Exercise 2.75 · 习题

Exercise 2.75: Implement the constructor

make-from-mag-ang in message-passing style. This procedure should be

analogous to the make-from-real-imag procedure given above.

练习 2.75：用消息传递风格实现构造函数 make-from-mag-ang。该过程应类似于上面给出的 make-from-real-imag 过程。