# bigint [![Build Status](https://travis-ci.org/paritytech/primitives.svg?branch=master)](https://travis-ci.org/paritytech/primitives) Fixed-sized integers arithmetic To specify a dependency, add to `Cargo.toml` ```toml [dependencies] ethereum-types = "0.1" ``` Little example ```rust extern crate ethereum_types; use ethereum_types::U256; fn main() { let mut val: U256 = 1023.into(); for _ in 0..200 { val = val * 2.into() } assert_eq!( &format!("{}", val), "1643897619276947051879427220465009342380213662639797070513307648" ); } ``` ### `no_std` crates This crate has a feature, `std`, that is enabled by default. To use this crate in a `no_std` context, add the following to your `Cargo.toml`: ```toml [dependencies] ethereum-types = { version = "4", default-features = false } ```