`factorial``n`procedure- n
- integer

Returns the factorial of

`n`, which must be nonnegative. The factorial of`n`is the number`(* n (- n 1) (- n 2) ... 1)`.> (factorial 3) 6 > (factorial 0) 1

Wikipedia: Factorial

`factorial``n`procedure- n
- integer

Returns the factorial of

`n`, which must be nonnegative. The factorial of`n`is the number`(* n (- n 1) (- n 2) ... 1)`.> (factorial 3) 6 > (factorial 0) 1

Wikipedia: Factorial