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Commitf5b6029

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Fix mlab fallback for 32-bit systems
Unfortunately, I applied the change from#29115 (comment)directly without noticing the typo, or running full tests.So fix the swapped condition, and add a test (for `csd` only, whichshould be enough since everything goes though `_spectral_helper`.)
1 parent2b75c9e commitf5b6029

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2 files changed

+14
-11
lines changed

2 files changed

+14
-11
lines changed

‎lib/matplotlib/mlab.py

Lines changed: 2 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -212,16 +212,8 @@ def detrend_linear(y):
212212

213213

214214
def_stride_windows(x,n,noverlap=0):
215-
x=np.asarray(x)
216-
217215
_api.check_isinstance(Integral,n=n,noverlap=noverlap)
218-
ifnot (1<=n<=x.sizeandn<noverlap):
219-
raiseValueError(f'n ({n}) and noverlap ({noverlap}) must be positive integers '
220-
f'with n < noverlap and n <= x.size ({x.size})')
221-
222-
ifn==1andnoverlap==0:
223-
returnx[np.newaxis]
224-
216+
x=np.asarray(x)
225217
step=n-noverlap
226218
shape= (n, (x.shape[-1]-noverlap)//step)
227219
strides= (x.strides[0],step*x.strides[0])
@@ -257,7 +249,7 @@ def _spectral_helper(x, y=None, NFFT=None, Fs=None, detrend_func=None,
257249
ifNFFTisNone:
258250
NFFT=256
259251

260-
ifnoverlap>=NFFT:
252+
ifnot (0<=noverlap<NFFT):
261253
raiseValueError('noverlap must be less than NFFT')
262254

263255
ifmodeisNoneormode=='default':

‎lib/matplotlib/tests/test_mlab.py

Lines changed: 12 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,5 @@
1+
importsys
2+
13
fromnumpy.testingimport (assert_allclose,assert_almost_equal,
24
assert_array_equal,assert_array_almost_equal_nulp)
35
importnumpyasnp
@@ -429,7 +431,16 @@ def test_spectral_helper_psd(self, mode, case):
429431
assertspec.shape[0]==freqs.shape[0]
430432
assertspec.shape[1]==getattr(self,f"t_{case}").shape[0]
431433

432-
deftest_csd(self):
434+
@pytest.mark.parametrize('bitsize', [
435+
pytest.param(None,id='default'),
436+
pytest.param(32,
437+
marks=pytest.mark.skipif(sys.maxsize<=2**32,
438+
reason='System is already 32-bit'),
439+
id='32-bit')
440+
])
441+
deftest_csd(self,bitsize,monkeypatch):
442+
ifbitsizeisnotNone:
443+
monkeypatch.setattr(sys,'maxsize',2**bitsize)
433444
freqs=self.freqs_density
434445
spec,fsp=mlab.csd(x=self.y,y=self.y+1,
435446
NFFT=self.NFFT_density,

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