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-rw-r--r--rand/benches/distributions.rs259
-rw-r--r--rand/benches/generators.rs240
-rw-r--r--rand/benches/misc.rs160
-rw-r--r--rand/benches/seq.rs174
4 files changed, 0 insertions, 833 deletions
diff --git a/rand/benches/distributions.rs b/rand/benches/distributions.rs
deleted file mode 100644
index 069a828..0000000
--- a/rand/benches/distributions.rs
+++ /dev/null
@@ -1,259 +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 std::mem::size_of;
-use test::Bencher;
-use std::time::Duration;
-
-use rand::{Rng, FromEntropy};
-use rand::rngs::SmallRng;
-use rand::distributions::*;
-
-macro_rules! distr_int {
- ($fnn:ident, $ty:ty, $distr:expr) => {
- #[bench]
- fn $fnn(b: &mut Bencher) {
- let mut rng = SmallRng::from_entropy();
- let distr = $distr;
-
- b.iter(|| {
- let mut accum = 0 as $ty;
- for _ in 0..::RAND_BENCH_N {
- let x: $ty = distr.sample(&mut rng);
- accum = accum.wrapping_add(x);
- }
- accum
- });
- b.bytes = size_of::<$ty>() as u64 * ::RAND_BENCH_N;
- }
- }
-}
-
-macro_rules! distr_float {
- ($fnn:ident, $ty:ty, $distr:expr) => {
- #[bench]
- fn $fnn(b: &mut Bencher) {
- let mut rng = SmallRng::from_entropy();
- let distr = $distr;
-
- b.iter(|| {
- let mut accum = 0.0;
- for _ in 0..::RAND_BENCH_N {
- let x: $ty = distr.sample(&mut rng);
- accum += x;
- }
- accum
- });
- b.bytes = size_of::<$ty>() as u64 * ::RAND_BENCH_N;
- }
- }
-}
-
-macro_rules! distr_duration {
- ($fnn:ident, $distr:expr) => {
- #[bench]
- fn $fnn(b: &mut Bencher) {
- let mut rng = SmallRng::from_entropy();
- let distr = $distr;
-
- b.iter(|| {
- let mut accum = Duration::new(0, 0);
- for _ in 0..::RAND_BENCH_N {
- let x: Duration = distr.sample(&mut rng);
- accum = accum.checked_add(x).unwrap_or(Duration::new(u64::max_value(), 999_999_999));
- }
- accum
- });
- b.bytes = size_of::<Duration>() as u64 * ::RAND_BENCH_N;
- }
- }
-}
-
-macro_rules! distr {
- ($fnn:ident, $ty:ty, $distr:expr) => {
- #[bench]
- fn $fnn(b: &mut Bencher) {
- let mut rng = SmallRng::from_entropy();
- let distr = $distr;
-
- b.iter(|| {
- let mut accum = 0u32;
- for _ in 0..::RAND_BENCH_N {
- let x: $ty = distr.sample(&mut rng);
- accum = accum.wrapping_add(x as u32);
- }
- accum
- });
- b.bytes = size_of::<$ty>() as u64 * ::RAND_BENCH_N;
- }
- }
-}
-
-macro_rules! distr_arr {
- ($fnn:ident, $ty:ty, $distr:expr) => {
- #[bench]
- fn $fnn(b: &mut Bencher) {
- let mut rng = SmallRng::from_entropy();
- let distr = $distr;
-
- b.iter(|| {
- let mut accum = 0u32;
- for _ in 0..::RAND_BENCH_N {
- let x: $ty = distr.sample(&mut rng);
- accum = accum.wrapping_add(x[0] as u32);
- }
- accum
- });
- b.bytes = size_of::<$ty>() as u64 * ::RAND_BENCH_N;
- }
- }
-}
-
-// uniform
-distr_int!(distr_uniform_i8, i8, Uniform::new(20i8, 100));
-distr_int!(distr_uniform_i16, i16, Uniform::new(-500i16, 2000));
-distr_int!(distr_uniform_i32, i32, Uniform::new(-200_000_000i32, 800_000_000));
-distr_int!(distr_uniform_i64, i64, Uniform::new(3i64, 123_456_789_123));
-distr_int!(distr_uniform_i128, i128, Uniform::new(-123_456_789_123i128, 123_456_789_123_456_789));
-
-distr_float!(distr_uniform_f32, f32, Uniform::new(2.26f32, 2.319));
-distr_float!(distr_uniform_f64, f64, Uniform::new(2.26f64, 2.319));
-
-const LARGE_SEC: u64 = u64::max_value() / 1000;
-
-distr_duration!(distr_uniform_duration_largest,
- Uniform::new_inclusive(Duration::new(0, 0), Duration::new(u64::max_value(), 999_999_999))
-);
-distr_duration!(distr_uniform_duration_large,
- Uniform::new(Duration::new(0, 0), Duration::new(LARGE_SEC, 1_000_000_000 / 2))
-);
-distr_duration!(distr_uniform_duration_one,
- Uniform::new(Duration::new(0, 0), Duration::new(1, 0))
-);
-distr_duration!(distr_uniform_duration_variety,
- Uniform::new(Duration::new(10000, 423423), Duration::new(200000, 6969954))
-);
-distr_duration!(distr_uniform_duration_edge,
- Uniform::new_inclusive(Duration::new(LARGE_SEC, 999_999_999), Duration::new(LARGE_SEC + 1, 1))
-);
-
-
-// standard
-distr_int!(distr_standard_i8, i8, Standard);
-distr_int!(distr_standard_i16, i16, Standard);
-distr_int!(distr_standard_i32, i32, Standard);
-distr_int!(distr_standard_i64, i64, Standard);
-distr_int!(distr_standard_i128, i128, Standard);
-
-distr!(distr_standard_bool, bool, Standard);
-distr!(distr_standard_alphanumeric, char, Alphanumeric);
-distr!(distr_standard_codepoint, char, Standard);
-
-distr_float!(distr_standard_f32, f32, Standard);
-distr_float!(distr_standard_f64, f64, Standard);
-distr_float!(distr_open01_f32, f32, Open01);
-distr_float!(distr_open01_f64, f64, Open01);
-distr_float!(distr_openclosed01_f32, f32, OpenClosed01);
-distr_float!(distr_openclosed01_f64, f64, OpenClosed01);
-
-// distributions
-distr_float!(distr_exp, f64, Exp::new(1.23 * 4.56));
-distr_float!(distr_normal, f64, Normal::new(-1.23, 4.56));
-distr_float!(distr_log_normal, f64, LogNormal::new(-1.23, 4.56));
-distr_float!(distr_gamma_large_shape, f64, Gamma::new(10., 1.0));
-distr_float!(distr_gamma_small_shape, f64, Gamma::new(0.1, 1.0));
-distr_float!(distr_cauchy, f64, Cauchy::new(4.2, 6.9));
-distr_int!(distr_binomial, u64, Binomial::new(20, 0.7));
-distr_int!(distr_poisson, u64, Poisson::new(4.0));
-distr!(distr_bernoulli, bool, Bernoulli::new(0.18));
-distr_arr!(distr_circle, [f64; 2], UnitCircle::new());
-distr_arr!(distr_sphere_surface, [f64; 3], UnitSphereSurface::new());
-
-// Weighted
-distr_int!(distr_weighted_i8, usize, WeightedIndex::new(&[1i8, 2, 3, 4, 12, 0, 2, 1]).unwrap());
-distr_int!(distr_weighted_u32, usize, WeightedIndex::new(&[1u32, 2, 3, 4, 12, 0, 2, 1]).unwrap());
-distr_int!(distr_weighted_f64, usize, WeightedIndex::new(&[1.0f64, 0.001, 1.0/3.0, 4.01, 0.0, 3.3, 22.0, 0.001]).unwrap());
-distr_int!(distr_weighted_large_set, usize, WeightedIndex::new((0..10000).rev().chain(1..10001)).unwrap());
