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bpo-31373: remove overly strict float range checks (#3486)

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This undoes a853a8ba78 except for the pytime.c
parts. We want to continue to allow IEEE 754 doubles larger than FLT_MAX to be
rounded into finite floats. Tests were added to very this behavior.
This commit is contained in:
Benjamin Peterson 2017-09-10 23:50:46 -07:00 • committed by GitHub
parent 252033d50e
commit 2bb69a5b4e
4 changed files with 14 additions and 6 deletions
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6
Lib/test/test_getargs2.py
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@ -377,6 +377,12 @@ class Float_TestCase(unittest.TestCase):
r = getargs_f(NAN)
self.assertNotEqual(r, r)
@support.requires_IEEE_754
def test_f_rounding(self):
from _testcapi import getargs_f
self.assertEqual(getargs_f(3.40282356e38), FLT_MAX)
self.assertEqual(getargs_f(-3.40282356e38), -FLT_MAX)
def test_d(self):
from _testcapi import getargs_d
self.assertEqual(getargs_d(4.25), 4.25)