What does the INT function do?

The INT function in SAS specifically returns the integer portion of a numeric value by truncating any decimal portion, meaning it simply removes the digits to the right of the decimal point without performing rounding. For example, applying the INT function to the value 5.9 will yield 5, and applying it to -5.9 will result in -5, as the function does not round upwards but instead truncates towards zero.

Understanding this function is essential for data manipulation tasks where maintaining the whole number part of a numeric variable is necessary without altering its sign or value due to rounding. The other options focus on different functionalities—such as converting character data to numeric or removing spaces—that do not pertain to the behavior of the INT function. Thus, the correct identification of its functionality as truncating ensures clarity for its use in practical scenarios in SAS programming.