Fact

Type Function: DINT¶


Input X	INT (input)
Output	DINT (Faculty of X)
	The function FACT calculates the factorial of X.
	It is defined for input values from 0 .. 12. For values less than zero and greater than 12 is the result -1. For the factorial of larger numbers, the GAMMA function is suitable.
For natural numbers X	X! = 123...(X-1)X, 0! = 1
	Faculties of negative or non-whole numbers are not defined.

fact

Example:

1! = 1 2! = 1*2 = 2 5! = 1*2*3*4*5 = 120