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Issue #9186: log1p(-1.0) should raise ValueError, not OverflowError.

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This commit is contained in:
Mark Dickinson 2010-07-07 16:21:29 +00:00
parent 9c91eb844c
commit be64d95169
4 changed files with 75 additions and 9 deletions
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8
Lib/test/test_math.py
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@ -647,15 +647,7 @@ class MathTests(unittest.TestCase):
def testLog1p(self):
self.assertRaises(TypeError, math.log1p)
self.ftest('log1p(1/e -1)', math.log1p(1/math.e-1), -1)
self.ftest('log1p(0)', math.log1p(0), 0)
self.ftest('log1p(e-1)', math.log1p(math.e-1), 1)
self.ftest('log1p(1)', math.log1p(1), math.log(2))
self.assertEquals(math.log1p(INF), INF)
self.assertRaises(ValueError, math.log1p, NINF)
self.assertTrue(math.isnan(math.log1p(NAN)))
n= 2**90
self.assertAlmostEquals(math.log1p(n), 62.383246250395075)
self.assertAlmostEquals(math.log1p(n), math.log1p(float(n)))
def testLog10(self):