assert_approx_eq 1.1.0

assert approximately equal
Documentation 
1
2
3
4
5
6
7
8
9

use assert_approx_eq::assert_approx_eq;

fn main() {
    let a = 3f64;
    let b = 4f64;

    assert_approx_eq!(a, a);
    assert_approx_eq!(a, b, 2f64);
}