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.. currentmodule:: numpy
==========================
NumPy 1.21.4 Release Notes
==========================
The NumPy 1.21.4 is a maintenance release that fixes a few bugs discovered
after 1.21.3. The most important fix here is a fix for the NumPy header files
to make them work for both x86_64 and M1 hardware when included in the Mac
universal2 wheels. Previously, the header files only worked for M1 and this
caused problems for folks building x86_64 extensions. This problem was not seen
before Python 3.10 because there were thin wheels for x86_64 that had
precedence. This release also provides thin x86_64 Mac wheels for Python 3.10.
The Python versions supported in this release are 3.7-3.10. If you want to
compile your own version using gcc-11, you will need to use gcc-11.2+ to avoid
problems.
Contributors
============
A total of 7 people contributed to this release. People with a "+" by their
names contributed a patch for the first time.
* Bas van Beek
* Charles Harris
* Isuru Fernando
* Matthew Brett
* Sayed Adel
* Sebastian Berg
* 傅立业（Chris Fu） +
Pull requests merged
====================
A total of 7 pull requests were merged for this release.
* `#20278 <https://github.com/numpy/numpy/pull/20278>`__: BUG: Fix shadowed reference of `dtype` in type stub
* `#20293 <https://github.com/numpy/numpy/pull/20293>`__: BUG: Fix headers for universal2 builds
* `#20294 <https://github.com/numpy/numpy/pull/20294>`__: BUG: ``VOID_nonzero`` could sometimes mutate alignment flag
* `#20295 <https://github.com/numpy/numpy/pull/20295>`__: BUG: Do not use nonzero fastpath on unaligned arrays
* `#20296 <https://github.com/numpy/numpy/pull/20296>`__: BUG: Distuils patch to allow for 2 as a minor version (!)
* `#20297 <https://github.com/numpy/numpy/pull/20297>`__: BUG, SIMD: Fix 64-bit/8-bit integer division by a scalar
* `#20298 <https://github.com/numpy/numpy/pull/20298>`__: BUG, SIMD: Workaround broadcasting SIMD 64-bit integers on MSVC...
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