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Diffstat (limited to 'rand/benches/misc.rs')
| -rw-r--r-- | rand/benches/misc.rs | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/rand/benches/misc.rs b/rand/benches/misc.rs deleted file mode 100644 index 8fb3a83..0000000 --- a/rand/benches/misc.rs +++ /dev/null @@ -1,160 +0,0 @@ -// Copyright 2018 Developers of the Rand project. -// -// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or -// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license -// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your -// option. This file may not be copied, modified, or distributed -// except according to those terms. - -#![feature(test)] - -extern crate test; -extern crate rand; - -const RAND_BENCH_N: u64 = 1000; - -use test::Bencher; - -use rand::prelude::*; - -#[bench] -fn misc_gen_bool_const(b: &mut Bencher) { - let mut rng = StdRng::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - let mut accum = true; - for _ in 0..::RAND_BENCH_N { - accum ^= rng.gen_bool(0.18); - } - accum - }) -} - -#[bench] -fn misc_gen_bool_var(b: &mut Bencher) { - let mut rng = StdRng::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - let mut accum = true; - let mut p = 0.18; - for _ in 0..::RAND_BENCH_N { - accum ^= rng.gen_bool(p); - p += 0.0001; - } - accum - }) -} - -#[bench] -fn misc_gen_ratio_const(b: &mut Bencher) { - let mut rng = StdRng::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - let mut accum = true; - for _ in 0..::RAND_BENCH_N { - accum ^= rng.gen_ratio(2, 3); - } - accum - }) -} - -#[bench] -fn misc_gen_ratio_var(b: &mut Bencher) { - let mut rng = StdRng::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - let mut accum = true; - for i in 2..(::RAND_BENCH_N as u32 + 2) { - accum ^= rng.gen_ratio(i, i + 1); - } - accum - }) -} - -#[bench] -fn misc_bernoulli_const(b: &mut Bencher) { - let mut rng = StdRng::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - let d = rand::distributions::Bernoulli::new(0.18); - let mut accum = true; - for _ in 0..::RAND_BENCH_N { - accum ^= rng.sample(d); - } - accum - }) -} - -#[bench] -fn misc_bernoulli_var(b: &mut Bencher) { - let mut rng = StdRng::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - let mut accum = true; - let mut p = 0.18; - for _ in 0..::RAND_BENCH_N { - let d = rand::distributions::Bernoulli::new(p); - accum ^= rng.sample(d); - p += 0.0001; - } - accum - }) -} - -macro_rules! sample_binomial { - ($name:ident, $n:expr, $p:expr) => { - #[bench] - fn $name(b: &mut Bencher) { - let mut rng = SmallRng::from_rng(&mut thread_rng()).unwrap(); - let (n, p) = ($n, $p); - b.iter(|| { - let d = rand::distributions::Binomial::new(n, p); - rng.sample(d) - }) - } - } -} - -sample_binomial!(misc_binomial_1, 1, 0.9); -sample_binomial!(misc_binomial_10, 10, 0.9); -sample_binomial!(misc_binomial_100, 100, 0.99); -sample_binomial!(misc_binomial_1000, 1000, 0.01); -sample_binomial!(misc_binomial_1e12, 1000_000_000_000, 0.2); - -#[bench] -fn gen_1k_iter_repeat(b: &mut Bencher) { - use std::iter; - let mut rng = SmallRng::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - let v: Vec<u64> = iter::repeat(()).map(|()| rng.gen()).take(128).collect(); - v - }); - b.bytes = 1024; -} - -#[bench] -fn gen_1k_sample_iter(b: &mut Bencher) { - use rand::distributions::{Distribution, Standard}; - let mut rng = SmallRng::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - let v: Vec<u64> = Standard.sample_iter(&mut rng).take(128).collect(); - v - }); - b.bytes = 1024; -} - -#[bench] -fn gen_1k_gen_array(b: &mut Bencher) { - let mut rng = SmallRng::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - // max supported array length is 32! - let v: [[u64; 32]; 4] = rng.gen(); - v - }); - b.bytes = 1024; -} - -#[bench] -fn gen_1k_fill(b: &mut Bencher) { - let mut rng = SmallRng::from_rng(&mut thread_rng()).unwrap(); - let mut buf = [0u64; 128]; - b.iter(|| { - rng.fill(&mut buf[..]); - buf - }); - b.bytes = 1024; -} |