41 lines
1020 B
Rust
41 lines
1020 B
Rust
#[macro_use] extern crate bencher;
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extern crate rand;
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extern crate average;
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extern crate stats;
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use bencher::Bencher;
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/// Create a random vector by sampling from a normal distribution.
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fn initialize_vec() -> Vec<f64> {
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use rand::distributions::{Normal, IndependentSample};
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use rand::{XorShiftRng, SeedableRng};
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let normal = Normal::new(2.0, 3.0);
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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 = XorShiftRng::from_seed([1, 2, 3, 4]);
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for _ in 0..n {
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values.push(normal.ind_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 m: average::MeanWithError = values.iter().map(|x| *x).collect();
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m
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});
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}
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fn bench_stats(b: &mut Bencher) {
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let values = initialize_vec();
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b.iter(|| {
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let m: stats::OnlineStats = values.iter().map(|x| *x).collect();
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m
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});
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}
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benchmark_group!(benches, bench_average, bench_stats);
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benchmark_main!(benches);
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