macro_rules! assert_approx_eq {
    ($left:expr, $right:expr, $max_rel_diff:expr $(,)?) => { ... };
    ($left:expr, $right:expr, $max_rel_diff:expr, $($args:tt)+) => { ... };
Expand description

Asserts that two expressions are approximately equal to each other.

The max_rel_diff argument defines the maximum relative difference of the left and right values.

On panic, this macro will print the values of the arguments and the actual relative difference.

Like assert_eq!, this macro has a second form, where a custom panic message can be provided.