40 lines
1.1 KiB
Rust
40 lines
1.1 KiB
Rust
#![cfg_attr(feature = "cargo-clippy", allow(clippy::float_cmp, map_clone))]
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use bencher::{Bencher, benchmark_group, benchmark_main};
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/// Create a random vector of random floats in [0, 1].
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fn initialize_vec() -> Vec<f64> {
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use rand_distr::{Uniform, Distribution};
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use rand::SeedableRng;
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let range = Uniform::new(0.0, 1.0);
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let n = 1_000_000;
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let mut values = Vec::with_capacity(n);
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let mut rng = rand_xoshiro::Xoshiro256StarStar::from_seed(
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[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
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17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32]);
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for _ in 0..n {
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values.push(range.sample(&mut rng));
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}
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values
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}
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fn bench_average(b: &mut Bencher) {
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let values = initialize_vec();
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b.iter(|| {
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let a: average::Min = values.iter().map(|x| *x).collect();
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a
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});
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}
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fn bench_iter(b: &mut Bencher) {
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let values = initialize_vec();
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b.iter(|| {
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let mut it = values.iter();
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let init: f64 = *it.next().unwrap();
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it.fold(init, |a, &b| a.min(b))
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});
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}
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benchmark_group!(benches, bench_average, bench_iter);
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benchmark_main!(benches);
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