Avoid overflow/underflow in math.prod()

未关闭

#85,630 创建于 2020年8月2日 28 条评论 0 个 reaction 已指派 0 人在 GitHub 查看

还没有人认领这个 Issue。

评估

难度: 5/5
预计耗时: 一周以上
新手友好度: 25/100

Issue 类型: 缺陷
描述清晰度: 需要澄清
活跃度: 停滞
技术栈: python
领域: backend

调研方向

首先阅读链接的 sum_and_prod.py 提案以及 CPython 中现有的 math.prod() 实现。查看 issue 讨论，以确定 overflow 和 underflow 的预期行为，然后添加有针对性的回归覆盖；完成的标准是能够处理已达成一致的情况，同时不改变 math.prod() 的其他行为。

由索引模型根据 Issue 内容生成。

描述

stdlib type-bug

BPO	41458
Nosy	@tim-one, @rhettinger, @mdickinson, @vedgar, @pablogsal, @websurfer5
Files	sum_and_prod.py: Low memory variant with fast path

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

Show more details

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-08-02.20:03:18.588>
labels = ['type-bug', 'library', '3.10']
title = 'Avoid overflow/underflow in math.prod()'
updated_at = <Date 2020-08-10.02:11:01.976>
user = 'https://github.com/rhettinger'

bugs.python.org fields:

activity = <Date 2020-08-10.02:11:01.976>
actor = 'tim.peters'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2020-08-02.20:03:18.588>
creator = 'rhettinger'
dependencies = []
files = ['49373']
hgrepos = []
issue_num = 41458
keywords = []
message_count = 28.0
messages = ['374693', '374734', '374737', '374745', '374748', '374914', '374915', '374921', '374927', '374928', '374929', '374943', '374959', '374960', '374962', '374964', '374966', '374968', '374969', '374970', '374984', '375048', '375049', '375052', '375054', '375075', '375078', '375091']
nosy_count = 6.0
nosy_names = ['tim.peters', 'rhettinger', 'mark.dickinson', 'veky', 'pablogsal', 'Jeffrey.Kintscher']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue41458'
versions = ['Python 3.10']

主要语言: Python
星标: 77.2k
派生: 36k
平均合并: 1 天 9 小时
30 天内合并 PR: 558