mirror of
https://github.com/urbit/ares.git
synced 2024-11-22 15:08:54 +03:00
27 lines
477 B
Rust
27 lines
477 B
Rust
use ibig::ubig;
|
|
use std::{
|
|
collections::hash_map::DefaultHasher,
|
|
hash::{Hash, Hasher},
|
|
};
|
|
|
|
fn hash<T>(x: &T) -> u64
|
|
where
|
|
T: Hash,
|
|
{
|
|
let mut hasher = DefaultHasher::new();
|
|
x.hash(&mut hasher);
|
|
hasher.finish()
|
|
}
|
|
|
|
#[test]
|
|
fn test_hash() {
|
|
let h = hash(&(ubig!(1) << 1000));
|
|
for i in 0..=1000 {
|
|
let h2 = hash(&(ubig!(1) << i << (1000 - i)));
|
|
assert_eq!(h2, h);
|
|
}
|
|
|
|
let h3 = hash(&(ubig!(2) << 1000));
|
|
assert!(h3 != h);
|
|
}
|