summaryrefslogtreecommitdiffstats
path: root/third_party/rust/dtoa/benches/bench.rs
diff options
context:
space:
mode:
Diffstat (limited to 'third_party/rust/dtoa/benches/bench.rs')
-rw-r--r--third_party/rust/dtoa/benches/bench.rs54
1 files changed, 54 insertions, 0 deletions
diff --git a/third_party/rust/dtoa/benches/bench.rs b/third_party/rust/dtoa/benches/bench.rs
new file mode 100644
index 0000000000..ec57953563
--- /dev/null
+++ b/third_party/rust/dtoa/benches/bench.rs
@@ -0,0 +1,54 @@
+#![feature(test)]
+
+extern crate dtoa;
+extern crate test;
+
+macro_rules! benches {
+ ($($name:ident($value:expr),)*) => {
+ mod bench_dtoa {
+ use test::{Bencher, black_box};
+ $(
+ #[bench]
+ fn $name(b: &mut Bencher) {
+ use dtoa;
+
+ let mut buf = Vec::with_capacity(20);
+
+ b.iter(|| {
+ buf.clear();
+ dtoa::write(&mut buf, black_box($value)).unwrap()
+ });
+ }
+ )*
+ }
+
+ mod bench_fmt {
+ use test::{Bencher, black_box};
+ $(
+ #[bench]
+ fn $name(b: &mut Bencher) {
+ use std::io::Write;
+
+ let mut buf = Vec::with_capacity(20);
+
+ b.iter(|| {
+ buf.clear();
+ write!(&mut buf, "{}", black_box($value)).unwrap()
+ });
+ }
+ )*
+ }
+ }
+}
+
+benches!(
+ bench_0_f64(0f64),
+ bench_short_f64(0.1234f64),
+ bench_e_f64(2.718281828459045f64),
+ bench_max_f64(::std::f64::MAX),
+
+ bench_0_f32(0f32),
+ bench_short_f32(0.1234f32),
+ bench_e_f32(2.718281828459045f32),
+ bench_max_f32(::std::f32::MAX),
+);