INT
Returns the integer resulting from truncating a number.
    Syntax
INT(Value)
Value is a number or a formula
        resulting in a number. If Value is positive, the result
        is the largest integer less than or equal to Value. If
          Value is negative, the result is the smallest integer
        greater than or equal to Value. 
Examples
This example returns 7:
INT(7.8)
      
This example returns -7:
INT(-7.8)