Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and
negative; fix to return an (appropriately signed) zero instead.
diff --git a/Misc/NEWS b/Misc/NEWS
index 12522db..2b7b52f 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -23,6 +23,11 @@
Library
-------
+- Issue #2487: change the semantics of math.ldexp(x, n) when n is too
+ large to fit in a C long. ldexp(x, n) now returns a zero (with
+ suitable sign) if n is large and negative; previously, it raised
+ OverflowError.
+
- The toaiff module has been deprecated for removal in Python 3.0.
- The test.testall module has been deprecated for removal in Python 3.0.