Also mark the case of an uninitialised memory view slice as "unlikely()" when refcounting it since it's most probably not a performance critical case.

Mark the last deletion of a memory view slice as "unlikely()" to ask the C compiler to optimise for the repeated re-use case (usually in loops).

Mark the first creation of a memory view slice as "unlikely()" to ask the C compiler to optimise for the repeated re-use case (usually in loops).

Closes https://github.com/cython/cython/issues/3594

Closes https://github.com/cython/cython/issues/1462

Move the work directory of the examples tests into an 'examples/' subdirectory to get it out of the way of the other test types.

Move the work directory of the examples tests into an 'examples/' subdirectory to get it out of the way of the other test types.

Make sure the module init function is declared as 'extern "C"' in C++ also when the CYTHON_NO_PYINIT_EXPORT option is used.
Closes #3414.

Closes #3038.

Closes #3038.

https://github.com/numpy/numpy/pull/16170/commits/e00d94b70880b1321eff727ac7eb897be7422340

Avoid MSVC warning in refnanny about an integer assignment that reduces the value range (although it's probably safe to assume that C code line numbers > 2^30 will remain rare for another while).

Avoid an additional utility code section for 2-exception matching by relying on existing special-cased macros.

For Py3.5+, where inittab should really be used instead. For GCC, Clang, MSVC and C++14

Add a dedicated subtype check function for testing against two possible base classes in Py3 (currently used for generator exception checks).

Simplify and clean up the embedded main import code to make it work how it's officially supposed to work: use the inittab.