[pypy-issue] [issue976] Implement numpypy.cross()

[mikefc]

mikefc <coolbutuseless at gmail.com> added the comment:

I've had a go at implementing this with applevel code. Patch attached.

Note that the whole things is really a cut and paste from actual 
numpy/core/numeric.py with some slight changes because we don't have a few 
functions.

The main change is that it only works on 1-d arrays as we don't have a swapaxes() 
method yet.  We're also missing an ndim() method.

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nosy: +mikefc
status: unread -> chatting

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