//! # My Crate
//!
//! `my_crate` is a collection of utilities to make performing certain
//! calculations more convenient.

/// Adds one to the number given.
// --snip--

pub use convert::exp;
pub use convert::level;


pub mod convert {

    fn calc(stage: i64, amount: i64) -> i64 {
        amount * (stage * 100)
    }

    /// convert level into exp
    pub fn exp(level: i64) -> i64 {
        let s = (level / 10) + 1;
        let r: i64 = level % 10;
        let mut l: i64 = calc(s, r);
    
        for cs in 1..s {
            l += calc(cs, 10)
        }
    
        l
    }

    /// convert exp into level
    pub fn level(exp: i64) -> i64 {

        let mut x: i64 = 0;
        let mut l: i64 = 0;
        let mut s: i64 = 0;
    
        loop {
            s += 1;
            let x2 = x + calc(s, 10);
            if x2 >= exp {
                l += (exp - x) / calc(s, 1);
                break
            }
            x = x2;
            l += 10
        }
    
        l
    }


}




fn main() {
    println!("{}", convert::exp(102))
}