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base repository: DaniPopes/const-hex
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base: v1.11.3
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head repository: DaniPopes/const-hex
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compare: v1.12.0
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  • 5 commits
  • 11 files changed
  • 3 contributors

Commits on Mar 13, 2024

  1. test: check empty strings

    @DaniPopes
    DaniPopes committed Mar 13, 2024
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Commits on May 15, 2024

  1. Derive Eq trait for FromHexError (#9) 

    Without this we cannot derive Eq on enums & structs that contain a
FromHexError. It is trivial to derive since all the elements of
FromHexError implement Eq already

Co-authored-by: James MacAdie (TT sandbox) <[email protected]>
    @jmacadie
    jmacadie and James MacAdie (TT sandbox) authored May 15, 2024
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  2. chore: Release const-hex version 1.11.4

    @DaniPopes
    DaniPopes committed May 15, 2024
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Commits on May 27, 2024

  1. feat: implement check for arm and portable-simd (#10)

    @DaniPopes
    DaniPopes authored May 27, 2024
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  2. chore: Release const-hex version 1.12.0

    @DaniPopes
    DaniPopes committed May 27, 2024
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Showing with 253 additions and 146 deletions.
  1. +4 −6 .github/workflows/ci.yml
  2. +1 −1 Cargo.toml
  3. +108 −89 README.md
  4. +44 −0 benches/bench/main.rs
  5. +40 −2 src/arch/aarch64.rs
  6. +5 −6 src/arch/generic.rs
  7. +22 −8 src/arch/portable_simd.rs
  8. +24 −32 src/arch/x86.rs
  9. +1 −1 src/error.rs
  10. +1 −1 src/lib.rs
  11. +3 −0 tests/test.rs
10 changes: 4 additions & 6 deletions .github/workflows/ci.yml
View file
Original file line number Diff line number Diff line change
@@ -40,11 +40,11 @@ jobs:
- uses: Swatinem/rust-cache@v2

- run: cargo build
- run: cargo test
- run: cargo build --no-default-features
- run: cargo test --tests --no-default-features
- run: cargo test --tests --no-default-features --features force-generic
- run: cargo test --tests --no-default-features --features nightly,portable-simd
- run: cargo test
- run: cargo test --no-default-features
- run: cargo test --no-default-features --features force-generic
- run: cargo test --no-default-features --features nightly,portable-simd
if: matrix.rust == 'nightly'
- run: cargo bench --no-run
if: matrix.rust == 'nightly'
@@ -65,8 +65,6 @@ jobs:
- uses: dtolnay/rust-toolchain@miri
with:
target: ${{ matrix.target }}
- uses: Swatinem/rust-cache@v2
- run: cargo miri setup --target ${{ matrix.target }} ${{ matrix.flags }}
- run: cargo miri test --target ${{ matrix.target }} ${{ matrix.flags }}

fuzz:
2 changes: 1 addition & 1 deletion Cargo.toml
View file
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
[package]
name = "const-hex"
version = "1.11.3"
version = "1.12.0"
authors = ["DaniPopes <57450786+DaniPopes@users.noreply.github.com>"]
description = "Fast byte array to hex string conversion"
edition = "2021"
197 changes: 108 additions & 89 deletions README.md
View file
Original file line number Diff line number Diff line change
@@ -27,100 +27,119 @@ This crate is 10 to 50 times faster than [`hex`] in encoding and decoding, and
100+ times faster than `libstd` in formatting.

The following benchmarks were ran on an AMD Ryzen 9 7950X, compiled with
`1.78.0-nightly (a4472498d 2024-02-15)` on `x86_64-unknown-linux-gnu`.
`1.80.0-nightly (bdbbb6c6a 2024-05-26)` on `x86_64-unknown-linux-gnu`.

