--- a/libquadmath/math/fminq.c	Thu Oct 25 07:37:49 2018 +0900
+++ b/libquadmath/math/fminq.c	Thu Feb 13 11:34:05 2020 +0900
@@ -1,5 +1,5 @@
 /* Return minimum numeric value of X and Y.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997-2018 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -14,15 +14,20 @@
    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 "quadmath-imp.h"
 
-
 __float128
 fminq (__float128 x, __float128 y)
 {
-  return (__builtin_islessequal (x, y) || isnanq (y)) ? x : y;
+  if (__builtin_islessequal (x, y))
+    return x;
+  else if (__builtin_isgreater (x, y))
+    return y;
+  else if (issignalingq (x) || issignalingq (y))
+    return x + y;
+  else
+    return isnanq (y) ? x : y;
 }