Alexander Belopolsky added the comment:
> Perhaps it's worth mentioning that several people on Python-ideas
> took the opposite view: math.floor() should return a float.
I sympathize with the idea that math module functions should return floats. I
find it unfortunate that math.floor delegates to the __floor__ dunder on
non-floats instead of doing math.floor(x.__float__()). It would be more
natural to have a floor builtin that *always* delegates to __floor__ and keep
math a pure float library.
Note that math module provides the means to compute C-style floor:
>>> x = float('inf')
>>> math.modf(x)[1]
inf
>>> x = -3.4
>>> math.modf(x)[1]
-3.0
Maybe we should add floorf, ceilf, etc. as well. This, however, is a different
issue from the one at hand here.
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue22444>
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