Merge pull request #4809 from argriffing/cauchy-moments

MAINT: cauchy moments are undefined
scipy · Aug 25, 2015 · 7fe3d47 · 7fe3d47
2 parents 5c9f1cf + 7a95782
commit 7fe3d47
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diff --git a/scipy/stats/_continuous_distns.py b/scipy/stats/_continuous_distns.py
@@ -732,7 +732,7 @@ def _isf(self, q):
         return tan(pi/2.0-pi*q)
 
     def _stats(self):
-        return inf, inf, nan, nan
+        return nan, nan, nan, nan
 
     def _entropy(self):
         return log(4*pi)

diff --git a/scipy/stats/tests/test_continuous_basic.py b/scipy/stats/tests/test_continuous_basic.py
@@ -229,9 +229,9 @@ def test_moments():
 
 def check_sample_meanvar_(distfn, arg, m, v, sm, sv, sn, msg):
     # this did not work, skipped silently by nose
-    if not np.isinf(m):
+    if np.isfinite(m):
         check_sample_mean(sm, sv, sn, m)
-    if not np.isinf(v):
+    if np.isfinite(v):
         check_sample_var(sv, sn, v)