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fmt benchmarks for binary, octal and hex

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This commit is contained in:
Pascal S. de Kloe 2025-06-29 17:08:40 +02:00
parent c6ac515a2b
commit 7704a39685
1 changed files with 180 additions and 0 deletions
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180
library/coretests/benches/fmt.rs
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@ -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();
});
}