There is arguably no obvious mapping from a Boolean to a float so implementation of From<bool> for f32 and f64 should document its outputs

[bmoxb]

Location

https://doc.rust-lang.org/stable/std/primitive.f32.html#impl-From%3Cbool%3E-for-f32

Summary

In Rust 1.68.0, From<bool> is implemented on f32 and f64. It is not very clear how a Boolean value could be converted into a float and the documentation offers no explanation - I had to look at the actual implementation to figure out the output value. It seems sensible that the output of this implementation of From be given in the documentation.

[cuviper]

From<bool> for {integer} docs say, "The resulting value is 0 for false and 1 for true values." We should add similar statements for floats.

[bmoxb]

@rustbot claim