-
-// construct and sample from a range
-macro_rules! gen_range_int {
- ($fnn:ident, $ty:ident, $low:expr, $high:expr) => {
- #[bench]
- fn $fnn(b: &mut Bencher) {
- let mut rng = SmallRng::from_entropy();
-
- b.iter(|| {
- let mut high = $high;
- let mut accum: $ty = 0;
- for _ in 0..::RAND_BENCH_N {
- accum = accum.wrapping_add(rng.gen_range($low, high));
- // force recalculation of range each time
- high = high.wrapping_add(1) & std::$ty::MAX;
- }
- accum
- });
- b.bytes = size_of::<$ty>() as u64 * ::RAND_BENCH_N;
- }
- }
-}
-
-gen_range_int!(gen_range_i8, i8, -20i8, 100);
-gen_range_int!(gen_range_i16, i16, -500i16, 2000);
-gen_range_int!(gen_range_i32, i32, -200_000_000i32, 800_000_000);
-gen_range_int!(gen_range_i64, i64, 3i64, 123_456_789_123);
-gen_range_int!(gen_range_i128, i128, -12345678901234i128, 123_456_789_123_456_789);
-
-// construct and sample from a floating-point range
-macro_rules! gen_range_float {
- ($fnn:ident, $ty:ident, $low:expr, $high:expr) => {
- #[bench]
- fn $fnn(b: &mut Bencher) {
- let mut rng = SmallRng::from_entropy();
-
- b.iter(|| {
- let mut high = $high;
- let mut low = $low;
- let mut accum: $ty = 0.0;
- for _ in 0..::RAND_BENCH_N {
- accum += rng.gen_range(low, high);
- // force recalculation of range each time
- low += 0.9;
- high += 1.1;
- }
- accum
- });
- b.bytes = size_of::<$ty>() as u64 * ::RAND_BENCH_N;
- }
- }
-}
-
-gen_range_float!(gen_range_f32, f32, -20000.0f32, 100000.0);
-gen_range_float!(gen_range_f64, f64, 123.456f64, 7890.12);
-
-#[bench]
-fn dist_iter(b: &mut Bencher) {
- let mut rng = SmallRng::from_entropy();
- let distr = Normal::new(-2.71828, 3.14159);
- let mut iter = distr.sample_iter(&mut rng);
-
- b.iter(|| {
- let mut accum = 0.0;
- for _ in 0..::RAND_BENCH_N {
- accum += iter.next().unwrap();
- }
- accum
- });
- b.bytes = size_of::<f64>() as u64 * ::RAND_BENCH_N;
-}
diff --git a/rand/benches/generators.rs b/rand/benches/generators.rs
deleted file mode 100644
index a6e3a42..0000000
--- a/rand/benches/generators.rs
+++ /dev/null
@@ -1,240 +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;
-extern crate rand_isaac;
-extern crate rand_chacha;
-extern crate rand_hc;
-extern crate rand_pcg;
-extern crate rand_xorshift;
-extern crate rand_xoshiro;
-
-const RAND_BENCH_N: u64 = 1000;
-const BYTES_LEN: usize = 1024;
-
-use std::mem::size_of;
-use test::{black_box, Bencher};
-
-use rand::prelude::*;
-use rand::rngs::adapter::ReseedingRng;
-use rand::rngs::{OsRng, JitterRng, EntropyRng};
-use rand_isaac::{IsaacRng, Isaac64Rng};
-use rand_chacha::ChaChaRng;
-use rand_hc::{Hc128Rng, Hc128Core};
-use rand_pcg::{Lcg64Xsh32, Mcg128Xsl64};
-use rand_xorshift::XorShiftRng;
-use rand_xoshiro::{Xoshiro256StarStar, Xoshiro256Plus, Xoshiro128StarStar,
- Xoshiro128Plus, Xoroshiro128StarStar, Xoroshiro128Plus, SplitMix64,
- Xoroshiro64StarStar, Xoroshiro64Star};
-
