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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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Objects/stringlib/codecs.h
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@ -4,7 +4,7 @@
# error "codecs.h is specific to Unicode"
#endif
#include "pycore_byteswap.h" // _Py_bswap32()
#include "pycore_bitutils.h" // _Py_bswap32()
/* Mask to quickly check whether a C 'long' contains a
non-ASCII, UTF8-encoded char. */