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module math
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fn test_factorial() {
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assert factorial(12) == 479001600
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assert factorial(5) == 120
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assert factorial(0) == 1
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}
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fn test_log_factorial() {
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assert log_factorial(12) == log(479001600)
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assert log_factorial(5) == log(120)
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assert log_factorial(0) == log(1)
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}
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