[PATCH, testsuite]: Add dg-add-options ieee to gcc.dg/pr59833.c

[Uros Bizjak]

Some targets need additional options to handle NaNs.

2016-07-29  Uros Bizjak  <ubiz...@gmail.com>

    * gcc.dg/pr59833.c: Use dg-add-options ieee.

Tested on alpha-linux-gnu and x86_64-linux-gnu.

Committed to mainline SVN.

Uros.

Index: gcc.dg/pr59833.c
===================================================================
--- gcc.dg/pr59833.c    (revision 238862)
+++ gcc.dg/pr59833.c    (working copy)
@@ -1,5 +1,6 @@
 /* { dg-do run { target { *-*-linux* *-*-gnu* } } } */
 /* { dg-options "-O0 -lm" } */
+/* { dg-add-options ieee } */
 /* { dg-require-effective-target issignaling } */
 
 #define _GNU_SOURCE