extern crate num;
use num::complex::Complex;

fn main() {
    // two valid forms of definition
    let a = Complex {re:-4.0, im: 5.0};
    let b = Complex::new(1.0, 1.0);

    println!("   a    = {}", a);
    println!("   b    = {}", b);
    println!(" a + b  = {}", a + b);
    println!(" a * b  = {}", a * b);
    println!(" 1 / a  = {}", a.inv());
    println!("  -a    = {}", -a);
    println!("conj(a) = {}", a.conj());
}