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Commit 7704a39

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pascaldekloepascaldekloe
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fmt benchmarks for binary, octal and hex
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  • library/coretests/benches

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‎library/coretests/benches/fmt.rs‎

Lines changed: 180 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -162,3 +162,183 @@ fn write_u8_min(bh: &mut Bencher) {
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black_box(format!("{}", black_box(u8::MIN)));
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});
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}
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#[bench]
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fn write_i8_bin(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:b}", black_box(0_i8)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(100_i8)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(-100_i8)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(1_i8 << 4)).unwrap();
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black_box(&mut buf).clear();
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});
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}
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#[bench]
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fn write_i16_bin(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:b}", black_box(0_i16)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(100_i16)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(-100_i16)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(1_i16 << 8)).unwrap();
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black_box(&mut buf).clear();
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});
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}
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#[bench]
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fn write_i32_bin(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:b}", black_box(0_i32)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(100_i32)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(-100_i32)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(1_i32 << 16)).unwrap();
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black_box(&mut buf).clear();
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});
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}
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#[bench]
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fn write_i64_bin(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:b}", black_box(0_i64)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(100_i64)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(-100_i64)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(1_i64 << 32)).unwrap();
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black_box(&mut buf).clear();
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});
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}
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#[bench]
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fn write_i128_bin(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:b}", black_box(0_i128)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(100_i128)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(-100_i128)).unwrap();
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write!(black_box(&mut buf), "{:b}", black_box(1_i128 << 64)).unwrap();
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black_box(&mut buf).clear();
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});
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}
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#[bench]
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fn write_i8_oct(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:o}", black_box(0_i8)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(100_i8)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(-100_i8)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(1_i8 << 4)).unwrap();
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black_box(&mut buf).clear();
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});
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}
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#[bench]
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fn write_i16_oct(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:o}", black_box(0_i16)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(100_i16)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(-100_i16)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(1_i16 << 8)).unwrap();
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black_box(&mut buf).clear();
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});
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}
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#[bench]
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fn write_i32_oct(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:o}", black_box(0_i32)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(100_i32)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(-100_i32)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(1_i32 << 16)).unwrap();
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black_box(&mut buf).clear();
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});
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}
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#[bench]
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fn write_i64_oct(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:o}", black_box(0_i64)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(100_i64)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(-100_i64)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(1_i64 << 32)).unwrap();
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black_box(&mut buf).clear();
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});
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}
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#[bench]
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fn write_i128_oct(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:o}", black_box(0_i128)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(100_i128)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(-100_i128)).unwrap();
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write!(black_box(&mut buf), "{:o}", black_box(1_i128 << 64)).unwrap();
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black_box(&mut buf).clear();
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});
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}
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#[bench]
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fn write_i8_hex(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:x}", black_box(0_i8)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(100_i8)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(-100_i8)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(1_i8 << 4)).unwrap();
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black_box(&mut buf).clear();
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});
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}
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#[bench]
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fn write_i16_hex(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:x}", black_box(0_i16)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(100_i16)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(-100_i16)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(1_i16 << 8)).unwrap();
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black_box(&mut buf).clear();
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});
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}
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#[bench]
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fn write_i32_hex(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:x}", black_box(0_i32)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(100_i32)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(-100_i32)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(1_i32 << 16)).unwrap();
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black_box(&mut buf).clear();
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});
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}
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#[bench]
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fn write_i64_hex(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:x}", black_box(0_i64)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(100_i64)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(-100_i64)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(1_i64 << 32)).unwrap();
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black_box(&mut buf).clear();
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});
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}
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#[bench]
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fn write_i128_hex(bh: &mut Bencher) {
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let mut buf = String::with_capacity(256);
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bh.iter(|| {
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write!(black_box(&mut buf), "{:x}", black_box(0_i128)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(100_i128)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(-100_i128)).unwrap();
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write!(black_box(&mut buf), "{:x}", black_box(1_i128 << 64)).unwrap();
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black_box(&mut buf).clear();
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});
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}

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