From: Raymond Hettinger <rhettinger@users.noreply.github.com>
Date: Tue, 21 Mar 2023 05:02:14 +0000 (-0500)
Subject: The pow() variant further improves accuracy (GH-102866)
X-Git-Tag: v3.12.0a7~119
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1a5a14183ec807ead1c6a46464540159124e5260;p=thirdparty%2FPython%2Fcpython.git

The pow() variant further improves accuracy (GH-102866)
---

diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst
index 2427a8d85f84..78f64ea67e25 100644
--- a/Doc/library/itertools.rst
+++ b/Doc/library/itertools.rst
@@ -876,7 +876,7 @@ which incur interpreter overhead.
        n = len(coefficients)
        if n == 0:
            return x * 0  # coerce zero to the type of x
-       powers = accumulate(repeat(x, n - 1), operator.mul, initial=1)
+       powers = map(pow, repeat(x), range(n))
        return math.sumprod(reversed(coefficients), powers)
 
    def polynomial_from_roots(roots):