Since the decision algorithm necessarily behaves discontinuously at the optimal solution value, it can itself be used as the test algorithm as well; however, in some cases other algorithms are used, in order to reduce the number of comparisons that must be simulated.
It can itself be used as the test algorithm as well. The decision algorithm necessarily behaves discontinuously at the optimal solution value. Other algorithms are used. This was in some cases. This was however. This was to reduce the number of comparisons that must be simulated.