Constant MAX 

pub const MAX: f64 = f64::MAX; // 1.7976931348623157E+308f64

👎Deprecating in a future version: replaced by the MAX associated constant on f64

Largest finite f64 value. Use f64::MAX instead.

Examples

// deprecated way
let max = std::f64::MAX;

// intended way
let max = f64::MAX;