[issue38639] Optimize floor(), ceil() and trunc() for floats

[Serhiy Storchaka]

Change by Serhiy Storchaka <storchaka+cpython at gmail.com>:


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title: Optimize floor() and ceil() for floats -> Optimize floor(), ceil() and trunc() for floats

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38639>
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