Issue 1:
The test scipy.signal.tests.test_bsplines::TestBSplines::test_spline_filter fails on Windows 32-bit with Python3.4/2.7.

Probably just tolerance issue --- the test seems to be doing comparison vs. 0 with atol=0.

Error message:

https://ci.appveyor.com/project/scipy/scipy-wheels/build/1.0.143/job/m9vypcjy80ghxqcn

_______________________ TestBSplines.test_spline_filter _______________________
[gw1] win32 -- Python 3.4.4 C:\Python34\python.exe
self = <scipy.signal.tests.test_bsplines.TestBSplines object at 0x0C4B63F0>
def test_spline_filter(self):
np.random.seed(12457)
# Test the type-error branch
raises(TypeError, bsp.spline_filter, array([0]), 0)
# Test the complex branch
data_array_complex = np.random.rand(7, 7) + np.random.rand(7, 7)*1j
# make the magnitude exceed 1, and make some negative
data_array_complex = 10*(1+1j-2*data_array_complex)
result_array_complex = array(
[[-4.61489230e-01-1.92994022j, 8.33332443+6.25519943j,
6.96300745e-01-9.05576038j, 5.28294849+3.97541356j,
5.92165565+7.68240595j, 6.59493160-1.04542804j,
9.84503460-5.85946894j],
[-8.78262329-8.4295969j, 7.20675516+5.47528982j,
-8.17223072+2.06330729j, -4.38633347-8.65968037j,
9.89916801-8.91720295j, 2.67755103+8.8706522j,
6.24192142+3.76879835j],
[-3.15627527+2.56303072j, 9.87658501-0.82838702j,
-9.96930313+8.72288895j, 3.17193985+6.42474651j,
-4.50919819-6.84576082j, 5.75423431+9.94723988j,
9.65979767+6.90665293j],
[-8.28993416-6.61064005j, 9.71416473e-01-9.44907284j,
-2.38331890+9.25196648j, -7.08868170-0.77403212j,
4.89887714+7.05371094j, -1.37062311-2.73505688j,
7.70705748+2.5395329j],
[2.51528406-1.82964492j, 3.65885472+2.95454836j,
5.16786575-1.66362023j, -8.77737999e-03+5.72478867j,
4.10533333-3.10287571j, 9.04761887+1.54017115j,
-5.77960968e-01-7.87758923j],
[9.86398506-3.98528528j, -4.71444130-2.44316983j,
-1.68038976-1.12708664j, 2.84695053+1.01725709j,
1.14315915-8.89294529j, -3.17127085-5.42145538j,
1.91830420-6.16370344j],
[7.13875294+2.91851187j, -5.35737514+9.64132309j,
-9.66586399+0.70250005j, -9.87717438-2.0262239j,
9.93160629+1.5630846j, 4.71948051-2.22050714j,
9.49550819+7.8995142j]])
assert_allclose(bsp.spline_filter(data_array_complex, 0),
> result_array_complex)
E AssertionError:
E Not equal to tolerance rtol=1e-07, atol=0
E
E (mismatch 40.816326530612244%)
E x: array([[ -4.614889e-01-1.92994j , 8.333325e+00+6.255199j,
E 6.963016e-01-9.055761j, 5.282949e+00+3.975415j,
E 5.921656e+00+7.682406j, 6.594931e+00-1.045428j,...
E y: array([[ -4.614892e-01-1.92994j , 8.333324e+00+6.255199j,
E 6.963007e-01-9.05576j , 5.282948e+00+3.975414j,
E 5.921656e+00+7.682406j, 6.594932e+00-1.045428j,...
data_array_complex = array([[ -4.63309868e-01-1.92958424j, 8.33391188e+00+6.25427956j,
6.97289972e-01-9.05582857j, 5.28390748....0262238j ,
9.93160613e+00+1.56308421j, 4.71948116e+00-2.22050722j,
9.49551018e+00+7.89951507j]])
result_array_complex = array([[ -4.61489230e-01-1.92994022j, 8.33332443e+00+6.25519943j,
6.96300745e-01-9.05576038j, 5.28294849....0262239j ,
9.93160629e+00+1.5630846j , 4.71948051e+00-2.22050714j,
9.49550819e+00+7.8995142j ]])
self = <scipy.signal.tests.test_bsplines.TestBSplines object at 0x0C4B63F0>
C:\Python34\lib\site-packages\scipy\signal\tests\test_bsplines.py:60: AssertionError

Scipy/Numpy/Python version information:

Numpy 1.13.1, Scipy 6421d63

Issue 2:
_______________________ TestBSplines.test_spline_filter ________________________

[snip]

> raise AssertionError(msg)
E AssertionError:
E Not equal to tolerance rtol=1e-07, atol=0
E
E (mismatch 100.0%)
E x: array([[ -4.61489439e-01-1.92994106j, 8.33332348e+00+6.25519848j,
E 6.96301341e-01-9.05576134j, 5.28294897e+00+3.97541451j,
E 5.92165613e+00+7.68240595j, 6.59493113e+00-1.04542828j,...
E y: array([[ -4.61489230e-01-1.92994022j, 8.33332443e+00+6.25519943j,
E 6.96300745e-01-9.05576038j, 5.28294849e+00+3.97541356j,
E 5.92165565e+00+7.68240595j, 6.59493160e+00-1.04542804j,...

https://travis-ci.org/MacPython/scipy-wheels/jobs/409327647

Detected on scipy-wheels build matrix. First failure on this test on 21 July:

https://travis-ci.org/MacPython/scipy-wheels/builds/406631499

Previous test was July 14th, no failure (on this test).

https://travis-ci.org/MacPython/scipy-wheels/builds/403942847