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Spread WPF Documentation / Formula Reference / Formula Functions / FACTDOUBLE
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    FACTDOUBLE
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    Summary

    This function calculates the double factorial of the specified number.

    Syntax

    FACTDOUBLE(number)

    Arguments

    The argument can be any non-negative numeric value.

    Remarks

    The number argument must be a non-negative number. If you provide a number that is not an integer for the number argument, the decimal portion of the number is ignored. The double factorial is calculated as follows for even numbers:

       n!! = n(n-2)(n-4) ... (4)(2)

    The double factorial is calculated as follows for odd numbers:

       n!! = n(n-2)(n-4) ... (3)(1)

    Data Types

    Accepts numeric data. Returns numeric data.

    Examples

    FACTDOUBLE(E3)

    FACTDOUBLE(R3C5)

    FACTDOUBLE(6) gives the result 48

    See Also