Created attachment 30391 [details] FactDoubleFunctionTestCaseData.xls Returns the double factorial of a number. FACTDOUBLE(number) Number is the value for which to return the double factorial. If number is not an integer, it is truncated. Remarks If number is nonnumeric, FACTDOUBLE returns the #VALUE! error value. If number is negative, FACTDOUBLE returns the #NUM! error value. Use a cache for more speed of previously calculated factorial
Created attachment 30392 [details] FactDouble patch
Created attachment 30455 [details] Add additional sanity check/integration test FormulaEvalTestData.xls
merged in r1530907