Suppress integer division by zero warnings by using floating-point

literals.  Introduced by glibc-rh1409611.patch.

diff --git a/sysdeps/ieee754/dbl-64/e_log.c b/sysdeps/ieee754/dbl-64/e_log.c

index 930aa0eed8ec7818..e3e0eda594735f62 100644

--- a/sysdeps/ieee754/dbl-64/e_log.c

+++ b/sysdeps/ieee754/dbl-64/e_log.c

@@ -78,9 +78,9 @@ __ieee754_log(double x) {

   n=0;

   if (__builtin_expect(ux < 0x00100000, 0)) {

     if (__builtin_expect(((ux & 0x7fffffff) | dx) == 0, 0))

-      return MHALF/0; /* return -INF */

+      return MHALF/0.0; /* return -INF */

     if (__builtin_expect(ux < 0, 0))

-      return (x-x)/0;                         /* return NaN  */

+      return (x-x)/0.0;                         /* return NaN  */

     n -= 54;    x *= two54.d;                              /* scale x     */

     num.d = x;

   }