You can run these benchmarks with `cargo bench --features std` on a nightly
compiler.

```log
test decode::const_hex::bench1_32b ... bench: 16 ns/iter (+/- 5)
test decode::const_hex::bench2_256b ... bench: 37 ns/iter (+/- 0)
test decode::const_hex::bench3_2k ... bench: 232 ns/iter (+/- 2)
test decode::const_hex::bench4_16k ... bench: 1,672 ns/iter (+/- 12)
test decode::const_hex::bench5_128k ... bench: 12,979 ns/iter (+/- 91)
test decode::const_hex::bench6_1m ... bench: 104,751 ns/iter (+/- 2,068)
test decode::faster_hex::bench1_32b ... bench: 15 ns/iter (+/- 0)
test decode::faster_hex::bench2_256b ... bench: 54 ns/iter (+/- 1)
test decode::faster_hex::bench3_2k ... bench: 253 ns/iter (+/- 3)
test decode::faster_hex::bench4_16k ... bench: 1,831 ns/iter (+/- 20)
test decode::faster_hex::bench5_128k ... bench: 14,120 ns/iter (+/- 57)
test decode::faster_hex::bench6_1m ... bench: 115,291 ns/iter (+/- 1,325)
test decode::hex::bench1_32b ... bench: 104 ns/iter (+/- 1)
test decode::hex::bench2_256b ... bench: 697 ns/iter (+/- 7)
test decode::hex::bench3_2k ... bench: 5,189 ns/iter (+/- 86)
test decode::hex::bench4_16k ... bench: 42,355 ns/iter (+/- 21,853)
test decode::hex::bench5_128k ... bench: 765,278 ns/iter (+/- 4,091)
test decode::hex::bench6_1m ... bench: 6,161,416 ns/iter (+/- 64,954)
test decode_to_slice::const_hex::bench1_32b ... bench: 5 ns/iter (+/- 0)
test decode_to_slice::const_hex::bench2_256b ... bench: 26 ns/iter (+/- 0)
test decode_to_slice::const_hex::bench3_2k ... bench: 210 ns/iter (+/- 10)
test decode_to_slice::const_hex::bench4_16k ... bench: 1,667 ns/iter (+/- 13)
test decode_to_slice::const_hex::bench5_128k ... bench: 13,043 ns/iter (+/- 19)
test decode_to_slice::const_hex::bench6_1m ... bench: 105,883 ns/iter (+/- 1,427)
test decode_to_slice::faster_hex::bench1_32b ... bench: 6 ns/iter (+/- 0)
test decode_to_slice::faster_hex::bench2_256b ... bench: 28 ns/iter (+/- 0)
test decode_to_slice::faster_hex::bench3_2k ... bench: 214 ns/iter (+/- 2)
test decode_to_slice::faster_hex::bench4_16k ... bench: 1,710 ns/iter (+/- 6)
test decode_to_slice::faster_hex::bench5_128k ... bench: 13,304 ns/iter (+/- 37)
test decode_to_slice::faster_hex::bench6_1m ... bench: 110,276 ns/iter (+/- 3,475)
test decode_to_slice::hex::bench1_32b ... bench: 38 ns/iter (+/- 2)
test decode_to_slice::hex::bench2_256b ... bench: 300 ns/iter (+/- 185)
test decode_to_slice::hex::bench3_2k ... bench: 2,717 ns/iter (+/- 64)
test decode_to_slice::hex::bench4_16k ... bench: 19,257 ns/iter (+/- 530)
test decode_to_slice::hex::bench5_128k ... bench: 624,172 ns/iter (+/- 15,725)
test decode_to_slice::hex::bench6_1m ... bench: 5,333,915 ns/iter (+/- 298,093)
test encode::const_hex::bench1_32b ... bench: 6 ns/iter (+/- 0)
test encode::const_hex::bench2_256b ... bench: 10 ns/iter (+/- 0)
test encode::const_hex::bench3_2k ... bench: 72 ns/iter (+/- 1)
test encode::const_hex::bench4_16k ... bench: 462 ns/iter (+/- 4)
