The only obvious way to test if some operation is going to produce some value(s) is to perform that operation. Yes, for, say, a single multiplication I can anti

The only obvious way to test if some operation is going to produce some value(s) is to perform that operation. Yes, for, say, a single multiplication I can anticipate the necessary bounds for each input value. But even short sequences of operations would quickly devolve into labyrinthine nested switch statements.