.. currentmodule:: numpy

=========================
NumPy 2.3.1 Release Notes
=========================

The NumPy 2.3.1 release is a patch release with several bug fixes, annotation
improvements, and better support for OpenBSD. Highlights are:

- Fix bug in ``matmul`` for non-contiguous out kwarg parameter
- Fix for Accelerate runtime warnings on M4 hardware
- Fix new in NumPy 2.3.0 ``np.vectorize`` casting errors
- Improved support of cpu features for FreeBSD and OpenBSD 

This release supports Python versions 3.11-3.13, Python 3.14 will be supported
when it is released.


Contributors
============

A total of 9 people contributed to this release.  People with a "+" by their
names contributed a patch for the first time.

* Brad Smith +
* Charles Harris
* Developer-Ecosystem-Engineering
* François Rozet
* Joren Hammudoglu
* Matti Picus
* Mugundan Selvanayagam
* Nathan Goldbaum
* Sebastian Berg


Pull requests merged
====================

A total of 12 pull requests were merged for this release.

* `#29140 <https://github.com/numpy/numpy/pull/29140>`__: MAINT: Prepare 2.3.x for further development
* `#29191 <https://github.com/numpy/numpy/pull/29191>`__: BUG: fix matmul with transposed out arg (#29179)
* `#29192 <https://github.com/numpy/numpy/pull/29192>`__: TYP: Backport typing fixes and improvements.
* `#29205 <https://github.com/numpy/numpy/pull/29205>`__: BUG: Revert ``np.vectorize`` casting to legacy behavior (#29196)
* `#29222 <https://github.com/numpy/numpy/pull/29222>`__: TYP: Backport typing fixes
* `#29233 <https://github.com/numpy/numpy/pull/29233>`__: BUG: avoid negating unsigned integers in resize implementation...
* `#29234 <https://github.com/numpy/numpy/pull/29234>`__: TST: Fix test that uses uninitialized memory (#29232)
* `#29235 <https://github.com/numpy/numpy/pull/29235>`__: BUG: Address interaction between SME and FPSR (#29223)
* `#29237 <https://github.com/numpy/numpy/pull/29237>`__: BUG: Enforce integer limitation in concatenate (#29231)
* `#29238 <https://github.com/numpy/numpy/pull/29238>`__: CI: Add support for building NumPy with LLVM for Win-ARM64
* `#29241 <https://github.com/numpy/numpy/pull/29241>`__: ENH: Detect CPU features on OpenBSD ARM and PowerPC64
* `#29242 <https://github.com/numpy/numpy/pull/29242>`__: ENH: Detect CPU features on FreeBSD / OpenBSD RISC-V64.