test encode::const_hex::bench5_128k ... bench: 3,600 ns/iter (+/- 28)
test encode::const_hex::bench6_1m ... bench: 29,447 ns/iter (+/- 858)
test encode::faster_hex::bench1_32b ... bench: 17 ns/iter (+/- 0)
test encode::faster_hex::bench2_256b ... bench: 37 ns/iter (+/- 3)
test encode::faster_hex::bench3_2k ... bench: 102 ns/iter (+/- 1)
test encode::faster_hex::bench4_16k ... bench: 614 ns/iter (+/- 6)
test encode::faster_hex::bench5_128k ... bench: 4,764 ns/iter (+/- 12)
test encode::faster_hex::bench6_1m ... bench: 40,894 ns/iter (+/- 1,223)
test encode::hex::bench1_32b ... bench: 112 ns/iter (+/- 0)
test encode::hex::bench2_256b ... bench: 812 ns/iter (+/- 5)
test encode::hex::bench3_2k ... bench: 6,404 ns/iter (+/- 26)
test encode::hex::bench4_16k ... bench: 51,039 ns/iter (+/- 595)
test encode::hex::bench5_128k ... bench: 408,378 ns/iter (+/- 23,022)
test encode::hex::bench6_1m ... bench: 3,571,916 ns/iter (+/- 142,828)
test encode_to_slice::const_hex::bench1_32b ... bench: 1 ns/iter (+/- 0)
test encode_to_slice::const_hex::bench2_256b ... bench: 6 ns/iter (+/- 0)
test encode_to_slice::const_hex::bench3_2k ... bench: 53 ns/iter (+/- 0)
test encode_to_slice::const_hex::bench4_16k ... bench: 452 ns/iter (+/- 3)
test encode_to_slice::const_hex::bench5_128k ... bench: 3,550 ns/iter (+/- 10)
test encode_to_slice::const_hex::bench6_1m ... bench: 29,605 ns/iter (+/- 916)
test encode_to_slice::faster_hex::bench1_32b ... bench: 4 ns/iter (+/- 0)
test encode_to_slice::faster_hex::bench2_256b ... bench: 7 ns/iter (+/- 0)
test encode_to_slice::faster_hex::bench3_2k ... bench: 47 ns/iter (+/- 0)
test encode_to_slice::faster_hex::bench4_16k ... bench: 402 ns/iter (+/- 5)
test encode_to_slice::faster_hex::bench5_128k ... bench: 3,121 ns/iter (+/- 25)
test encode_to_slice::faster_hex::bench6_1m ... bench: 26,171 ns/iter (+/- 573)
test encode_to_slice::hex::bench1_32b ... bench: 11 ns/iter (+/- 0)
test encode_to_slice::hex::bench2_256b ... bench: 118 ns/iter (+/- 0)
test encode_to_slice::hex::bench3_2k ... bench: 994 ns/iter (+/- 4)
test encode_to_slice::hex::bench4_16k ... bench: 8,065 ns/iter (+/- 31)
test encode_to_slice::hex::bench5_128k ... bench: 63,982 ns/iter (+/- 2,026)
test encode_to_slice::hex::bench6_1m ... bench: 515,171 ns/iter (+/- 2,789)
test format::const_hex::bench1_32b ... bench: 9 ns/iter (+/- 0)
test format::const_hex::bench2_256b ... bench: 18 ns/iter (+/- 0)
test format::const_hex::bench3_2k ... bench: 119 ns/iter (+/- 1)
test format::const_hex::bench4_16k ... bench: 1,157 ns/iter (+/- 3)
test format::const_hex::bench5_128k ... bench: 9,560 ns/iter (+/- 443)
test format::const_hex::bench6_1m ... bench: 85,479 ns/iter (+/- 1,498)
test format::std::bench1_32b ... bench: 374 ns/iter (+/- 6)
test format::std::bench2_256b ... bench: 2,952 ns/iter (+/- 10)
test format::std::bench3_2k ... bench: 23,767 ns/iter (+/- 61)
