pub fn cast<T: NumCast, U: NumCast>(n: T) -> Option<U>
Cast from one machine scalar to another.
fn main() {
use std::num;
let twenty: f32 = num::cast(0x14i).unwrap();
assert_eq!(twenty, 20f32);
}
use std::num;
let twenty: f32 = num::cast(0x14i).unwrap();
assert_eq!(twenty, 20f32);
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