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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":" C API: Consider adding a public PyLong_GCD() function","articleBody":"# Feature or enhancement\r\n\r\nThe private _PyLong_GCD() function was removed in Python 3.13: see PR #108429.\r\n\r\n@scoder [asked](https://github.com/python/cpython/pull/108429#issuecomment-1772786659) what is the intended replacement for _PyLong_GCD(). I suppose that the replacement is to call ``math.gcd()``.\r\n\r\nIs it worth it to add a public PyLong_GCD() function to the C API? Is it commonly used?\r\n\r\nA code search for ``_PyLong_GCD`` is PyPI top 5,000 projects found 0 projects using it.\r\n\r\n@scoder: What is your use case for _PyLong_GCD()? Using ``math.gcd()`` doesn't solve your use case?\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-113887\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/vstinner","@type":"Person","name":"vstinner"},"datePublished":"2023-10-20T21:22:59.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":14},"url":"https://github.com/111139/cpython/issues/111139"}