contract;
 
// 1. Importing within the same project
// Using "mod" keyword, you can import an internal library that has been defined in this project.
mod sqrt_lib;
 
// It is a good practice to import in ABI
// It is also a good practice to define events and custom errors using this way
 
// Using "use" keyword imports in a library. This method is used to import an external lilbray that is defined outside the main `src` directory.
// use sqrt_lib::math_sqrt;
// $ tree
// .
// ├── my_project
// │   ├── Cargo.toml
// │   ├── Forc.toml
// │   └─── src
// │       └── main.sw
// │
// └── external_lib
//     ├── Cargo.toml
//     ├── Forc.toml
//     └─── src
//         └── lib.sw
// External library is outside the src directory of our project. Thus, it needs to be added as a dependency in the Forc.toml of our project.
// [dependencies]
// external_lib = { path = "../external_lib" }
 
 
// 2. Importing the standard library
// The standard library consists of
//   a. language primitives
//   b. blockchain contextual operations
//   c. native asset management
//   etc.
// Functions like msg.sender(), block.timestamp(),etc are found here https://github.com/FuelLabs/sway/tree/master/sway-lib-std
// use std::{
//     identity::*,
//     address::*,
//     constants::*,
//     auth::msg_sender,
// };
 
 
// 3. Importing from a different project
// If any library is not listed as a dependency, but present in forc.toml, you can use it as below.
// Math libraries copied from https://github.com/sway-libs/concentrated-liquidity/
// use math_lib::full_math::*;
 
use ::sqrt_lib::math_sqrt;
 
abi TestMath {
    fn test_square_root(x: u256) -> u256;
}
 
impl TestMath for Contract {
    fn test_square_root(x: u256) -> u256 {
        math_sqrt(x)
    }
}