8000 WIP: implement __rop__ logic for scalar operators by ewmoore · Pull Request #7459 · numpy/numpy · GitHub
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WIP: implement __rop__ logic for scalar operators #7459

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1163594
BUG: longdouble op None could cause infinite recursion
ewmoore Mar 31, 2016
f2fc804
ENH: implement __rop__ logic for mixed type scalar-scalar operators
ewmoore Apr 1, 2016
223ec73
ENH/BUG: try hard not to fall back to a ufunc call for scalar ops
ewmoore Apr 1, 2016
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12 changes: 12 additions & 0 deletions doc/release/1.12.0-notes.rst
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Expand Up @@ -81,6 +81,13 @@ The following functions are changed: ``sum``, ``product``,
The previous identity was 1, it is now -1. See entry in `Improvements`_ for
more explanation.

Scalar-Scalar power result type changed
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Raising an integer scalar to a negative integer power will always result in a
floating point scalar type. Previously when using mixed integer types an
integer type would be produced, while the pure type case produced a floating
point type.

FutureWarning to changed behavior
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Expand Down Expand Up @@ -175,6 +182,11 @@ The standard ``np.load``, ``np.save``, ``np.loadtxt``, ``np.savez``, and similar
functions can now take ``pathlib.Path`` objects as an argument instead of a
filename or open file object.

Mixed type scalar-scalar operators should be faster
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Rather than defering to the ufunc, mixed type scalar-scalar operators are
handled in the scalar operator resulting in a speedup.


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