On 2015-09-24 00:17:33, Jens Jørgen Mortensen <je...@fysik.dtu.dk> wrote:
> jensj@jordan:~$ python
> Python 2.7.9 (default, Apr 2 2015, 15:33:21)
> [GCC 4.9.2] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import numpy as np
> >>> a = np.zeros((2, 2, 2))
> >>> b = np.zeros((2, 2, 2))
> >>> a[0, 0] = 7
> >>> b[0, 0] = 6
> >>> np.vdot(a[:, :, 0], b[:, :, 0]).real
> 84.0
> >>> np.__version__
> '1.10.0rc1'
>
> The result should be 42. This is on Ubuntu 15.04.
The input is not supposed to be matrices—but the docstring specifically
states that those should then be ravelled, so this is indeed a bug.
If I bisected correctly, the problematic change is this one:
commit 44877b36870ec2a0505c536a30b9fbf06a414c17
Author: Sebastian Berg <sebast...@sipsolutions.net>
Date: Wed Sep 3 18:33:06 2014 +0200
ENH: Allow ravel to reshape in place when possible
This fixes a lot of corner cases in reshape 'K' when the array
is not contiguous in the first place, it was previously never
ravelled in place.
Closes gh-5033
Stéfan
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