-macro_rules! gen_bytes {
- ($fnn:ident, $gen:expr) => {
- #[bench]
- fn $fnn(b: &mut Bencher) {
- let mut rng = $gen;
- let mut buf = [0u8; BYTES_LEN];
- b.iter(|| {
- for _ in 0..RAND_BENCH_N {
- rng.fill_bytes(&mut buf);
- black_box(buf);
- }
- });
- b.bytes = BYTES_LEN as u64 * RAND_BENCH_N;
- }
- }
-}
-
-gen_bytes!(gen_bytes_xorshift, XorShiftRng::from_entropy());
-gen_bytes!(gen_bytes_xoshiro256starstar, Xoshiro256StarStar::from_entropy());
-gen_bytes!(gen_bytes_xoshiro256plus, Xoshiro256Plus::from_entropy());
-gen_bytes!(gen_bytes_xoshiro128starstar, Xoshiro128StarStar::from_entropy());
-gen_bytes!(gen_bytes_xoshiro128plus, Xoshiro128Plus::from_entropy());
-gen_bytes!(gen_bytes_xoroshiro128starstar, Xoroshiro128StarStar::from_entropy());
-gen_bytes!(gen_bytes_xoroshiro128plus, Xoroshiro128Plus::from_entropy());
-gen_bytes!(gen_bytes_xoroshiro64starstar, Xoroshiro64StarStar::from_entropy());
-gen_bytes!(gen_bytes_xoroshiro64star, Xoroshiro64Star::from_entropy());
-gen_bytes!(gen_bytes_splitmix64, SplitMix64::from_entropy());
-gen_bytes!(gen_bytes_lcg64_xsh32, Lcg64Xsh32::from_entropy());
-gen_bytes!(gen_bytes_mcg128_xsh64, Mcg128Xsl64::from_entropy());
-gen_bytes!(gen_bytes_chacha20, ChaChaRng::from_entropy());
-gen_bytes!(gen_bytes_hc128, Hc128Rng::from_entropy());
-gen_bytes!(gen_bytes_isaac, IsaacRng::from_entropy());
-gen_bytes!(gen_bytes_isaac64, Isaac64Rng::from_entropy());
-gen_bytes!(gen_bytes_std, StdRng::from_entropy());
-gen_bytes!(gen_bytes_small, SmallRng::from_entropy());
-gen_bytes!(gen_bytes_os, OsRng::new().unwrap());
-
-macro_rules! gen_uint {
- ($fnn:ident, $ty:ty, $gen:expr) => {
- #[bench]
- fn $fnn(b: &mut Bencher) {
- let mut rng = $gen;
- b.iter(|| {
- let mut accum: $ty = 0;
- for _ in 0..RAND_BENCH_N {
- accum = accum.wrapping_add(rng.gen::<$ty>());
- }
- accum
- });
- b.bytes = size_of::<$ty>() as u64 * RAND_BENCH_N;
- }
- }
-}
-
-gen_uint!(gen_u32_xorshift, u32, XorShiftRng::from_entropy());
-gen_uint!(gen_u32_xoshiro256starstar, u32, Xoshiro256StarStar::from_entropy());
-gen_uint!(gen_u32_xoshiro256plus, u32, Xoshiro256Plus::from_entropy());
-gen_uint!(gen_u32_xoshiro128starstar, u32, Xoshiro128StarStar::from_entropy());
-gen_uint!(gen_u32_xoshiro128plus, u32, Xoshiro128Plus::from_entropy());
-gen_uint!(gen_u32_xoroshiro128starstar, u32, Xoroshiro128StarStar::from_entropy());
-gen_uint!(gen_u32_xoroshiro128plus, u32, Xoroshiro128Plus::from_entropy());
-gen_uint!(gen_u32_xoroshiro64starstar, u32, Xoroshiro64StarStar::from_entropy());
-gen_uint!(gen_u32_xoroshiro64star, u32, Xoroshiro64Star::from_entropy());
-gen_uint!(gen_u32_splitmix64, u32, SplitMix64::from_entropy());
-gen_uint!(gen_u32_lcg64_xsh32, u32, Lcg64Xsh32::from_entropy());
-gen_uint!(gen_u32_mcg128_xsh64, u32, Mcg128Xsl64::from_entropy());
-gen_uint!(gen_u32_chacha20, u32, ChaChaRng::from_entropy());
-gen_uint!(gen_u32_hc128, u32, Hc128Rng::from_entropy());
