Merge pull request #7167 from anntzer/fix-normalize-test-on-quadruple-precision

tacaswell · tacaswell · commit 2e12ac9ff5e3 · 2016-09-24T14:30:52.000-04:00
TST: Less stringent normalization test for float128.
diff --git a/lib/matplotlib/tests/test_colors.py b/lib/matplotlib/tests/test_colors.py
@@ -207,7 +207,9 @@ def test_Normalize():
     # and for scalar ones.
     eps = np.finfo(np.longdouble).resolution
     norm = plt.Normalize(1, 1 + 100 * eps)
-    assert_equal(norm(1 + 50 * eps), .5)
+    # This returns exactly 0.5 when longdouble is extended precision (80-bit),
+    # but only a value close to it when it is quadruple precision (128-bit).
+    assert 0 < norm(1 + 50 * eps) < 1
 
 
 def test_SymLogNorm():
