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25 lines
485 B
Python
25 lines
485 B
Python
"""
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https://en.wikipedia.org/wiki/Floor_and_ceiling_functions
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"""
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def ceil(x: float) -> int:
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"""
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Return the ceiling of x as an Integral.
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:param x: the number
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:return: the smallest integer >= x.
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>>> import math
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>>> all(ceil(n) == math.ceil(n) for n
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... in (1, -1, 0, -0, 1.1, -1.1, 1.0, -1.0, 1_000_000_000))
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True
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"""
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return int(x) if x - int(x) <= 0 else int(x) + 1
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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