gh-119714: Add PyLong_GetNumBits() function#119715
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gh-119714: Add PyLong_GetNumBits() function#119715vstinner wants to merge 6 commits intopython:mainfrom
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| self.assertEqual(numbits(0), 0) | ||
| self.assertEqual(numbits(7), 3) | ||
| self.assertEqual(numbits(-37), 6) | ||
| self.assertEqual(numbits(684_643_661_981), 40) | ||
| self.assertEqual(numbits(2**123-1), 123) |
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There are no tests for the two overflow cases.
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I added a test, but it requires 1145324612.3 GiB of memory to run :-) On 32-bit systems, the test pass and only requires 273 MiB.
Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com>
Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com>
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PR rebased to fix merge conflicts with the main branch (with the new PyLong_GetSign() function). |
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The C API Working Group rejected this API: |
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📚 Documentation preview 📚: https://cpython-previews--119715.org.readthedocs.build/