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23 lines
573 B
23 lines
573 B
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Exercise 5.46: Carry out an analysis like the
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one in Exercise 5.45 to determine the effectiveness of compiling the
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tree-recursive Fibonacci procedure
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(define (fib n)
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(if (< n 2)
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n
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(+ (fib (- n 1)) (fib (- n 2)))))
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compared to the effectiveness of using the special-purpose Fibonacci machine of
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Figure 5.12. (For measurement of the interpreted performance, see
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Exercise 5.29.) For Fibonacci, the time resource used is not linear in
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n
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;
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hence the ratios of stack operations will not approach a limiting value
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that is independent of
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n
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.
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