Cargo run with approx for a slice of Complex

Cargo.toml

[package]
name = "approx"
version = "0.1.0"
authors = ["Clément Zotti <clement.zotti@imeka.ca>"]

[dependencies]
ndarray = ">=0.10.12,<0.12.0"
num = "0.1"

[dependencies.approx]
version = "0.2"
features = ["use_complex"]

main.rs

#[macro_use] extern crate approx;
extern crate ndarray;
extern crate num;

use num::complex::Complex;
use ndarray::arr2;


fn main() {

    let sh = arr2(&[
        [Complex::new(0.28205, 0.0),
         Complex::new(0.38415, 0.04054)],
        [Complex::new(0.28205, 0.0),
         Complex::new(0.38135, 0.05154)],
        [Complex::new(0.28205, 0.0),
         Complex::new(0.38095, 0.00784)]]);

    let gt = arr2(&[
        [Complex::new(0.28207, 0.0),
         Complex::new(0.38417, 0.04056)],
        [Complex::new(0.28207, 0.0),
         Complex::new(0.38137, 0.05156)],
        [Complex::new(0.28207, 0.0),
         Complex::new(0.38097, 0.00786)]]);

    assert_relative_eq!([1.0f32, 4.01f32][..], [1.0f32, 4.01f32][..]);
    assert_relative_eq!(Complex::new(0.2, 0.1), Complex::new(0.2, 0.1));
    assert_relative_eq!(&sh.as_slice().unwrap(), &gt.as_slice().unwrap());
}