Macro assert_in_epsilon_as_result 

macro_rules! assert_in_epsilon_as_result {
    ($a:expr, $b:expr, $epsilon:expr $(,)?) => { ... };
}

Assert a number is within epsilon of another.

Pseudocode:
| a - b | ≤ ε * min(a, b)

• If true, return Result Ok((lhs, rhs)).

• When false, return Err with a message and the values of the expressions with their debug representations.

This macro is useful for runtime checks, such as checking parameters, or sanitizing inputs, or handling different results in different ways.

Module macros

• assert_in_epsilon
• assert_in_epsilon_as_result
• debug_assert_in_epsilon