Clearly for any interval analysis method that deal with a problem involving expressions it is necessary to have a program that is able to interval evaluate these expressions. We will see also that having a program to interval evaluate the first and second derivatives may help to solve the problem. ALIAS-Maple provides various procedures that allow to create automatically such C++ program, being given only the expressions in Maple. These procedures will be presented in the next section. For testing purposes it may be interesting to have in Maple a procedure that interval evaluate an expression: such procedure will be presented in section 2.2. Special C++ code generating procedures will be presented in the section 2.3.