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" ```

If you want to use the u128!() and i128!() macros, please include the extprim_literals plugin.

```toml

Cargo.toml

[dependencies] extprim = "1" extprim_literals = "2" ```

Example

```rust

[macro_use]

extern crate extprim_literals; 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::from_parts(5421010862427522170, 687399551400673280);
        // represent using the higher- and lower-64-bit parts
let d = c - a;
        // standard operators like +, -, *, /, %, etc. work as expected.
assert_eq!(d, i128::zero());

const e: i128 = i128!(100000000000000000000000000000000000000);
        // use the literal macros
assert_eq!(a, e);

} ```