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|
// 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),
}
|
