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Issue 23229: add cmath.inf, cmath.nan, cmath.infj and cmath.nanj.

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Mark Dickinson 2016-08-29 13:56:58 +01:00
parent 8631da64bb
commit 84e6311dee
4 changed files with 103 additions and 0 deletions
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17
Lib/test/test_cmath.py
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@ -154,6 +154,23 @@ class CMathTests(unittest.TestCase):
self.assertAlmostEqual(cmath.e, e_expected, places=9,
msg="cmath.e is {}; should be {}".format(cmath.e, e_expected))
def test_infinity_and_nan_constants(self):
self.assertEqual(cmath.inf.real, math.inf)
self.assertEqual(cmath.inf.imag, 0.0)
self.assertEqual(cmath.infj.real, 0.0)
self.assertEqual(cmath.infj.imag, math.inf)
self.assertTrue(math.isnan(cmath.nan.real))
self.assertEqual(cmath.nan.imag, 0.0)
self.assertEqual(cmath.nanj.real, 0.0)
self.assertTrue(math.isnan(cmath.nanj.imag))
# Check consistency with reprs.
self.assertEqual(repr(cmath.inf), "inf")
self.assertEqual(repr(cmath.infj), "infj")
self.assertEqual(repr(cmath.nan), "nan")
self.assertEqual(repr(cmath.nanj), "nanj")
def test_user_object(self):
# Test automatic calling of __complex__ and __float__ by cmath
# functions