Move _dl_important_hwcaps to dl-hwcaps.c

[platform/upstream/glibc.git] / math / s_casinhf.c

diff --git a/math/s_casinhf.c b/math/s_casinhf.c
index f545d8e..c7098ef 100644 (file)
--- a/math/s_casinhf.c
+++ b/math/s_casinhf.c
@@ -1,5 +1,5 @@
 /* Return arc hyperbole sine for float value.
-   Copyright (C) 1997, 2011 Free Software Foundation, Inc.
+   Copyright (C) 1997-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -14,9 +14,8 @@
    Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
 
 #include <complex.h>
 #include <math.h>
@@ -74,6 +73,11 @@ __casinhf (__complex__ float x)
       __imag__ y += __imag__ x;
 
       res = __clogf (y);
+
+      /* Ensure zeros have correct sign and results are correct if
+        very close to branch cuts.  */
+      __real__ res = __copysignf (__real__ res, __real__ x);
+      __imag__ res = __copysignf (__imag__ res, __imag__ x);
     }
 
   return res;