Python/maths/ceil.py
Du YuanChao 8c443ccfad add floor() (#1551)
* ceil and floor

* ceil and floor
2019-11-04 08:28:51 +01:00

19 lines
436 B
Python

def ceil(x) -> int:
"""
Return the ceiling of x as an Integral.
:param x: the number
:return: the smallest integer >= x.
>>> import math
>>> all(ceil(n) == math.ceil(n) for n in (1, -1, 0, -0, 1.1, -1.1, 1.0, -1.0, 1_000_000_000))
True
"""
return x if isinstance(x, int) or x - int(x) == 0 else int(x + 1) if x > 0 else int(x)
if __name__ == '__main__':
import doctest
doctest.testmod()