1#![feature(test)]
2#![allow(non_snake_case)]
3#![allow(clippy::cast_lossless)]
4
5extern crate test;
6
7macro_rules! benches {
8 ($($name:ident($value:expr))*) => {
9 mod bench_itoa_format {
10 use test::{Bencher, black_box};
11
12 $(
13 #[bench]
14 fn $name(b: &mut Bencher) {
15 let mut buffer = itoa::Buffer::new();
16
17 b.iter(|| {
18 let printed = buffer.format(black_box($value));
19 black_box(printed);
20 });
21 }
22 )*
23 }
24
25 mod bench_std_fmt {
26 use std::io::Write;
27 use test::{Bencher, black_box};
28
29 $(
30 #[bench]
31 fn $name(b: &mut Bencher) {
32 let mut buf = Vec::with_capacity(40);
33
34 b.iter(|| {
35 buf.clear();
36 write!(&mut buf, "{}", black_box($value)).unwrap();
37 black_box(&buf);
38 });
39 }
40 )*
41 }
42 }
43}
44
45benches! {
46 bench_u64_0(0u64)
47 bench_u64_half(u32::max_value() as u64)
48 bench_u64_max(u64::max_value())
49
50 bench_i16_0(0i16)
51 bench_i16_min(i16::min_value())
52
53 bench_u128_0(0u128)
54 bench_u128_max(u128::max_value())
55}
56