FACT_DOUBLE

Returns the double factorial of a number. Used in statistical and mathematical formulas.

Examples

• FACT_DOUBLE(6) - Returns 48. Calculates 6 x 4 x 2.
• FACT_DOUBLE(7) - Returns 105. Calculates 7 x 5 x 3 x 1.
• FACT_DOUBLE(9) - Returns 945. Calculates 9 x 7 x 5 x 3 x 1.