Is there a modulus (not remainder) function / operation?

Question

In Rust (like most programming languages), the % operator performs the remainder operation, not the modulus operation. These operations have d

Answer 1

From the other answers I constructed:

fn n_mod_m  + std::ops::Add
 + Copy>
  (n: T, m: T) -> T {
    ((n % m) + m) % m
}

assert_eq!(n_mod_m(-21, 4), 3);