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27 lines
477 B
Rust
27 lines
477 B
Rust
use ibig::ubig;
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use std::{
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collections::hash_map::DefaultHasher,
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hash::{Hash, Hasher},
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};
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fn hash<T>(x: &T) -> u64
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where
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T: Hash,
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{
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let mut hasher = DefaultHasher::new();
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x.hash(&mut hasher);
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hasher.finish()
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}
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#[test]
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fn test_hash() {
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let h = hash(&(ubig!(1) << 1000));
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for i in 0..=1000 {
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let h2 = hash(&(ubig!(1) << i << (1000 - i)));
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assert_eq!(h2, h);
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}
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let h3 = hash(&(ubig!(2) << 1000));
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assert!(h3 != h);
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}
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