test format::std::bench4_16k ... bench: 183,579 ns/iter (+/- 2,078)
test format::std::bench5_128k ... bench: 1,498,391 ns/iter (+/- 8,445)
test format::std::bench6_1m ... bench: 11,965,082 ns/iter (+/- 43,784)
test check::const_hex::bench1_32b ... bench: 9.79 ns/iter (+/- 2.22)
test check::const_hex::bench2_256b ... bench: 20.22 ns/iter (+/- 6.41)
test check::const_hex::bench3_2k ... bench: 124.57 ns/iter (+/- 9.68)
test check::const_hex::bench4_16k ... bench: 927.53 ns/iter (+/- 81.94)
test check::const_hex::bench5_128k ... bench: 7,300.16 ns/iter (+/- 153.57)
test check::const_hex::bench6_1m ... bench: 59,886.62 ns/iter (+/- 1,312.15)
test check::faster_hex::bench1_32b ... bench: 2.93 ns/iter (+/- 0.20)
test check::faster_hex::bench2_256b ... bench: 15.54 ns/iter (+/- 0.77)
test check::faster_hex::bench3_2k ... bench: 121.17 ns/iter (+/- 0.70)
test check::faster_hex::bench4_16k ... bench: 945.17 ns/iter (+/- 12.48)
test check::faster_hex::bench5_128k ... bench: 7,632.07 ns/iter (+/- 172.68)
test check::faster_hex::bench6_1m ... bench: 61,427.03 ns/iter (+/- 732.21)
test check::naive::bench1_32b ... bench: 26.15 ns/iter (+/- 1.04)
test check::naive::bench2_256b ... bench: 225.69 ns/iter (+/- 9.02)
test check::naive::bench3_2k ... bench: 1,952.05 ns/iter (+/- 20.46)
test check::naive::bench4_16k ... bench: 20,329.63 ns/iter (+/- 455.31)
test check::naive::bench5_128k ... bench: 503,460.10 ns/iter (+/- 8,930.00)
test check::naive::bench6_1m ... bench: 4,252,331.00 ns/iter (+/- 191,519.79)
test decode::const_hex::bench1_32b ... bench: 19.49 ns/iter (+/- 0.82)
test decode::const_hex::bench2_256b ... bench: 41.47 ns/iter (+/- 1.45)
test decode::const_hex::bench3_2k ... bench: 236.69 ns/iter (+/- 2.75)
test decode::const_hex::bench4_16k ... bench: 1,682.25 ns/iter (+/- 18.07)
test decode::const_hex::bench5_128k ... bench: 13,096.94 ns/iter (+/- 138.05)
test decode::const_hex::bench6_1m ... bench: 105,360.67 ns/iter (+/- 2,771.85)
test decode::faster_hex::bench1_32b ... bench: 16.49 ns/iter (+/- 0.12)
test decode::faster_hex::bench2_256b ... bench: 54.92 ns/iter (+/- 1.74)
test decode::faster_hex::bench3_2k ... bench: 246.11 ns/iter (+/- 3.25)
test decode::faster_hex::bench4_16k ... bench: 1,839.88 ns/iter (+/- 22.36)
test decode::faster_hex::bench5_128k ... bench: 14,376.52 ns/iter (+/- 203.97)
test decode::faster_hex::bench6_1m ... bench: 116,345.50 ns/iter (+/- 1,377.06)
test decode::hex::bench1_32b ... bench: 101.38 ns/iter (+/- 3.41)
test decode::hex::bench2_256b ... bench: 655.85 ns/iter (+/- 17.69)
test decode::hex::bench3_2k ... bench: 4,830.90 ns/iter (+/- 73.58)
test decode::hex::bench4_16k ... bench: 37,976.46 ns/iter (+/- 443.65)
test decode::hex::bench5_128k ... bench: 734,983.30 ns/iter (+/- 4,297.49)
test decode::hex::bench6_1m ... bench: 5,901,860.30 ns/iter (+/- 22,806.40)
test decode_to_slice::const_hex::bench1_32b ... bench: 11.03 ns/iter (+/- 0.50)