-gen_uint!(gen_u32_isaac, u32, IsaacRng::from_entropy());
-gen_uint!(gen_u32_isaac64, u32, Isaac64Rng::from_entropy());
-gen_uint!(gen_u32_std, u32, StdRng::from_entropy());
-gen_uint!(gen_u32_small, u32, SmallRng::from_entropy());
-gen_uint!(gen_u32_os, u32, OsRng::new().unwrap());
-
-gen_uint!(gen_u64_xorshift, u64, XorShiftRng::from_entropy());
-gen_uint!(gen_u64_xoshiro256starstar, u64, Xoshiro256StarStar::from_entropy());
-gen_uint!(gen_u64_xoshiro256plus, u64, Xoshiro256Plus::from_entropy());
-gen_uint!(gen_u64_xoshiro128starstar, u64, Xoshiro128StarStar::from_entropy());
-gen_uint!(gen_u64_xoshiro128plus, u64, Xoshiro128Plus::from_entropy());
-gen_uint!(gen_u64_xoroshiro128starstar, u64, Xoroshiro128StarStar::from_entropy());
-gen_uint!(gen_u64_xoroshiro128plus, u64, Xoroshiro128Plus::from_entropy());
-gen_uint!(gen_u64_xoroshiro64starstar, u64, Xoroshiro64StarStar::from_entropy());
-gen_uint!(gen_u64_xoroshiro64star, u64, Xoroshiro64Star::from_entropy());
-gen_uint!(gen_u64_splitmix64, u64, SplitMix64::from_entropy());
-gen_uint!(gen_u64_lcg64_xsh32, u64, Lcg64Xsh32::from_entropy());
-gen_uint!(gen_u64_mcg128_xsh64, u64, Mcg128Xsl64::from_entropy());
-gen_uint!(gen_u64_chacha20, u64, ChaChaRng::from_entropy());
-gen_uint!(gen_u64_hc128, u64, Hc128Rng::from_entropy());
-gen_uint!(gen_u64_isaac, u64, IsaacRng::from_entropy());
-gen_uint!(gen_u64_isaac64, u64, Isaac64Rng::from_entropy());
-gen_uint!(gen_u64_std, u64, StdRng::from_entropy());
-gen_uint!(gen_u64_small, u64, SmallRng::from_entropy());
-gen_uint!(gen_u64_os, u64, OsRng::new().unwrap());
-
-// Do not test JitterRng like the others by running it RAND_BENCH_N times per,
-// measurement, because it is way too slow. Only run it once.
-#[bench]
-fn gen_u64_jitter(b: &mut Bencher) {
- let mut rng = JitterRng::new().unwrap();
- b.iter(|| {
- rng.gen::<u64>()
- });
- b.bytes = size_of::<u64>() as u64;
-}
-
-macro_rules! init_gen {
- ($fnn:ident, $gen:ident) => {
- #[bench]
- fn $fnn(b: &mut Bencher) {
- let mut rng = XorShiftRng::from_entropy();
- b.iter(|| {
- let r2 = $gen::from_rng(&mut rng).unwrap();
- r2
- });
- }
- }
-}
-
-init_gen!(init_xorshift, XorShiftRng);
-init_gen!(init_xoshiro256starstar, Xoshiro256StarStar);
-init_gen!(init_xoshiro256plus, Xoshiro256Plus);
-init_gen!(init_xoshiro128starstar, Xoshiro128StarStar);
-init_gen!(init_xoshiro128plus, Xoshiro128Plus);
-init_gen!(init_xoroshiro128starstar, Xoroshiro128StarStar);
-init_gen!(init_xoroshiro128plus, Xoroshiro128Plus);
-init_gen!(init_xoroshiro64starstar, Xoroshiro64StarStar);
-init_gen!(init_xoroshiro64star, Xoroshiro64Star);
-init_gen!(init_splitmix64, SplitMix64);
-init_gen!(init_lcg64_xsh32, Lcg64Xsh32);
-init_gen!(init_mcg128_xsh64, Mcg128Xsl64);
-init_gen!(init_hc128, Hc128Rng);
-init_gen!(init_isaac, IsaacRng);
-init_gen!(init_isaac64, Isaac64Rng);
-init_gen!(init_chacha, ChaChaRng);
-
-#[bench]
