Rounds a number down, towards zero.
| Name | Type | Description |
| arg1 | number | Is any real number that you want rounded down. |
| arg2 | number | Is the number of digits to which you want to round. Negative rounds to the left of the decimal point; zero or omitted, to the nearest integer. |
builder.CreateFile("xlsx");
var oWorksheet = Api.GetActiveSheet();
var oFunction = Api.GetWorksheetFunction();
oWorksheet.GetRange("A1").SetValue(oFunction.ROUNDDOWN(3.456, 0));
builder.SaveFile("xlsx", "ROUNDDOWN.xlsx");
builder.CloseFile();