Function std::f64::powi
pub fn powi(n: f64, e: i32) -> f64
pub fn powi(n: f64, e: i32) -> f64
Prefix searches with a type followed by a colon (e.g.
fn:) to restrict the search to a given type.
Accepted types are: fn, mod,
struct (or str), enum,
trait, typedef (or
tdef).