 100_000 iterations for each combination
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const N1: usize = 100_000;
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const N2: usize = 448;
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const N3: usize = 86;
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const N4: usize = 41;
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const N14: usize = 21;
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fn comb_for1(c: &mut Criterion) {
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c.bench_function("comb for1", move |b| {
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b.iter(|| {
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for i in 0..N1 {
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black_box(vec![i]);
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}
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})
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});
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}
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fn comb_for2(c: &mut Criterion) {
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c.bench_function("comb for2", move |b| {
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b.iter(|| {
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for i in 0..N2 {
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for j in (i + 1)..N2 {
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black_box(vec![i, j]);
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}
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}
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})
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});
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}
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fn comb_for3(c: &mut Criterion) {
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c.bench_function("comb for3", move |b| {
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b.iter(|| {
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for i in 0..N3 {
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for j in (i + 1)..N3 {
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for k in (j + 1)..N3 {
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black_box(vec![i, j, k]);
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}
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}
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}
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})
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});
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}
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fn comb_for4(c: &mut Criterion) {
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c.bench_function("comb for4", move |b| {
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b.iter(|| {
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for i in 0..N4 {
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for j in (i + 1)..N4 {
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for k in (j + 1)..N4 {
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for l in (k + 1)..N4 {
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black_box(vec![i, j, k, l]);
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}
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}
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}
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}
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})
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});
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}
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fn comb_c1(c: &mut Criterion) {
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c.bench_function("comb c1", move |b| {
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b.iter(|| {
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for combo in (0..N1).combinations(1) {
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black_box(combo);
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}
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})
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});
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}
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fn comb_c2(c: &mut Criterion) {
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c.bench_function("comb c2", move |b| {
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b.iter(|| {
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for combo in (0..N2).combinations(2) {
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black_box(combo);
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}
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})
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});
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}
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fn comb_c3(c: &mut Criterion) {
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c.bench_function("comb c3", move |b| {
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b.iter(|| {
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for combo in (0..N3).combinations(3) {
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black_box(combo);
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}
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})
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});
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}
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fn comb_c4(c: &mut Criterion) {
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c.bench_function("comb c4", move |b| {
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b.iter(|| {
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for combo in (0..N4).combinations(4) {
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black_box(combo);
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}
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})
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});
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}
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fn comb_c14(c: &mut Criterion) {
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c.bench_function("comb c14", move |b| {
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b.iter(|| {
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for combo in (0..N14).combinations(14) {
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black_box(combo);
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}
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})
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});
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}
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criterion_group!(
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benches, comb_for1, comb_for2, comb_for3, comb_for4, comb_c1, comb_c2, comb_c3, comb_c4,
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comb_c14,
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);
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criterion_main!(benches);
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