# `⚡ float-derive`
**A crate that allows deriving Eq and Hash for types that contain floats 🦀**
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[crates-badge]: https://img.shields.io/crates/v/float-derive.svg
[crates-url]: https://crates.io/crates/float-derive
[license-badge]: https://img.shields.io/badge/License-MIT/Apache_2.0-blue.svg
[license-url]: LICENSE-MIT
[dependency-badge]: https://deps.rs/repo/github/projectkml/float-derive/status.svg
[dependency-url]: https://deps.rs/repo/github/projectkml/float-derive
toml
[dependencies]
float-derive = "0.1.0"
IEEE 754 floating point numbers can have the value NAN (not a number). It is unequal to any float, including itself! This is the reason `f32` and `f64` doesn’t implement the `Eq` trait.
This crate allows to derive `Eq` and `Hash` for traits that contain floating points by explicitly comparing floating points such that: NAN == NAN is true.
How to use
```Rust
use float_derive::{FloatPartialEq, FloatEq, FloatHash};
[derive(FloatPartialEq, FloatEq, FloatHash)]
struct MyStruct {
a: i32,
b: i32,
myfloat: f32,
mysecond_float: f64
}
[derive(FloatPartialEq, FloatEq, FloatHash)]
enum MyEnum {
A(i32, f32),
B { a: i32, b: f64 },
C
}
```
Credits