Function unchecked_mul
unsafe const fn unchecked_mul<T: Copy>(x: T, y: T) -> T
Returns the result of an unchecked multiplication, resulting in
undefined behavior when x * y > T::MAX or x * y < T::MIN.
The stable counterpart of this intrinsic is unchecked_mul on the various
integer types, such as u16::unchecked_mul and i64::unchecked_mul.