# generic-interval
[](https://crates.io/crates/generic-interval)
[](https://docs.rs/generic-interval/)
[](https://opensource.org/license/mit/)
[](https://github.com/kenba/interval-rs/actions)
[](https://codecov.io/gh/kenba/interval-rs)
A generic closed interval library.
An interval is a pair of numbers which represents all the numbers between them.
Intervals are considered closed so the bounds are included.
Intervals are written [a, b] to represent all the numbers between a and b inclusive, a ≤ b.
The library is designed to be used with any types that implement the
`Copy` and `PartialOrd` traits including the floating point types:
`f64` and `f32` and arithmetic types in
[new types](https://doc.rust-lang.org/rust-by-example/generics/new_types.html).
The library is declared [no_std](https://docs.rust-embedded.org/book/intro/no-std.html)
so it can be used in embedded applications.
## Examples
```rust
use generic_interval::{Interval, hull, intersection, overlap, overlaps};
// An example new-type based on f64
#[derive(Clone, Copy, Debug, PartialEq, PartialOrd)]
pub struct Metres(pub f64);
let a = Interval::try_from((Metres(1.0), Metres(4.0))).unwrap();
let b = Interval::try_from((Metres(6.0), Metres(9.0))).unwrap();
// Note: the hull includes 4.0-6.0
let result = hull(a, b);
assert_eq!(Metres(1.0), result.lower());
assert_eq!(Metres(9.0), result.upper());
// Note: overlap may return an empty interval
// while overlaps is the same as intersection
let result = intersection(a, b);
assert!(result.is_none());
let result = overlaps(a, b);
assert!(result.is_none());
let result = overlap(a, b);
assert!(result.is_empty());
let c = Interval::try_from((Metres(4.0), Metres(9.0))).unwrap();
let result = intersection(a, c).unwrap();
assert_eq!(Metres(4.0), result.lower());
assert_eq!(Metres(4.0), result.upper());
```
## License
`generic-interval` is provided under a MIT license, see [LICENSE](LICENSE).