A generic raise operation

Suppose you are designing a generic arithmetic system for dealing with the tower of types shown in figure 2.25: integer, rational, real, complex. For each type (except complex), design a procedure that raises objects of that type one level in the tower. Show how to install a generic raise operation that will work for each type (except complex).

Figure 2.25: A tower of types.

Nobody's finished this exercise yet. You'll be the first!

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