Truncates the input to the next lowest integer.
For example, if the input is 3.8, the result is 3. If the input is –3.8, the result is –4. The connector pane displays the default data types for this polymorphic function.

Refer to the Add - Various Uses VI in the labview\examples\general\functions\Numeric directory for an example of using the Round Toward -Infinity function.