Literal macros for extprim.

This crate provides a syntex extension (on stable) so that the extprim types can be constructed at compile-time using the i128!() and u128!() macros.

Setup

Simply add extprim_literals to dependencies in Cargo.toml:

[dependencies]
extprim_literals = "2.0"

Use the macros in src/consts.rs:

#[macro_use] extern crate extprim_literals;
extern crate extprim;
use extprim::u128::u128;

const TEN: u128 = u128!(10);
# fn main() {}