FACTDOUBLE

Syntax:

FACTDOUBLE ( n )

Description: Computes the double factorial of n.

Mathematical Formula:

If n is even:

If n is odd:

Arguments:

Name

Type

Description

n

number

The non-negative value whose double factorial is to be computed. n is truncated to an integer.

Return Type and Value: number – The double factorial of n.

However, if

  • n is negative, #NUM! is returned.

  • n is too large for the result to be representable, #NUM! is returned.

example: