diff options
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/e_logl.c | 2 |
2 files changed, 6 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog index 1c7b198d54..ec8807cfac 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,10 @@ 2015-12-09 Joseph Myers <joseph@codesourcery.com> + [BZ #19351] + * sysdeps/ieee754/ldbl-128ibm/e_logl.c (__ieee754_logl): When + expanding log(1+z), compare z rather than its square with epsilon + to determine when to avoid evaluating the expansion. + [BZ #19350] * sysdeps/ieee754/ldbl-128ibm/e_sinhl.c (__ieee754_sinhl): Increase overflow threshold. diff --git a/sysdeps/ieee754/ldbl-128ibm/e_logl.c b/sysdeps/ieee754/ldbl-128ibm/e_logl.c index dcac38062c..14acfc2db7 100644 --- a/sysdeps/ieee754/ldbl-128ibm/e_logl.c +++ b/sysdeps/ieee754/ldbl-128ibm/e_logl.c @@ -270,7 +270,7 @@ __ieee754_logl(long double x) /* Series expansion of log(1+z). */ w = z * z; /* Avoid spurious underflows. */ - if (__glibc_unlikely(w <= ldbl_epsilon)) + if (__glibc_unlikely (fabsl (z) <= ldbl_epsilon)) y = 0.0L; else { |