test decode_to_slice::const_hex::bench2_256b ... bench: 28.93 ns/iter (+/- 1.38)
test decode_to_slice::const_hex::bench3_2k ... bench: 210.49 ns/iter (+/- 5.65)
test decode_to_slice::const_hex::bench4_16k ... bench: 1,670.55 ns/iter (+/- 17.87)
test decode_to_slice::const_hex::bench5_128k ... bench: 13,094.65 ns/iter (+/- 115.89)
test decode_to_slice::const_hex::bench6_1m ... bench: 105,036.12 ns/iter (+/- 1,722.56)
test decode_to_slice::faster_hex::bench1_32b ... bench: 6.26 ns/iter (+/- 0.10)
test decode_to_slice::faster_hex::bench2_256b ... bench: 28.73 ns/iter (+/- 0.55)
test decode_to_slice::faster_hex::bench3_2k ... bench: 213.70 ns/iter (+/- 2.83)
test decode_to_slice::faster_hex::bench4_16k ... bench: 1,718.21 ns/iter (+/- 23.97)
test decode_to_slice::faster_hex::bench5_128k ... bench: 13,530.96 ns/iter (+/- 97.41)
test decode_to_slice::faster_hex::bench6_1m ... bench: 107,708.79 ns/iter (+/- 1,425.58)
test decode_to_slice::hex::bench1_32b ... bench: 39.07 ns/iter (+/- 1.85)
test decode_to_slice::hex::bench2_256b ... bench: 311.73 ns/iter (+/- 10.92)
test decode_to_slice::hex::bench3_2k ... bench: 2,515.69 ns/iter (+/- 63.09)
test decode_to_slice::hex::bench4_16k ... bench: 20,899.92 ns/iter (+/- 442.95)
test decode_to_slice::hex::bench5_128k ... bench: 634,859.00 ns/iter (+/- 6,609.09)
test decode_to_slice::hex::bench6_1m ... bench: 5,338,354.20 ns/iter (+/- 51,493.30)
test encode::const_hex::bench1_32b ... bench: 6.92 ns/iter (+/- 0.11)
test encode::const_hex::bench2_256b ... bench: 11.41 ns/iter (+/- 0.14)
test encode::const_hex::bench3_2k ... bench: 73.59 ns/iter (+/- 1.52)
test encode::const_hex::bench4_16k ... bench: 461.00 ns/iter (+/- 5.17)
test encode::const_hex::bench5_128k ... bench: 3,527.28 ns/iter (+/- 46.86)
test encode::const_hex::bench6_1m ... bench: 29,402.78 ns/iter (+/- 1,032.91)
test encode::faster_hex::bench1_32b ... bench: 17.30 ns/iter (+/- 0.30)
test encode::faster_hex::bench2_256b ... bench: 39.07 ns/iter (+/- 0.73)
test encode::faster_hex::bench3_2k ... bench: 102.93 ns/iter (+/- 1.92)
test encode::faster_hex::bench4_16k ... bench: 651.65 ns/iter (+/- 1.55)
test encode::faster_hex::bench5_128k ... bench: 5,074.50 ns/iter (+/- 22.97)
test encode::faster_hex::bench6_1m ... bench: 46,227.11 ns/iter (+/- 945.52)
test encode::hex::bench1_32b ... bench: 100.46 ns/iter (+/- 0.93)
test encode::hex::bench2_256b ... bench: 717.75 ns/iter (+/- 5.91)
test encode::hex::bench3_2k ... bench: 5,660.67 ns/iter (+/- 246.73)
test encode::hex::bench4_16k ... bench: 44,981.79 ns/iter (+/- 340.51)
test encode::hex::bench5_128k ... bench: 359,401.72 ns/iter (+/- 1,689.97)
test encode::hex::bench6_1m ... bench: 2,966,947.20 ns/iter (+/- 165,738.51)
test encode_to_slice::const_hex::bench1_32b ... bench: 1.55 ns/iter (+/- 0.04)
test encode_to_slice::const_hex::bench2_256b ... bench: 6.73 ns/iter (+/- 0.08)
test encode_to_slice::const_hex::bench3_2k ... bench: 54.23 ns/iter (+/- 2.06)
