/* Return arc hyperbole sine for float value.
- Copyright (C) 1997 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.
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>
+#include <math_private.h>
__complex__ float
__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;