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10 lines
574 B
10 lines
574 B
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Exercise 3.6: It is useful to be able to reset a
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random-number generator to produce a sequence starting from a given value.
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Design a new rand procedure that is called with an argument that is
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either the symbol generate or the symbol reset and behaves as
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follows: (rand 'generate) produces a new random number; ((rand
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'reset) ⟨new-value⟩) resets the internal state variable to the
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designated ⟨new-value⟩. Thus, by resetting the state, one can generate
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repeatable sequences. These are very handy to have when testing and debugging
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programs that use random numbers.
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