Rename math.sum to math.fsum

2 files changed, 11 insertions, 11 deletions

diff --git a/Doc/library/math.rst b/Doc/library/math.rst
index 61a6fd6..5740759 100644
--- a/Doc/library/math.rst
+++ b/Doc/library/math.rst
@@ -83,6 +83,16 @@ Number-theoretic and representation functions:
    apart" the internal representation of a float in a portable way.
 
 
+.. function:: fsum(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.
+
+   .. versionadded:: 2.6
+
+
 .. function:: isinf(x)
 
    Checks if the float *x* is positive or negative infinite.
@@ -112,16 +122,6 @@ Number-theoretic and representation functions:
    *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.
-
-   .. versionadded:: 2.6
-
-
 .. function:: trunc(x)
 
    Return the :class:`Real` value *x* truncated to an :class:`Integral` (usually
diff --git a/Doc/whatsnew/2.6.rst b/Doc/whatsnew/2.6.rst
index a8d89cb..9959ecd 100644
--- a/Doc/whatsnew/2.6.rst
+++ b/Doc/whatsnew/2.6.rst
@@ -1537,7 +1537,7 @@ Here are all of the changes that Python 2.6 makes to the core Python language.
   * :func:`~math.factorial` computes the factorial of a number.
     (Contributed by Raymond Hettinger; :issue:`2138`.)
 
-  * :func:`~math.sum` adds up the stream of numbers from an iterable,
+  * :func:`~math.fsum` adds up the stream of numbers from an iterable,
     and is careful to avoid loss of precision by calculating partial sums.
     (Contributed by Jean Brouwers, Raymond Hettinger, and Mark Dickinson;
     :issue:`2819`.)