Smack: add the execute lable to ldconfig

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

diff --git a/math/s_fdimf.c b/math/s_fdimf.c
index 2f3ce30..5429303 100644 (file)
--- a/math/s_fdimf.c
+++ b/math/s_fdimf.c
@@ -1,5 +1,5 @@
 /* Return positive difference between arguments.
-   Copyright (C) 1997, 2004 Free Software Foundation, Inc.
+   Copyright (C) 1997-2015 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -14,10 +14,10 @@
    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 <errno.h>
 #include <math.h>
 
 float
@@ -26,11 +26,18 @@ __fdimf (float x, float y)
   int clsx = fpclassify (x);
   int clsy = fpclassify (y);
 
-  if (clsx == FP_NAN || clsy == FP_NAN
-      || (y < 0 && clsx == FP_INFINITE && clsy == FP_INFINITE))
-    /* Raise invalid flag.  */
+  if (clsx == FP_NAN || clsy == FP_NAN)
+    /* Raise invalid flag for signaling but not quiet NaN.  */
     return x - y;
 
-  return x <= y ? 0 : x - y;
+  if (x <= y)
+    return 0.0f;
+
+  float r = x - y;
+  if (fpclassify (r) == FP_INFINITE
+      && clsx != FP_INFINITE && clsy != FP_INFINITE)
+    __set_errno (ERANGE);
+
+  return r;
 }
 weak_alias (__fdimf, fdimf)