message: Add clamp function
diff: @@ -109,3 +109,10 @@ pub mod traits {
  pub mod rational {
  pub use num_rational::*;
  }
  +
  +pub fn clamp<T: PartialOrd + Copy>(input: T, min: T, max: T) -> T {
  + debug_assert!(min < max, "min must be less than max");
  + if input < min {min}
  + else if input > max {max}
  + else {input}
  +}
  