Description
Continuing to work through test failures that happen on Fedora's ppc64 (big-endian), but not on little-endian arches. The last twelve failures are all like this:
======================================================================
FAIL: test_psd_csd_equal (matplotlib.tests.test_mlab.spectral_testcase_Fs4_complex_defaultsided)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/builddir/build/BUILDROOT/python-matplotlib-2.0.0-0.7.rc2.fc26.ppc64/usr/lib64/python2.7/site-packages/matplotlib/tests/test_mlab.py", line 2096, in test_psd_csd_equal
assert_array_equal(Pxx, Pxy)
File "/usr/lib64/python2.7/site-packages/numpy/testing/utils.py", line 813, in assert_array_equal
verbose=verbose, header='Arrays are not equal')
File "/usr/lib64/python2.7/site-packages/numpy/testing/utils.py", line 739, in assert_array_compare
raise AssertionError(msg)
AssertionError:
Arrays are not equal
(mismatch 98.4375%)
x: array([ 6.851587e-11, 5.656909e-11, 6.650227e-11, 1.223443e-10,
1.294211e-10, 4.895139e-11, 4.816325e-11, 2.429269e-10,
3.889598e-10, 2.063253e-10, 1.297648e-11, 4.368301e-10,...
y: array([ 6.851587e-11 +0.000000e+00j, 5.656909e-11 -7.521779e-30j,
6.650227e-11 +3.815069e-29j, 1.223443e-10 +8.121089e-30j,
1.294211e-10 -5.664577e-29j, 4.895139e-11 +1.171260e-28j,...
The twelve classes which fail are:
spectral_testcase_Fs4_complex_defaultsided
spectral_testcase_Fs4_complex_onesided
spectral_testcase_Fs4_complex_twosided
spectral_testcase_Fs4_real_defaultsided
spectral_testcase_Fs4_real_onesided
spectral_testcase_Fs4_real_twosided
spectral_testcase_FsAll_complex_defaultsided
spectral_testcase_FsAll_complex_onesided
spectral_testcase_FsAll_complex_twosided
spectral_testcase_FsAll_real_defaultsided
spectral_testcase_FsAll_real_onesided
spectral_testcase_FsAll_real_twosided
AFAICS, it's all the classes that specify fstims as something other than an empty list in their self.createStim call. All the ones that specify it as an empty list pass.
Obviously for each failure the non-matching arrays are different, but the general failure mode is the same - the values seem to be in some way the same, but the second array has these +foo and -foo bits in it that the first array doesn't. I've no idea what those mean. (To add to all my other admissions, this is the point where I admit I have a history degree and know sod all about math. :>)