cpython

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Author	SHA1	Message	Date
Niklas Fiekas	794e7d1ab2	bpo-29782: Consolidate _Py_Bit_Length() (GH-20739) In GH-2866, _Py_Bit_Length() was added to pymath.h for lack of a better location. GH-20518 added a more appropriate header file for bit utilities. It also shows how to properly use intrinsics. This allows reconsidering bpo-29782. * Move the function to the new header. * Changed return type to match __builtin_clzl() and reviewed usage. * Use intrinsics where available. * Pick a fallback implementation suitable for inlining.	2020-06-15 14:33:48 +02:00
Victor Stinner	c6b292cdee	bpo-29882: Add _Py_popcount32() function (GH-20518) * 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().	2020-06-08 16:30:33 +02:00

Author

SHA1

Message

Date

Niklas Fiekas

794e7d1ab2

bpo-29782: Consolidate _Py_Bit_Length() (GH-20739)

In GH-2866, _Py_Bit_Length() was added to pymath.h for lack of a better
location. GH-20518 added a more appropriate header file for bit utilities. It
also shows how to properly use intrinsics. This allows reconsidering bpo-29782.

* Move the function to the new header.
* Changed return type to match __builtin_clzl() and reviewed usage.
* Use intrinsics where available.
* Pick a fallback implementation suitable for inlining.

2020-06-15 14:33:48 +02:00

Victor Stinner

c6b292cdee

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

* 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().

2020-06-08 16:30:33 +02:00

Renamed from Include/internal/pycore_byteswap.h (Browse further)

2 commits