-fn init_jitter(b: &mut Bencher) {
- b.iter(|| {
- JitterRng::new().unwrap()
- });
-}
-
-
-const RESEEDING_THRESHOLD: u64 = 1024*1024*1024; // something high enough to get
- // deterministic measurements
-
-#[bench]
-fn reseeding_hc128_bytes(b: &mut Bencher) {
- let mut rng = ReseedingRng::new(Hc128Core::from_entropy(),
- RESEEDING_THRESHOLD,
- EntropyRng::new());
- let mut buf = [0u8; BYTES_LEN];
- b.iter(|| {
- for _ in 0..RAND_BENCH_N {
- rng.fill_bytes(&mut buf);
- black_box(buf);
- }
- });
- b.bytes = BYTES_LEN as u64 * RAND_BENCH_N;
-}
-
-macro_rules! reseeding_uint {
- ($fnn:ident, $ty:ty) => {
- #[bench]
- fn $fnn(b: &mut Bencher) {
- let mut rng = ReseedingRng::new(Hc128Core::from_entropy(),
- RESEEDING_THRESHOLD,
- EntropyRng::new());
- b.iter(|| {
- let mut accum: $ty = 0;
- for _ in 0..RAND_BENCH_N {
- accum = accum.wrapping_add(rng.gen::<$ty>());
- }
- accum
- });
- b.bytes = size_of::<$ty>() as u64 * RAND_BENCH_N;
- }
- }
-}
-
-reseeding_uint!(reseeding_hc128_u32, u32);
-reseeding_uint!(reseeding_hc128_u64, u64);
-
-
-macro_rules! threadrng_uint {
- ($fnn:ident, $ty:ty) => {
- #[bench]
- fn $fnn(b: &mut Bencher) {
- let mut rng = thread_rng();
- b.iter(|| {
- let mut accum: $ty = 0;
- for _ in 0..RAND_BENCH_N {
- accum = accum.wrapping_add(rng.gen::<$ty>());
- }
- accum
- });
- b.bytes = size_of::<$ty>() as u64 * RAND_BENCH_N;
- }
- }
-}
-
-threadrng_uint!(thread_rng_u32, u32);
-threadrng_uint!(thread_rng_u64, u64);
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;
-}
diff --git a/rand/benches/seq.rs b/rand/benches/seq.rs
deleted file mode 100644
index 0ca3398..0000000
--- a/rand/benches/seq.rs
+++ /dev/null
@@ -1,174 +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)]
-#![allow(non_snake_case)]
-
-extern crate test;
-extern crate rand;
-
-use test::Bencher;
-
-use rand::prelude::*;
-use rand::seq::*;
-use std::mem::size_of;
-
-const RAND_BENCH_N: u64 = 1000;
-
-#[bench]
-fn seq_shuffle_100(b: &mut Bencher) {
- let mut rng = SmallRng::from_rng(thread_rng()).unwrap();
- let x : &mut [usize] = &mut [1; 100];
- b.iter(|| {
- x.shuffle(&mut rng);
- x[0]
- })
-}
-
-#[bench]
-fn seq_slice_choose_1_of_1000(b: &mut Bencher) {
- let mut rng = SmallRng::from_rng(thread_rng()).unwrap();
- let x : &mut [usize] = &mut [1; 1000];
- for i in 0..1000 {
- x[i] = i;
- }
- b.iter(|| {
- let mut s = 0;
- for _ in 0..RAND_BENCH_N {
- s += x.choose(&mut rng).unwrap();
- }
- s
- });
- b.bytes = size_of::<usize>() as u64 * ::RAND_BENCH_N;
-}
-
-macro_rules! seq_slice_choose_multiple {
- ($name:ident, $amount:expr, $length:expr) => {
- #[bench]
- fn $name(b: &mut Bencher) {
- let mut rng = SmallRng::from_rng(thread_rng()).unwrap();
- let x : &[i32] = &[$amount; $length];
- let mut result = [0i32; $amount];
- b.iter(|| {
- // Collect full result to prevent unwanted shortcuts getting
- // first element (in case sample_indices returns an iterator).
