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@ -14,7 +14,7 @@ __all__ = ["Rational"]
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RationalAbc = numbers.Rational
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def _gcd(a, b):
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def _gcd(a, b): # XXX This is a useful function. Consider making it public.
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"""Calculate the Greatest Common Divisor.
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Unless b==0, the result will have the same sign as b (so that when
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