[SciPy-user] Incorrect results in linalg.solve and friends

Pearu Peterson pearu at scipy.org
Mon Feb 23 17:04:36 CST 2004


On Sun, 22 Feb 2004, Pearu Peterson wrote:

> This is heads-up for linalg crunchers. Incorrect results appear when
> the following condition holds:
>   an input array is a *slice* of a complex array.

More accurate condition for the bug to show up is:

   an input array is an one-dimensional slice of a complex array

> This gives a workaround to avoid this problem until it gets resolved.
> Also, this is not due to some bug in Atlas but rather of copy_ND_array in
> fortranobject.c or of PyArray_CopyFromObject, but most probably of
> copy_ND_array.

This issue is now resolved. Upgrading f2py to the latest is highly
recommended, especially when computations use complex inputs to f2py
generated wrapper functions.


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