63 lines
1.5 KiB
Rust
63 lines
1.5 KiB
Rust
// cargo bench
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#![feature(test)]
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#![allow(
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clippy::approx_constant,
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clippy::excessive_precision,
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clippy::unreadable_literal
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)]
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extern crate test;
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use std::io::Write;
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use std::{f32, f64};
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use test::{black_box, Bencher};
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macro_rules! benches {
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($($name:ident($value:expr),)*) => {
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mod bench_ryu {
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use super::*;
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$(
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#[bench]
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fn $name(b: &mut Bencher) {
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let mut buf = ryu::Buffer::new();
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b.iter(move || {
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let value = black_box($value);
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let formatted = buf.format_finite(value);
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black_box(formatted);
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});
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}
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)*
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}
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mod bench_std_fmt {
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use super::*;
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$(
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#[bench]
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fn $name(b: &mut Bencher) {
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let mut buf = Vec::with_capacity(20);
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b.iter(|| {
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buf.clear();
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let value = black_box($value);
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write!(&mut buf, "{}", value).unwrap();
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black_box(buf.as_slice());
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});
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}
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)*
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}
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};
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}
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benches! {
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bench_0_f64(0f64),
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bench_short_f64(0.1234f64),
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bench_e_f64(2.718281828459045f64),
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bench_max_f64(f64::MAX),
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bench_0_f32(0f32),
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bench_short_f32(0.1234f32),
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bench_e_f32(2.718281828459045f32),
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bench_max_f32(f32::MAX),
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}
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