diff options
| -rw-r--r-- | tests/tset_ld.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/tests/tset_ld.c b/tests/tset_ld.c index 7b878ccb9..37bb1aaa6 100644 --- a/tests/tset_ld.c +++ b/tests/tset_ld.c @@ -199,18 +199,21 @@ static void bug_20160907 (void) { #if HAVE_LDOUBLE_IEEE_EXT_LITTLE - long double dn, ld, t = 1.0; + long double dn, ld; mpfr_t mp; - long e = 1; - - do - { - e--; - dn = t; - t = dn * (long double) 0.5; - } - while (t != 0); - /* dn=2^e is now the smallest subnormal */ + long e; + mpfr_long_double_t x; + + /* the following is the encoding of the smallest subnormal number + for HAVE_LDOUBLE_IEEE_EXT_LITTLE */ + x.s.manl = 1; + x.s.manh = 0; + x.s.expl = 0; + x.s.exph = 0; + x.s.sign= 0; + dn = x.ld; + e = -16445; + /* dn=2^e is now the smallest subnormal. */ mpfr_init2 (mp, 64); mpfr_set_ui_2exp (mp, 1, e - 1, MPFR_RNDN); |