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Rename math.sum to math.fsum

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This commit is contained in:
Mark Dickinson 2008-07-30 16:20:10 +00:00
parent f2eb2b44fc
commit fef6b13c32
5 changed files with 35 additions and 35 deletions
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14
Lib/test/test_math.py
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@ -646,10 +646,10 @@ class MathTests(unittest.TestCase):
self.assert_(math.isnan(math.sqrt(NAN)))
def testSum(self):
# math.sum relies on exact rounding for correct operation.
# math.fsum relies on exact rounding for correct operation.
# There's a known problem with IA32 floating-point that causes
# inexact rounding in some situations, and will cause the
# math.sum tests below to fail; see issue #2937. On non IEEE
# math.fsum tests below to fail; see issue #2937. On non IEEE
# 754 platforms, and on IEEE 754 platforms that exhibit the
# problem described in issue #2937, we simply skip the whole
# test.
@ -662,7 +662,7 @@ class MathTests(unittest.TestCase):
if 1e16+2.0 != 1e16+2.9999:
return
# Python version of math.sum, for comparison. Uses a
# Python version of math.fsum, for comparison. Uses a
# different algorithm based on frexp, ldexp and integer
# arithmetic.
from sys import float_info
@ -719,13 +719,13 @@ class MathTests(unittest.TestCase):
for i, (vals, expected) in enumerate(test_values):
try:
actual = math.sum(vals)
actual = math.fsum(vals)
except OverflowError:
self.fail("test %d failed: got OverflowError, expected %r "
"for math.sum(%.100r)" % (i, expected, vals))
"for math.fsum(%.100r)" % (i, expected, vals))
except ValueError:
self.fail("test %d failed: got ValueError, expected %r "
"for math.sum(%.100r)" % (i, expected, vals))
"for math.fsum(%.100r)" % (i, expected, vals))
self.assertEqual(actual, expected)
from random import random, gauss, shuffle
@ -739,7 +739,7 @@ class MathTests(unittest.TestCase):
shuffle(vals)
s = msum(vals)
self.assertEqual(msum(vals), math.sum(vals))
self.assertEqual(msum(vals), math.fsum(vals))
def testTan(self):