67 lines
2.2 KiB
Markdown
67 lines
2.2 KiB
Markdown
dtoa
|
|
====
|
|
|
|
[<img alt="github" src="https://img.shields.io/badge/github-dtolnay/dtoa-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/dtolnay/dtoa)
|
|
[<img alt="crates.io" src="https://img.shields.io/crates/v/dtoa.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/dtoa)
|
|
[<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-dtoa-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs" height="20">](https://docs.rs/dtoa)
|
|
[<img alt="build status" src="https://img.shields.io/github/actions/workflow/status/dtolnay/dtoa/ci.yml?branch=master&style=for-the-badge" height="20">](https://github.com/dtolnay/dtoa/actions?query=branch%3Amaster)
|
|
|
|
This crate provides fast conversion of floating point primitives to decimal
|
|
strings. The implementation is a straightforward Rust port of [Milo Yip]'s C++
|
|
implementation [dtoa.h]. The original C++ code of each function is included in
|
|
comments.
|
|
|
|
See also [`itoa`] for printing integer primitives.
|
|
|
|
[Milo Yip]: https://github.com/miloyip
|
|
[dtoa.h]: https://github.com/miloyip/rapidjson/blob/master/include/rapidjson/internal/dtoa.h
|
|
[`itoa`]: https://github.com/dtolnay/itoa
|
|
|
|
```toml
|
|
[dependencies]
|
|
dtoa = "1.0"
|
|
```
|
|
|
|
<br>
|
|
|
|
## Example
|
|
|
|
```rust
|
|
fn main() {
|
|
let mut buffer = dtoa::Buffer::new();
|
|
let printed = buffer.format(2.71828f64);
|
|
assert_eq!(printed, "2.71828");
|
|
}
|
|
```
|
|
|
|
<br>
|
|
|
|
## Performance
|
|
|
|
The [dtoa-benchmark] compares this library and other Rust floating point
|
|
formatting implementations across a range of precisions. The vertical axis in
|
|
this chart shows nanoseconds taken by a single execution of
|
|
`dtoa::Buffer::new().format_finite(value)` so a lower result indicates a faster
|
|
library.
|
|
|
|
[dtoa-benchmark]: https://github.com/dtolnay/dtoa-benchmark
|
|
|
|
|
|
|
|
<br>
|
|
|
|
#### License
|
|
|
|
<sup>
|
|
Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
|
|
2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
|
|
</sup>
|
|
|
|
<br>
|
|
|
|
<sub>
|
|
Unless you explicitly state otherwise, any contribution intentionally submitted
|
|
for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
|
|
be dual licensed as above, without any additional terms or conditions.
|
|
</sub>
|