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Diffstat (limited to 'rand/benches/misc.rs')
-rw-r--r-- | rand/benches/misc.rs | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/rand/benches/misc.rs b/rand/benches/misc.rs deleted file mode 100644 index 4098686..0000000 --- a/rand/benches/misc.rs +++ /dev/null @@ -1,140 +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; - -const RAND_BENCH_N: u64 = 1000; - -use test::Bencher; - -use rand::prelude::*; -use rand::distributions::{Distribution, Standard, Bernoulli}; -use rand_pcg::{Pcg32, Pcg64Mcg}; - -#[bench] -fn misc_gen_bool_const(b: &mut Bencher) { - let mut rng = Pcg32::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - let mut accum = true; - for _ in 0..crate::RAND_BENCH_N { - accum ^= rng.gen_bool(0.18); - } - accum - }) -} - -#[bench] -fn misc_gen_bool_var(b: &mut Bencher) { - let mut rng = Pcg32::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - let mut accum = true; - let mut p = 0.18; - for _ in 0..crate::RAND_BENCH_N { - accum ^= rng.gen_bool(p); - p += 0.0001; - } - accum - }) -} - -#[bench] -fn misc_gen_ratio_const(b: &mut Bencher) { - let mut rng = Pcg32::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - let mut accum = true; - for _ in 0..crate::RAND_BENCH_N { - accum ^= rng.gen_ratio(2, 3); - } - accum - }) -} - -#[bench] -fn misc_gen_ratio_var(b: &mut Bencher) { - let mut rng = Pcg32::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - let mut accum = true; - for i in 2..(crate::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 = Pcg32::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - let d = rand::distributions::Bernoulli::new(0.18).unwrap(); - let mut accum = true; - for _ in 0..crate::RAND_BENCH_N { - accum ^= rng.sample(d); - } - accum - }) -} - -#[bench] -fn misc_bernoulli_var(b: &mut Bencher) { - let mut rng = Pcg32::from_rng(&mut thread_rng()).unwrap(); - b.iter(|| { - let mut accum = true; - let mut p = 0.18; - for _ in 0..crate::RAND_BENCH_N { - let d = Bernoulli::new(p).unwrap(); - accum ^= rng.sample(d); - p += 0.0001; - } - accum - }) -} - -#[bench] -fn gen_1k_iter_repeat(b: &mut Bencher) { - use std::iter; - let mut rng = Pcg64Mcg::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) { - let mut rng = Pcg64Mcg::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 = Pcg64Mcg::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 = Pcg64Mcg::from_rng(&mut thread_rng()).unwrap(); - let mut buf = [0u64; 128]; - b.iter(|| { - rng.fill(&mut buf[..]); - buf - }); - b.bytes = 1024; -} |