NumPy 1.14.4 Release Notes

This is a bugfix release for bugs reported following the 1.14.3 release. The most significant fixes are:

• fixes for compiler instruction reordering that resulted in NaN’s not being properly propagated in np.max and np.min,

• fixes for bus faults on SPARC and older ARM due to incorrect alignment checks.

There are also improvements to printing of long doubles on PPC platforms. All is not yet perfect on that platform, the whitespace padding is still incorrect and is to be fixed in numpy 1.15, consequently NumPy still fails some printing-related (and other) unit tests on ppc systems. However, the printed values are now correct.

Note that NumPy will error on import if it detects incorrect float32 dot results. This problem has been seen on the Mac when working in the Anaconda environment and is due to a subtle interaction between MKL and PyQt5. It is not strictly a NumPy problem, but it is best that users be aware of it. See the gh-8577 NumPy issue for more information.

The Python versions supported in this release are 2.7 and 3.4 - 3.6. The Python 3.6 wheels available from PIP are built with Python 3.6.2 and should be compatible with all previous versions of Python 3.6. The source releases were cythonized with Cython 0.28.2 and should work for the upcoming Python 3.7.

Contributors

A total of 7 people contributed to this release. People with a “+” by their names contributed a patch for the first time.

• Allan Haldane

• Charles Harris

• Marten van Kerkwijk

• Matti Picus

• Pauli Virtanen

• Ryan Soklaski +

• Sebastian Berg

Pull requests merged

A total of 11 pull requests were merged for this release.

• #11104: BUG: str of DOUBLE_DOUBLE format wrong on ppc64

• #11170: TST: linalg: add regression test for gh-8577

• #11174: MAINT: add sanity-checks to be run at import time

• #11181: BUG: void dtype setup checked offset not actual pointer for alignment

• #11194: BUG: Python2 doubles don’t print correctly in interactive shell.

• #11198: BUG: optimizing compilers can reorder call to npy_get_floatstatus

• #11199: BUG: reduce using SSE only warns if inside SSE loop

• #11203: BUG: Bytes delimiter/comments in genfromtxt should be decoded

• #11211: BUG: Fix reference count/memory leak exposed by better testing

• #11219: BUG: Fixes einsum broadcasting bug when optimize=True

• #11251: DOC: Document 1.14.4 release.