U256

Pure Move language implementation of U256 numbers.

Would be nice to help with the TODO list, you can see it in the header comment.

Supported features:

• mul
• div
• add
• sub
• shift left
• shift right
• bitwise and, xor, or
• compare
• if math overflows the contract crashes with abort code.

The audit still missed, so use at your own risk.

Build

aptos move build

Test

aptos move test

Add as dependency

Add to Move.toml:

[dependencies.U256]
git = "https://github.com/pontem-network/U256.git"
rev = "v0.3.9"

And then use in code:

use u256::u256;
...
let a = u256::from_u128(10);
let b = u256::from_u64(10);

let c = u256::add(a, b);
let z = u256::as_u128(c);

License

Apache 2.0