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3 commits

Author SHA1 Message Date
Victor Stinner
ec306a2fd9
bpo-41617: Add _Py__has_builtin() macro (GH-23260) (GH-23262) 
Fix building pycore_bitutils.h internal header on old clang version
without __builtin_bswap16() (ex: Xcode 4.6.3 on Mac OS X 10.7).

Add a new private _Py__has_builtin() macro to check for availability
of a preprocessor builtin function.

Co-Authored-By: Joshua Root <jmr@macports.org>

Co-authored-by: Joshua Root <jmr@macports.org>
(cherry picked from commit b3b98082c5)
 2020-11-13 16:38:06 +01:00
Victor Stinner
4217b3c128
bpo-41617: Fix pycore_byteswap.h to support clang 3.0 (GH-22042) (GH-22044) 
__builtin_bswap16() is not available in LLVM clang 3.0.

(cherry picked from commit e6905e4c82)
 2020-09-01 20:54:37 +02:00
Victor Stinner
1ae035b7e8
bpo-40302: Add pycore_byteswap.h header file (GH-19552) 
Add a new internal pycore_byteswap.h header file with the following
functions:

* _Py_bswap16()
* _Py_bswap32()
* _Py_bswap64()

Use these functions in _ctypes, sha256 and sha512 modules,
and also use in the UTF-32 encoder.

sha256, sha512 and _ctypes modules are now built with the internal
C API.
 2020-04-17 17:47:20 +02:00