Use Kahan's formula in cacosh

1 files changed, 7 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 1ccc3ddab0..4d2b1fcc98 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2011-12-21  Ulrich Drepper  <drepper@gmail.com>
+
+	* math/s_cacosh.c: Use Kahan's formula if the subtraction could lead
+	to large cancellation.
+	* math/s_cacoshf.c: Likewise.
+	* math/s_cacoshl.c: Likewise.
+
 2011-11-18  Richard B. Kreckel  <kreckel@ginac.de>
 
 	[BZ #13305]