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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:18:25 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:18:25 +0000
commit5363f350887b1e5b5dd21a86f88c8af9d7fea6da (patch)
tree35ca005eb6e0e9a1ba3bb5dbc033209ad445dc17 /vendor/fastrand/benches/bench.rs
parentAdding debian version 1.66.0+dfsg1-1. (diff)
downloadrustc-5363f350887b1e5b5dd21a86f88c8af9d7fea6da.tar.xz
rustc-5363f350887b1e5b5dd21a86f88c8af9d7fea6da.zip
Merging upstream version 1.67.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/fastrand/benches/bench.rs')
-rw-r--r--vendor/fastrand/benches/bench.rs75
1 files changed, 75 insertions, 0 deletions
diff --git a/vendor/fastrand/benches/bench.rs b/vendor/fastrand/benches/bench.rs
new file mode 100644
index 000000000..53826ce5c
--- /dev/null
+++ b/vendor/fastrand/benches/bench.rs
@@ -0,0 +1,75 @@
+#![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 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 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 rng = fastrand::Rng::new();
+ b.iter(|| {
+ let mut sum = 0u32;
+ for _ in 0..10_000 {
+ sum = sum.wrapping_add(rng.u32(..));
+ }
+ sum
+ })
+}