This is a very common question early each semester, and one that is understandable given the cost of textbooks. However, the library book collection is not focused on textbooks, although we do have some; our focus, and that of the faculty, who do most of the book ordering, is much broader.
But to answer the question, anything that we own, whether a textbook, novel, movie etc. will be in our library catalog. Just put in a word or two from the title and the author last name, and that should be a pretty definitive search. (As an aside, we have no way of searching for books by course number or professor name...) If your title comes up, great! Click on it to see both if it is in the library, and to make sure it is the same year and edition that your class requires. (All that info is in the record.) If the book doesn't come up we simply do not own it.
If you aren't sure about any of this, please ask one of us.