Add Add trait implementation to OrderedFloat?

[tiby312]

This way you could pass an ordered float to a generic function that requires Add+Ord. Same question for Sub/Mul/Div.

[tiby312]

If I have a computation heavy generic math function that requires Ord, I would rather pass it an OrderedFloat instead of a NotNan since NotNan adds overhead to each computation, unlike OrderedFloat which only incurrs overhead on comparisons.

[martinellison]

The pathfinding crate requires at least num_traits::identities::Zero and OrderedFloat does not implement this. Actually, there are several more traits in num_traits that might be useful to someone.