extprim

Thanks to RFC 1504 “int128”, you can use i128 and u128 directly on nightly Rust starting from 1.16. Using the built-in types are preferred.

Extra primitive types for stable Rust. Currently includes:

• u128 (unsigned 128-bit integers)
• i128 (signed 128-bit integers)

Documentation

You may also find other primitive types in other crates:

• u12 → twelve_bit
• f16 → half
• d128 → decimal
• Complex<T> → num-complex

Usage

```toml

Cargo.toml

[dependencies] extprim = "1.2.1" ```

If you want to use the u128!() and i128!() macros, please include the extprim_literals plugin. Details are explained in the documentation.

Example

```rust extern crate extprim;

use std::str::FromStr; use extprim::i128::i128;

fn main() { let a = i128::fromstr("100000000000000000000000000000000000000").unwrap(); // convert string to u128 or i128 let b = i128::new(10).pow(38); // 64-bit integers can be directly new'ed asserteq!(a, b); let c = i128::fromparts(5421010862427522170, 687399551400673280); // represent using the higher- and lower-64-bit parts let d = c - a; // standard operators like +, -, *, /, %, etc. work as expected. asserteq!(d, i128::zero()); } ```