- for (slot, sample) in result.iter_mut().zip(
- x.choose_multiple(&mut rng, $amount)) {
- *slot = *sample;
- }
- result[$amount-1]
- })
- }
- }
-}
-
-seq_slice_choose_multiple!(seq_slice_choose_multiple_1_of_1000, 1, 1000);
-seq_slice_choose_multiple!(seq_slice_choose_multiple_950_of_1000, 950, 1000);
-seq_slice_choose_multiple!(seq_slice_choose_multiple_10_of_100, 10, 100);
-seq_slice_choose_multiple!(seq_slice_choose_multiple_90_of_100, 90, 100);
-
-#[bench]
-fn seq_iter_choose_from_1000(b: &mut Bencher) {
- let mut rng = SmallRng::from_rng(thread_rng()).unwrap();
- let x : &mut [usize] = &mut [1; 1000];
- for i in 0..1000 {
- x[i] = i;
- }
- b.iter(|| {
- let mut s = 0;
- for _ in 0..RAND_BENCH_N {
- s += x.iter().choose(&mut rng).unwrap();
- }
- s
- });
- b.bytes = size_of::<usize>() as u64 * ::RAND_BENCH_N;
-}
-
-#[derive(Clone)]
-struct UnhintedIterator<I: Iterator + Clone> {
- iter: I,
-}
-impl<I: Iterator + Clone> Iterator for UnhintedIterator<I> {
- type Item = I::Item;
- fn next(&mut self) -> Option<Self::Item> {
- self.iter.next()
- }
-}
-
-#[derive(Clone)]
-struct WindowHintedIterator<I: ExactSizeIterator + Iterator + Clone> {
- iter: I,
- window_size: usize,
-}
-impl<I: ExactSizeIterator + Iterator + Clone> Iterator for WindowHintedIterator<I> {
- type Item = I::Item;
- fn next(&mut self) -> Option<Self::Item> {
- self.iter.next()
- }
- fn size_hint(&self) -> (usize, Option<usize>) {
- (std::cmp::min(self.iter.len(), self.window_size), None)
- }
-}
-
-#[bench]
-fn seq_iter_unhinted_choose_from_1000(b: &mut Bencher) {
- let mut rng = SmallRng::from_rng(thread_rng()).unwrap();
- let x : &[usize] = &[1; 1000];
- b.iter(|| {
- UnhintedIterator { iter: x.iter() }.choose(&mut rng).unwrap()
- })
-}
-
-#[bench]
-fn seq_iter_window_hinted_choose_from_1000(b: &mut Bencher) {
- let mut rng = SmallRng::from_rng(thread_rng()).unwrap();
- let x : &[usize] = &[1; 1000];
- b.iter(|| {
- WindowHintedIterator { iter: x.iter(), window_size: 7 }.choose(&mut rng)
- })
-}
-
-#[bench]
-fn seq_iter_choose_multiple_10_of_100(b: &mut Bencher) {
- let mut rng = SmallRng::from_rng(thread_rng()).unwrap();
- let x : &[usize] = &[1; 100];
- b.iter(|| {
- x.iter().cloned().choose_multiple(&mut rng, 10)
- })
-}
-
-#[bench]
-fn seq_iter_choose_multiple_fill_10_of_100(b: &mut Bencher) {
- let mut rng = SmallRng::from_rng(thread_rng()).unwrap();
- let x : &[usize] = &[1; 100];
- let mut buf = [0; 10];
- b.iter(|| {
- x.iter().cloned().choose_multiple_fill(&mut rng, &mut buf)
- })
-}
-
-macro_rules! sample_indices {
- ($name:ident, $fn:ident, $amount:expr, $length:expr) => {
- #[bench]
- fn $name(b: &mut Bencher) {
- let mut rng = SmallRng::from_rng(thread_rng()).unwrap();
- b.iter(|| {
- index::$fn(&mut rng, $length, $amount)
- })
- }
- }
-}
-
-sample_indices!(misc_sample_indices_1_of_1k, sample, 1, 1000);
-sample_indices!(misc_sample_indices_10_of_1k, sample, 10, 1000);
-sample_indices!(misc_sample_indices_100_of_1k, sample, 100, 1000);
-sample_indices!(misc_sample_indices_100_of_1M, sample, 100, 1000_000);
-sample_indices!(misc_sample_indices_100_of_1G, sample, 100, 1000_000_000);
-sample_indices!(misc_sample_indices_200_of_1G, sample, 200, 1000_000_000);
-sample_indices!(misc_sample_indices_400_of_1G, sample, 400, 1000_000_000);
-sample_indices!(misc_sample_indices_600_of_1G, sample, 600, 1000_000_000);
generated by cgit v1.2.1 (git 2.18.0) at 2024-05-18 01:20:39 +0000