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Use ldexp(q, exp) instead of q*2.**exp in true division test, to avoid bogus failures on platforms with broken pow (e.g., Ubuntu/ia64).

This commit is contained in:
Mark Dickinson 2009-12-27 16:16:02 +00:00
parent 4657283647
commit 4c96035f33
1 changed files with 2 additions and 1 deletions
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3
Lib/test/test_long_future.py
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@ -5,6 +5,7 @@ from __future__ import division
import sys import sys
import random import random
import math
import unittest import unittest
from test.test_support import run_unittest from test.test_support import run_unittest
@ -46,7 +47,7 @@ def truediv(a, b):
if 2*r > b or 2*r == b and q % 2 == 1: if 2*r > b or 2*r == b and q % 2 == 1:
q += 1 q += 1
result = float(q) * 2.**exp result = math.ldexp(float(q), exp)
return -result if negative else result return -result if negative else result
class TrueDivisionTests(unittest.TestCase): class TrueDivisionTests(unittest.TestCase):