gecko-dev/third_party/rust/itoa/benches/bench.rs

53 строки
1.2 KiB
Rust

#![feature(test)]
#![allow(non_snake_case)]
extern crate itoa;
extern crate test;
macro_rules! benches {
($($name:ident($value:expr),)*) => {
mod bench_itoa {
use test::{Bencher, black_box};
$(
#[bench]
fn $name(b: &mut Bencher) {
use itoa;
let mut buf = Vec::with_capacity(20);
b.iter(|| {
buf.clear();
itoa::write(&mut buf, black_box($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_0u64(0u64),
bench_HALFu64(<u32>::max_value() as u64),
bench_MAXu64(<u64>::max_value()),
bench_0i16(0i16),
bench_MINi16(<i16>::min_value()),
);