From 7704a3968523e872dbda05e449cd6375e4520bad Mon Sep 17 00:00:00 2001 From: "Pascal S. de Kloe" Date: Sun, 29 Jun 2025 17:08:40 +0200 Subject: [PATCH] fmt benchmarks for binary, octal and hex --- library/coretests/benches/fmt.rs | 180 +++++++++++++++++++++++++++++++ 1 file changed, 180 insertions(+) diff --git a/library/coretests/benches/fmt.rs b/library/coretests/benches/fmt.rs index ee8e981b46b..f45b921b939 100644 --- a/library/coretests/benches/fmt.rs +++ b/library/coretests/benches/fmt.rs @@ -162,3 +162,183 @@ fn write_u8_min(bh: &mut Bencher) { black_box(format!("{}", black_box(u8::MIN))); }); } + +#[bench] +fn write_i8_bin(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:b}", black_box(0_i8)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(100_i8)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(-100_i8)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(1_i8 << 4)).unwrap(); + black_box(&mut buf).clear(); + }); +} + +#[bench] +fn write_i16_bin(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:b}", black_box(0_i16)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(100_i16)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(-100_i16)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(1_i16 << 8)).unwrap(); + black_box(&mut buf).clear(); + }); +} + +#[bench] +fn write_i32_bin(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:b}", black_box(0_i32)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(100_i32)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(-100_i32)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(1_i32 << 16)).unwrap(); + black_box(&mut buf).clear(); + }); +} + +#[bench] +fn write_i64_bin(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:b}", black_box(0_i64)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(100_i64)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(-100_i64)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(1_i64 << 32)).unwrap(); + black_box(&mut buf).clear(); + }); +} + +#[bench] +fn write_i128_bin(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:b}", black_box(0_i128)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(100_i128)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(-100_i128)).unwrap(); + write!(black_box(&mut buf), "{:b}", black_box(1_i128 << 64)).unwrap(); + black_box(&mut buf).clear(); + }); +} + +#[bench] +fn write_i8_oct(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:o}", black_box(0_i8)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(100_i8)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(-100_i8)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(1_i8 << 4)).unwrap(); + black_box(&mut buf).clear(); + }); +} + +#[bench] +fn write_i16_oct(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:o}", black_box(0_i16)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(100_i16)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(-100_i16)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(1_i16 << 8)).unwrap(); + black_box(&mut buf).clear(); + }); +} + +#[bench] +fn write_i32_oct(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:o}", black_box(0_i32)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(100_i32)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(-100_i32)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(1_i32 << 16)).unwrap(); + black_box(&mut buf).clear(); + }); +} + +#[bench] +fn write_i64_oct(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:o}", black_box(0_i64)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(100_i64)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(-100_i64)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(1_i64 << 32)).unwrap(); + black_box(&mut buf).clear(); + }); +} + +#[bench] +fn write_i128_oct(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:o}", black_box(0_i128)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(100_i128)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(-100_i128)).unwrap(); + write!(black_box(&mut buf), "{:o}", black_box(1_i128 << 64)).unwrap(); + black_box(&mut buf).clear(); + }); +} + +#[bench] +fn write_i8_hex(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:x}", black_box(0_i8)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(100_i8)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(-100_i8)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(1_i8 << 4)).unwrap(); + black_box(&mut buf).clear(); + }); +} + +#[bench] +fn write_i16_hex(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:x}", black_box(0_i16)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(100_i16)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(-100_i16)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(1_i16 << 8)).unwrap(); + black_box(&mut buf).clear(); + }); +} + +#[bench] +fn write_i32_hex(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:x}", black_box(0_i32)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(100_i32)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(-100_i32)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(1_i32 << 16)).unwrap(); + black_box(&mut buf).clear(); + }); +} + +#[bench] +fn write_i64_hex(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:x}", black_box(0_i64)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(100_i64)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(-100_i64)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(1_i64 << 32)).unwrap(); + black_box(&mut buf).clear(); + }); +} + +#[bench] +fn write_i128_hex(bh: &mut Bencher) { + let mut buf = String::with_capacity(256); + bh.iter(|| { + write!(black_box(&mut buf), "{:x}", black_box(0_i128)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(100_i128)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(-100_i128)).unwrap(); + write!(black_box(&mut buf), "{:x}", black_box(1_i128 << 64)).unwrap(); + black_box(&mut buf).clear(); + }); +}