[Numpy-discussion] Is this a bug in numpy.distutils ?

Charles R Harris charlesr.harris@gmail....
Tue Aug 4 12:16:28 CDT 2009


On Tue, Aug 4, 2009 at 10:51 AM, Dave <dave.hirschfeld@gmail.com> wrote:

> David Cournapeau <cournape <at> gmail.com> writes:
>
> >
> > On Tue, Aug 4, 2009 at 8:13 PM, David
> > Cournapeau<david <at> ar.media.kyoto-u.ac.jp> wrote:
> >
> > > I think I understand the problem. Unfortunately, that's looks tricky to
> > > solve... I hate distutils.
> >
> > Ok - should be fixed in r7281.
> >
> > David
> >
>
> Well, that seemed to fix the bdist_wininst issue.
>
> The problem compiling scipy remains, but I assume that's probably something
> I
> should take up on the scipy list?
>
> FWIW running the full numpy test suite (verbose=10) I get 7 failures. The
> results are available from http://pastebin.com/m5505d4b5
>
> The "errors" seem to be be related to the NaN handling.
>

The nan problems come from these  tests:

   # atan2(+-infinity, -infinity) returns +-3*pi/4.
    yield assert_almost_equal, ncu.arctan2( np.inf, -np.inf),  0.75 * np.pi
    yield assert_almost_equal, ncu.arctan2(-np.inf, -np.inf), -0.75 * np.pi

   # atan2(+-infinity, +infinity) returns +-pi/4.
    yield assert_almost_equal, ncu.arctan2( np.inf, np.inf),  0.25 * np.pi
    yield assert_almost_equal, ncu.arctan2(-np.inf, np.inf), -0.25 * np.pi

So the problem seems to be with the inf handling. Windows arctan2 is known
to be wtf-buggy and I suspect that is what is being tested.

Chuck
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