Trait Factorial

pub trait Factorial {
    type Output;

    // Required method
    fn factorial(&self) -> Self::Output;
}

Allows the usage of factorials i.e. x! usually defined as:

• x! = x*(x-1)!
• 0! = 1

for x ∈ ℕ.

The definition of the factorial function can be expanded to the domain of all real numbers using the gamma function:

x! = 𝜞(x+1)

Required Associated Types

type Output

Required Methods

fn factorial(&self) -> Self::Output

Implementations on Foreign Types

impl Factorial for f32

type Output = f32

fn factorial(&self) -> Self::Output

impl Factorial for f64

type Output = f64

fn factorial(&self) -> Self::Output

impl Factorial for i8

type Output = f64

fn factorial(&self) -> Self::Output

impl Factorial for i16

type Output = f64

fn factorial(&self) -> Self::Output

impl Factorial for i32

type Output = f64

fn factorial(&self) -> Self::Output

impl Factorial for i64

type Output = f64

fn factorial(&self) -> Self::Output

impl Factorial for i128

type Output = f64

fn factorial(&self) -> Self::Output

impl Factorial for isize

type Output = f64

fn factorial(&self) -> Self::Output

impl Factorial for u8

type Output = u128

fn factorial(&self) -> Self::Output

impl Factorial for u16

type Output = u128

fn factorial(&self) -> Self::Output

impl Factorial for u32

type Output = u128

fn factorial(&self) -> Self::Output

impl Factorial for u64

type Output = u128

fn factorial(&self) -> Self::Output

impl Factorial for u128

type Output = u128

fn factorial(&self) -> Self::Output

impl Factorial for usize

type Output = u128

fn factorial(&self) -> Self::Output

Implementors