26 lines
640 B
Python
26 lines
640 B
Python
class REAL: # nested.py
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def __init__(self, l, u):
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self.lower = l
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self.upper = u
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def asString(self, n):
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l = self.lower(n)
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u = self.upper(n)
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return ("[ " + l.numerator.digits() + "/" + l.denominator.digits() +
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", " + u.numerator.digits() + "/" + u.denominator.digits() + "]")
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def __add__(self, y):
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return REAL_add(self, y)
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class REAL_add(REAL):
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def __init__(self, x, y):
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self.x = x
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self.y = y
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def lower(self, n):
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return self.x.lower(n) + self.y.lower(n)
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def upper(self, n):
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return self.x.upper(n) + self.y.upper(n)
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