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Replace math.sum with math.fsum in a couple of comments 

that were missed by r65308
This commit is contained in:
Mark Dickinson 2008-07-30 16:25:16 +00:00
parent fef6b13c32
commit ff3fdce0d2
1 changed files with 2 additions and 2 deletions
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Modules/mathmodule.c
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@ -341,7 +341,7 @@ FUNC1(tanh, tanh, 0,
Note 4: A similar implementation is in Modules/cmathmodule.c.
Be sure to update both when making changes.
Note 5: The signature of math.sum() differs from __builtin__.sum()
Note 5: The signature of math.fsum() differs from __builtin__.sum()
because the start argument doesn't make sense in the context of
accurate summation. Since the partials table is collapsed before
returning a result, sum(seq2, start=sum(seq1)) may not equal the
@ -506,7 +506,7 @@ math_fsum(PyObject *self, PyObject *seq)
Needed so that sum([1e-16, 1, 1e16]) will round-up the last
digit to two instead of down to zero (the 1e-16 makes the 1
slightly closer to two). With a potential 1 ULP rounding
error fixed-up, math.sum() can guarantee commutativity. */
error fixed-up, math.fsum() can guarantee commutativity. */
if (n > 0 && ((lo < 0.0 && p[n-1] < 0.0) ||
(lo > 0.0 && p[n-1] > 0.0))) {
y = lo * 2.0;