[tests/tset_ld.c] Fixed a loop in case an extended range is used

(there are issues on a NetBSD machine, and this could be a cause).

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@10819 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 7 insertions, 5 deletions

diff --git a/tests/tset_ld.c b/tests/tset_ld.c
index 99b65d11c..3b73c3fae 100644
--- a/tests/tset_ld.c
+++ b/tests/tset_ld.c
@@ -370,15 +370,17 @@ static void
 bug_20160907 (void)
 {
 #if HAVE_LDOUBLE_IEEE_EXT_LITTLE
-  long double dn = 1.0, ld;
+  long double dn, ld, t = 1.0;
   mpfr_t mp;
-  long e = 0;
+  long e = 1;
 
-  while (dn * (long double) 0.5 != 0)
+  do
     {
-      dn = dn * (long double) 0.5;
-      e --;
+      e--;
+      dn = t;
+      t = dn * (long double) 0.5;
     }
+  while (t != 0);
   /* dn=2^e is now the smallest subnormal */
 
   mpfr_init2 (mp, 64);