Returns the sign of a number: 1 if the number is positive, zero if the number is zero, or -1 if the number is negative.
| Name | Type | Description |
| arg1 | number | Is any real number. |
builder.CreateFile("xlsx");
var oWorksheet = Api.GetActiveSheet();
var oFunction = Api.GetWorksheetFunction();
oWorksheet.GetRange("A1").SetValue(oFunction.SIGN(12));
builder.SaveFile("xlsx", "SIGN.xlsx");
builder.CloseFile();