dtoa
====
[
](https://github.com/dtolnay/dtoa)
[
](https://crates.io/crates/dtoa)
[
](https://docs.rs/dtoa)
[
](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"
```
## Example
```rust
fn main() {
let mut buffer = dtoa::Buffer::new();
let printed = buffer.format(2.71828f64);
assert_eq!(printed, "2.71828");
}
```
## 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
#### License
Licensed under either of Apache License, Version
2.0 or MIT license at your option.
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.