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authorValentin Popov <valentin@popov.link>2024-01-08 00:21:28 +0300
committerValentin Popov <valentin@popov.link>2024-01-08 00:21:28 +0300
commit1b6a04ca5504955c571d1c97504fb45ea0befee4 (patch)
tree7579f518b23313e8a9748a88ab6173d5e030b227 /vendor/fastrand/benches/bench.rs
parent5ecd8cf2cba827454317368b68571df0d13d7842 (diff)
downloadfparkan-1b6a04ca5504955c571d1c97504fb45ea0befee4.tar.xz
fparkan-1b6a04ca5504955c571d1c97504fb45ea0befee4.zip
Initial vendor packages
Signed-off-by: Valentin Popov <valentin@popov.link>
Diffstat (limited to 'vendor/fastrand/benches/bench.rs')
-rw-r--r--vendor/fastrand/benches/bench.rs98
1 files changed, 98 insertions, 0 deletions
diff --git a/vendor/fastrand/benches/bench.rs b/vendor/fastrand/benches/bench.rs
new file mode 100644
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--- /dev/null
+++ b/vendor/fastrand/benches/bench.rs
@@ -0,0 +1,98 @@
+#![feature(test)]
+
+extern crate test;
+
+use rand::prelude::*;
+use test::Bencher;
+use wyhash::WyRng;
+
+#[bench]
+fn shuffle_wyhash(b: &mut Bencher) {
+ let mut rng = WyRng::from_rng(thread_rng()).unwrap();
+ let mut x = (0..100).collect::<Vec<usize>>();
+ b.iter(|| {
+ x.shuffle(&mut rng);
+ x[0]
+ })
+}
+
+#[bench]
+fn shuffle_fastrand(b: &mut Bencher) {
+ let mut rng = fastrand::Rng::new();
+ let mut x = (0..100).collect::<Vec<usize>>();
+ b.iter(|| {
+ rng.shuffle(&mut x);
+ x[0]
+ })
+}
+
+#[bench]
+fn u8_wyhash(b: &mut Bencher) {
+ let mut rng = WyRng::from_rng(thread_rng()).unwrap();
+ b.iter(|| {
+ let mut sum = 0u8;
+ for _ in 0..10_000 {
+ sum = sum.wrapping_add(rng.gen::<u8>());
+ }
+ sum
+ })
+}
+
+#[bench]
+fn u8_fastrand(b: &mut Bencher) {
+ let mut rng = fastrand::Rng::new();
+ b.iter(|| {
+ let mut sum = 0u8;
+ for _ in 0..10_000 {
+ sum = sum.wrapping_add(rng.u8(..));
+ }
+ sum
+ })
+}
+
+#[bench]
+fn u32_wyhash(b: &mut Bencher) {
+ let mut rng = WyRng::from_rng(thread_rng()).unwrap();
+ b.iter(|| {
+ let mut sum = 0u32;
+ for _ in 0..10_000 {
+ sum = sum.wrapping_add(rng.gen::<u32>());
+ }
+ sum
+ })
+}
+
+#[bench]
+fn u32_fastrand(b: &mut Bencher) {
+ let mut rng = fastrand::Rng::new();
+ b.iter(|| {
+ let mut sum = 0u32;
+ for _ in 0..10_000 {
+ sum = sum.wrapping_add(rng.u32(..));
+ }
+ sum
+ })
+}
+
+#[bench]
+fn fill(b: &mut Bencher) {
+ let mut rng = fastrand::Rng::new();
+ b.iter(|| {
+ // Pick a size that isn't divisble by 8.
+ let mut bytes = [0u8; 367];
+ rng.fill(&mut bytes);
+ bytes
+ })
+}
+
+#[bench]
+fn fill_naive(b: &mut Bencher) {
+ let mut rng = fastrand::Rng::new();
+ b.iter(|| {
+ let mut bytes = [0u8; 367];
+ for item in &mut bytes {
+ *item = rng.u8(..);
+ }
+ bytes
+ })
+}