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Diffstat (limited to '')
-rw-r--r-- | vendor/ryu/benches/bench.rs | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/vendor/ryu/benches/bench.rs b/vendor/ryu/benches/bench.rs new file mode 100644 index 000000000..fbc1b7067 --- /dev/null +++ b/vendor/ryu/benches/bench.rs @@ -0,0 +1,62 @@ +// cargo bench + +#![feature(test)] +#![allow( + clippy::approx_constant, + clippy::excessive_precision, + clippy::unreadable_literal +)] + +extern crate test; + +use std::io::Write; +use std::{f32, f64}; +use test::{black_box, Bencher}; + +macro_rules! benches { + ($($name:ident($value:expr),)*) => { + mod bench_ryu { + use super::*; + $( + #[bench] + fn $name(b: &mut Bencher) { + let mut buf = ryu::Buffer::new(); + + b.iter(move || { + let value = black_box($value); + let formatted = buf.format_finite(value); + black_box(formatted); + }); + } + )* + } + + mod bench_std_fmt { + use super::*; + $( + #[bench] + fn $name(b: &mut Bencher) { + let mut buf = Vec::with_capacity(20); + + b.iter(|| { + buf.clear(); + let value = black_box($value); + write!(&mut buf, "{}", value).unwrap(); + black_box(buf.as_slice()); + }); + } + )* + } + }; +} + +benches! { + bench_0_f64(0f64), + bench_short_f64(0.1234f64), + bench_e_f64(2.718281828459045f64), + bench_max_f64(f64::MAX), + bench_0_f32(0f32), + bench_short_f32(0.1234f32), + bench_e_f32(2.718281828459045f32), + bench_max_f32(f32::MAX), +} |