Macro approx::abs_diff_eq 
source · macro_rules! abs_diff_eq {
    ($lhs:expr, $rhs:expr $(, $opt:ident = $val:expr)*) => { ... };
    ($lhs:expr, $rhs:expr $(, $opt:ident = $val:expr)*,) => { ... };
}Expand description
Approximate equality of using the absolute difference.