TST: check for tanh(1000+0j) == 1 + 0j etc.

ewmoore · ewmoore · commit e61e74f2bd17 · 2014-02-26T18:11:27.000-05:00
This is a test for the fix for numpygh-2321.
diff --git a/numpy/core/tests/test_umath_complex.py b/numpy/core/tests/test_umath_complex.py
@@ -517,6 +517,16 @@ def test_special_values(self):
         yield check_real_value, ncu._arg, np.nan, np.inf, np.nan, False
         yield check_real_value, ncu._arg, np.inf, np.nan, np.nan, False
 
+class TestCtan(object):
+    def test_simple(self):
+        check_complex_value(ncu.tan, 0, 1000, 0, 1, True)
+        check_complex_value(ncu.tan, 0, -1000, 0, -1, True)
+
+class TestCtanh(object):
+    def test_simple(self):
+        check_complex_value(ncu.tanh, 1000, 0, 1, 0, True)
+        check_complex_value(ncu.tanh, -1000, 0, -1, 0, True)
+
 def check_real_value(f, x1, y1, x, exact=True):
     z1 = np.array([complex(x1, y1)])
     if exact:
