5 releases
| 0.1.1 | Oct 25, 2024 |
|---|---|
| 0.1.0 | Oct 25, 2024 |
| 0.1.0-absolut0 | Oct 23, 2024 |
#256 in Science
22 downloads per month
25KB
470 lines
codex-percent
no_std friendly percent en-de-coding for the 1%
Usage
Fixed Array
This uses fixed bytearray as output where you are responsible of ensuring large enough output size.
With FixedEncoder
cargo add codex-percent --no-default-features --features fixed,encode
With FixedDecoder
cargo add codex-percent --no-default-features --features fixed,decode
Allocating Vec
This uses allocating vec as output where you provide a mutable Vec that will re-allocate if needed.
With VecEncoder (uses alloc::vec)
cargo add codex-percent --no-default-features --features vec,encode
With VecDecoder (uses alloc::vec)
cargo add codex-percent --no-default-features --features vec,decode
See examples.
Decoder Benchmarks
In MacBook 13" M1 comparitative results:
| Type | Scenario | Perf |
|---|---|---|
| FixedDecoder | Poop-U1-4B | [16.897 ns 16.928 ns 16.969 ns] |
| FixedDecoder | Poop-U3-12B | [38.939 ns 39.021 ns 39.113 ns] |
| FixedDecoder | Poop-U6-24B | [73.677 ns 73.746 ns 73.830 ns] |
| VecDecoder | Poop-U6-24B straightline | [149.90 ns 151.21 ns 152.46 ns] |
| VecDecoder | Poop-U6-24B capped, re-use | [83.460 ns 83.646 ns 83.889 ns] |
Encoder Benchmarks
In MacBook 13" M1 comparitative results:
| Type | Scenario | Perf |
|---|---|---|
| FixedEncoder | Poop-U1-3B >> 12B | [8.7721 ns 8.7840 ns 8.7991 ns] |
| FixedEncoder | Poop-U3-9B >> 36B | [18.073 ns 18.149 ns 18.228 ns] |
| FixedEncoder | Poop-U6-18B >> 72B | [29.173 ns 29.267 ns 29.375 ns] |
| VecEncoder | no-init-cap Poop-U1-3B >> 12B | [42.965 ns 43.090 ns 43.221 ns] |
| VecEncoder | no-init-cap Poop-U3-9B >> 36B | [112.44 ns 112.84 ns 113.36 ns] |
| VecEncoder | no-init-cap Poop-U6-18B >> 72B | [153.92 ns 154.25 ns 154.59 ns] |
| VecEncoder | capped Poop-U1-3B >> 12B | [24.478 ns 24.507 ns 24.535 ns] |
| VecEncoder | capped Poop-U3-9B >> 36B | [37.446 ns 37.578 ns 37.724 ns] |
| VecEncoder | capped Poop-U6-18B >> 72B | [52.808 ns 52.976 ns 53.167 ns] |
| VecEncoder | re-use Poop-U1-3B >> 12B | [12.565 ns 12.605 ns 12.649 ns] |
| VecEncoder | re-use Poop-U3-9B >> 36B | [21.859 ns 21.906 ns 21.957 ns] |
| VecEncoder | re-use Poop-U6-18B >> 72B | [37.303 ns 37.371 ns 37.445 ns] |
If you know the output size and can deal with a potential panic out-of-bounds, FixedEncoder is fast.
Panic free VecEncoder capped means Vec::with_capacity() and re-use if needed e.g. with .clear()
If you have large output, use VecEncoder as arrays are more suitable for small outputs.
Dependencies
~0–690KB