diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-128/s_erfl.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128/s_erfl.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/sysdeps/ieee754/ldbl-128/s_erfl.c b/sysdeps/ieee754/ldbl-128/s_erfl.c index d9d4195ad2..ef65ed8922 100644 --- a/sysdeps/ieee754/ldbl-128/s_erfl.c +++ b/sysdeps/ieee754/ldbl-128/s_erfl.c @@ -96,6 +96,7 @@ * erfc/erf(NaN) is NaN */ +#include <errno.h> #include <math.h> #include <math_private.h> @@ -918,14 +919,22 @@ __erfcl (long double x) r = __ieee754_expl (-z * z - 0.5625) * __ieee754_expl ((z - x) * (z + x) + p); if ((sign & 0x80000000) == 0) - return r / x; + { + long double ret = r / x; + if (ret == 0) + __set_errno (ERANGE); + return ret; + } else return two - r / x; } else { if ((sign & 0x80000000) == 0) - return tiny * tiny; + { + __set_errno (ERANGE); + return tiny * tiny; + } else return two - tiny; } |