diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | NEWS | 2 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-128/e_expl.c | 10 |
3 files changed, 16 insertions, 2 deletions
@@ -1,3 +1,9 @@ +2015-06-24 Joseph Myers <joseph@codesourcery.com> + + [BZ #18586] + * sysdeps/ieee754/ldbl-128/e_expl.c (__ieee754_expl): Force + underflow exception for small results. + 2015-06-24 Andrew Senkevich <andrew.senkevich@intel.com> * sysdeps/x86_64/fpu/Makefile (libmvec-support): Fixed files list. @@ -24,7 +24,7 @@ Version 2.22 18444, 18468, 18469, 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18507, 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532, 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, - 18547, 18553, 18558, 18569, 18583. + 18547, 18553, 18558, 18569, 18583, 18586. * Cache information can be queried via sysconf() function on s390 e.g. with _SC_LEVEL1_ICACHE_SIZE as argument. diff --git a/sysdeps/ieee754/ldbl-128/e_expl.c b/sysdeps/ieee754/ldbl-128/e_expl.c index b4b789658a..1cd095cb77 100644 --- a/sysdeps/ieee754/ldbl-128/e_expl.c +++ b/sysdeps/ieee754/ldbl-128/e_expl.c @@ -230,7 +230,15 @@ __ieee754_expl (long double x) if (!unsafe) return result; else - return result * scale_u.d; + { + result *= scale_u.d; + if (result < LDBL_MIN) + { + long double force_underflow = result * result; + math_force_eval (force_underflow); + } + return result; + } } /* Exceptional cases: */ else if (isless (x, himark)) |