vu64

The variable length integer encoding of u64. This is a simple and fast encoder/decoder.

format pattern

| Prefix | Precision | Total Bytes | |------------|-----------|-------------| | 0xxxxxxx | 7 bits | 1 byte | | 10xxxxxx | 14 bits | 2 bytes | | 110xxxxx | 21 bits | 3 bytes | | 1110xxxx | 28 bits | 4 bytes | | 11110xxx | 35 bits | 5 bytes | | 111110xx | 42 bits | 6 bytes | | 1111110x | 49 bits | 7 bytes | | 11111110 | 56 bits | 8 bytes | | 11111111 | 64 bits | 9 bytes |

This format is a like vint64, but 0x00 is represented by 0x00.

Examples

Encode

```rust use vu64::encode;

asserteq!(encode(0x0f0f).asref(), &[0x8F, 0x3c]); ```

Decode

```rust use vu64::decode;

let slice = [0x8F, 0x3c].asref(); asserteq!(decode(slice).unwrap(), 0x0f0f); ```

Encode and decode

```rust use vu64::{encode, decode};

let val = 1234; asserteq!(decode(encode(val).asref()).unwrap(), val); ```

Changelogs

This crate's changelog here.

References

• vint64
• varu64
• varbincode

License

This project is licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)

at your option.