test encode_to_slice::const_hex::bench4_16k ... bench: 471.90 ns/iter (+/- 21.13)
test encode_to_slice::const_hex::bench5_128k ... bench: 3,730.44 ns/iter (+/- 113.80)
test encode_to_slice::const_hex::bench6_1m ... bench: 29,247.93 ns/iter (+/- 926.38)
test encode_to_slice::faster_hex::bench1_32b ... bench: 3.95 ns/iter (+/- 0.26)
test encode_to_slice::faster_hex::bench2_256b ... bench: 7.49 ns/iter (+/- 0.47)
test encode_to_slice::faster_hex::bench3_2k ... bench: 48.56 ns/iter (+/- 1.95)
test encode_to_slice::faster_hex::bench4_16k ... bench: 424.65 ns/iter (+/- 11.39)
test encode_to_slice::faster_hex::bench5_128k ... bench: 3,317.47 ns/iter (+/- 103.44)
test encode_to_slice::faster_hex::bench6_1m ... bench: 26,079.18 ns/iter (+/- 889.52)
test encode_to_slice::hex::bench1_32b ... bench: 11.99 ns/iter (+/- 0.30)
test encode_to_slice::hex::bench2_256b ... bench: 119.07 ns/iter (+/- 2.85)
test encode_to_slice::hex::bench3_2k ... bench: 999.68 ns/iter (+/- 26.35)
test encode_to_slice::hex::bench4_16k ... bench: 8,049.82 ns/iter (+/- 105.51)
test encode_to_slice::hex::bench5_128k ... bench: 65,186.25 ns/iter (+/- 758.98)
test encode_to_slice::hex::bench6_1m ... bench: 511,447.00 ns/iter (+/- 4,866.41)
test format::const_hex::bench1_32b ... bench: 9.84 ns/iter (+/- 0.21)
test format::const_hex::bench2_256b ... bench: 17.90 ns/iter (+/- 0.55)
test format::const_hex::bench3_2k ... bench: 119.47 ns/iter (+/- 3.87)
test format::const_hex::bench4_16k ... bench: 1,161.94 ns/iter (+/- 20.11)
test format::const_hex::bench5_128k ... bench: 9,580.23 ns/iter (+/- 188.10)
test format::const_hex::bench6_1m ... bench: 84,316.47 ns/iter (+/- 1,407.10)
test format::std::bench1_32b ... bench: 371.37 ns/iter (+/- 3.63)
test format::std::bench2_256b ... bench: 2,987.01 ns/iter (+/- 41.26)
test format::std::bench3_2k ... bench: 23,989.24 ns/iter (+/- 373.84)
test format::std::bench4_16k ... bench: 192,881.92 ns/iter (+/- 9,266.64)
test format::std::bench5_128k ... bench: 1,554,062.80 ns/iter (+/- 10,998.30)
test format::std::bench6_1m ... bench: 12,378,548.00 ns/iter (+/- 247,626.30)
```

## Acknowledgements
44 changes: 44 additions & 0 deletions benches/bench/main.rs
View file
Original file line number Diff line number Diff line change
@@ -29,6 +29,50 @@ impl<const N: usize> fmt::Display for StdFormat<N> {

macro_rules! benches {
($($name:ident($enc:expr, $dec:expr))*) => {
mod check {
use super::*;

mod const_hex {
use super::*;

$(
#[bench]
fn $name(b: &mut Bencher) {
b.iter(|| {
::const_hex::check(black_box($dec))
});
}
)*
}

mod faster_hex {
use super::*;

$(
#[bench]
fn $name(b: &mut Bencher) {
b.iter(|| {
::faster_hex::hex_check(black_box($dec.as_bytes()))
});
}
)*
}

mod naive {
use super::*;

$(
#[bench]
fn $name(b: &mut Bencher) {
b.iter(|| {
let dec = black_box($dec.as_bytes());
dec.iter().all(u8::is_ascii_hexdigit)
});
}
)*
}
}

#[cfg(feature = "alloc")]
mod decode {
use super::*;
Loading