u256-literal

Description

This crate helps you to declare a constant U256 in an easy way. No need to wrap the integer literal around double quotes.

Usage

use primitive_types::U256;
use u256_literal::u256;

const Q96: U256 = u256!(0x1000000000000000000000000);

// support hex style integer
let x = u256!(0x1234ff);
// support normal style
let y = u256!(987654);
// support float style number
let z = u256!(1.23e18);

License

All crates licensed under either of

• Apache License, Version 2.0
• MIT license

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

lib.rs:

This crate provides u256! macro for converting u256 literals to actual primitive_types::U256 at compile time. This is helpful when you're trying to define a const U256.

It supports 0x prefix and normal decimals. When the number is too large to fit into U256, it would complain.

This crate assumes you have primitive-types added to your Cargo.toml dependency.

Examples

let x = u256!(123454444444444444444444444444444444444444444);
let y = u256!(0x123456789827823721235568483);
let z = u256!(1e18);
let w = u256!(1.23e18);