1 files changed, 2 insertions, 0 deletions
diff --git a/NEWS b/NEWS
index 22494bec25..06b265a45b 100644
--- a/NEWS
+++ b/NEWS
@@ -54,6 +54,8 @@ with all sufficient information, see the ChangeLog file.
     * Math.log now raises Math::DomainError instead of returning NaN if the
       base is less than 0, and returns NaN instead of -infinity if both of
       two arguments are 0.
+    * Math.atan2 now returns values like as expected by C99 if both two
+      arguments are infinity.
 
 * Proc
   * incompatible changes: