From 12a30bc1aa0586308bf3fe12c915bcc5e54a032f Mon Sep 17 00:00:00 2001 From: Sergey B Kirpichev Date: Sun, 12 Nov 2023 03:53:41 +0300 Subject: gh-111933: fix broken link to A.Neumaier article (gh-111937) --- Python/bltinmodule.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c index c373585..a1ecdcb 100644 --- a/Python/bltinmodule.c +++ b/Python/bltinmodule.c @@ -2611,7 +2611,10 @@ builtin_sum_impl(PyObject *module, PyObject *iterable, PyObject *start) } if (PyFloat_CheckExact(item)) { // Improved Kahan–Babuška algorithm by Arnold Neumaier - // https://www.mat.univie.ac.at/~neum/scan/01.pdf + // Neumaier, A. (1974), Rundungsfehleranalyse einiger Verfahren + // zur Summation endlicher Summen. Z. angew. Math. Mech., + // 54: 39-51. https://doi.org/10.1002/zamm.19740540106 + // https://en.wikipedia.org/wiki/Kahan_summation_algorithm#Further_enhancements double x = PyFloat_AS_DOUBLE(item); double t = f_result + x; if (fabs(f_result) >= fabs(x)) { -- cgit v0.12