comparison_chain false positive for f64

[youknowone]

$ cargo clippy -V
clippy 0.0.212 (c8e3cfbd 2019-10-28)

The below happens when modulus is a f64 vairalbe.

warning: `if` chain can be rewritten with `match`
   --> vm/src/stdlib/math.rs:327:9
    |
327 | /         if modulus < c {
328 | |             r = modulus;
329 | |         } else if modulus > c {
330 | |             r = -c;
331 | |         } else {
332 | |             r = modulus - 2.0 * fmod(0.5 * (absx - modulus), absy);
333 | |         }
    | |_________^
    |
    = note: `#[warn(clippy::comparison_chain)]` on by default
    = help: Consider rewriting the `if` chain to use `cmp` and `match`.
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#comparison_chain

The link in help is not helpful for f64. So I guess this is a false positive or lack of help document

[ghost]

I can't reproduce this error. The lint checks that the type implements Ord so this shouldn't be happening. Can you provide an example on the rust playground?

[flip1995]

The Ord thing was fixed on Nov 18: #4827

Closing this issue, since it's already fixed.