From 38bbc4888a1fcbcedd7eb8b83ac4b070f2aeb5f2 Mon Sep 17 00:00:00 2001
From: Mark Dickinson <dickinsm@gmail.com>
Date: Wed, 16 Jul 2008 11:32:23 +0000
Subject: Merged revisions 64981 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r64981 | mark.dickinson | 2008-07-15 22:55:23 +0100 (Tue, 15 Jul 2008) | 4 lines
Fix float.from_hex tests. It appears that Linux/ia64 doesn't like
computing 2.0**-1074 accurately. Using ldexp(1.0, -1074) should be
safer.
........
---
Lib/test/test_float.py | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/Lib/test/test_float.py b/Lib/test/test_float.py
index 9b84531..7de5320 100644
--- a/Lib/test/test_float.py
+++ b/Lib/test/test_float.py
@@ -377,10 +377,10 @@ class HexFloatTestCase(unittest.TestCase):
self.fail('%r not identical to %r' % (x, y))
def test_ends(self):
- self.identical(self.MIN, 2.**-1022)
- self.identical(self.TINY, 2.**-1074)
- self.identical(self.EPS, 2.**-52)
- self.identical(self.MAX, 2.*(2.**1023 - 2.**970))
+ self.identical(self.MIN, ldexp(1.0, -1022))
+ self.identical(self.TINY, ldexp(1.0, -1074))
+ self.identical(self.EPS, ldexp(1.0, -52))
+ self.identical(self.MAX, 2.*(ldexp(1.0, 1023) - ldexp(1.0, 970)))
def test_invalid_inputs(self):
invalid_inputs = [
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