Float provides an interface for working with floating point numbers, currently 64 and 32 bit.
```rust
/// Returns the NaN value
fn nan() -> Self;
/// Returns Infinity fn infinity() -> Self;
/// Returns -Infinity fn neg_infinity() -> Self;
/// Returns true if the float is NaN fn is_nan(self) -> bool;
/// Returns true if the float is positive or negative infinity fn is_infinite(self) -> bool;
/// Returns true if the number is not NaN and not infinity fn is_finite(self) -> bool;
/// Returns true if the number is not zero, infinite, denormal or NaN. fn is_normal(self) -> bool;
/// Returns the category this number belongs to fn classify(self) -> FpCategory;
```