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Added math.isinf() and math.isnan()

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This commit is contained in:
Christian Heimes 2008-01-03 20:23:15 +00:00
parent ae04c3356e
commit e2ca4245c9
4 changed files with 69 additions and 6 deletions
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16
Lib/test/test_math.py
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@ -229,6 +229,22 @@ class MathTests(unittest.TestCase):
self.ftest('tanh(0)', math.tanh(0), 0)
self.ftest('tanh(1)+tanh(-1)', math.tanh(1)+math.tanh(-1), 0)
def testIsnan(self):
self.assert_(math.isnan(float("nan")))
self.assert_(math.isnan(float("inf")* 0.))
self.failIf(math.isnan(float("inf")))
self.failIf(math.isnan(0.))
self.failIf(math.isnan(1.))
def testIsinf(self):
self.assert_(math.isinf(float("inf")))
self.assert_(math.isinf(float("-inf")))
self.assert_(math.isinf(1E400))
self.assert_(math.isinf(-1E400))
self.failIf(math.isinf(float("nan")))
self.failIf(math.isinf(0.))
self.failIf(math.isinf(1.))
# RED_FLAG 16-Oct-2000 Tim
# While 2.0 is more consistent about exceptions than previous releases, it
# still fails this part of the test on some platforms. For now, we only