Trait Alias NumOps 

trait NumOps<Rhs = Self, Output = Self> = Add<Rhs, Output = Output>
    + Sub<Rhs, Output = Output>
    + Mul<Rhs, Output = Output>
    + Div<Rhs, Output = Output>
    + Rem<Rhs, Output = Output>;

num::traits::NumOps

see

• https://docs.rs/num/latest/num/traits/trait.NumOps.html
• https://docs.rs/num-traits/0.2.14/src/num_traits/lib.rs.html#110-117