34 releases (21 stable)
| new 1.0.20 | Feb 8, 2026 |
|---|---|
| 1.0.19 | Feb 1, 2026 |
| 1.0.18 | Jan 30, 2026 |
| 1.0.6 | Dec 31, 2025 |
| 0.0.1 | Dec 18, 2025 |
#149 in Value formatting
17,681,889 downloads per month
Used in 93,680 crates
(25 directly)
61KB
1K
SLoC
Żmij
Pure Rust implementation of Żmij, an algorithm to quickly convert floating point numbers to decimal strings.
This Rust implementation is a line-by-line port of Victor Zverovich's implementation in C++, https://github.com/vitaut/zmij.
Example
fn main() {
let mut buffer = zmij::Buffer::new();
let printed = buffer.format(1.234);
assert_eq!(printed, "1.234");
}
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
zmij::Buffer::new().format_finite(value) so a lower result indicates a faster
library.

License
Dependencies
~77KB