Macro russell_chk::assert_approx_eq

macro_rules! assert_approx_eq {
    ($a : expr, $b : expr, $tol : expr) => { ... };
}

Asserts that two numbers are approximately equal to each other

Input

a – Left value b – Right value tol: f64 – Error tolerance such that |a - b| < tol

Examples

Accepts small error

let a = 3.0000001;
let b = 3.0;
assert_approx_eq!(a, b, 1e-6);

Panics on different value

let a = 1.0;
let b = 2.0;
assert_approx_eq!(a, b, 1e-6);