From cc858ccc500cf1606f64fc6cc47ab8af230c89e6 Mon Sep 17 00:00:00 2001 From: Raymond Hettinger Date: Fri, 23 May 2008 00:49:27 +0000 Subject: [PATCH] Docs for Issue 2819. --- Doc/library/math.rst | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Doc/library/math.rst b/Doc/library/math.rst index 9bccf5dcd6..b98f1649a3 100644 --- a/Doc/library/math.rst +++ b/Doc/library/math.rst @@ -103,6 +103,12 @@ Number-theoretic and representation functions: Return the fractional and integer parts of *x*. Both results carry the sign of *x*, and both are floats. +.. function:: sum(iterable) + + Return an accurate floating point sum of values in the iterable. Avoids + loss of precision by tracking multiple intermediate partial sums. The + algorithm's accuracy depends on IEEE-754 arithmetic guarantees and the + typical case where the rounding mode is half-even. .. function:: trunc(x) -- 2.50.0