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bpo-29882: Add _Py_popcount32() function (GH-20518)

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* Rename pycore_byteswap.h to pycore_bitutils.h.
* Move popcount_digit() to pycore_bitutils.h as _Py_popcount32().
* _Py_popcount32() uses GCC and clang builtin function if available.
* Add unit tests to _Py_popcount32().
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Victor Stinner 2020-06-08 16:30:33 +02:00 • committed by GitHub
parent 301f0d4ff9
commit c6b292cdee
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11 changed files with 108 additions and 39 deletions
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Modules/_ctypes/cfield.c
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@ -1,5 +1,5 @@
#include "Python.h"
#include "pycore_byteswap.h" // _Py_bswap32()
#include "pycore_bitutils.h" // _Py_bswap32()
#include <ffi.h>
#ifdef MS_WIN32