diff options
| -rw-r--r-- | ChangeLog | 4 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/e_sqrtl.c | 8 |
2 files changed, 7 insertions, 5 deletions
diff --git a/ChangeLog b/ChangeLog index b597ce9643..2516304de3 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2016-05-26 Joseph Myers <joseph@codesourcery.com> + [BZ #20153] + * sysdeps/ieee754/ldbl-128ibm/e_sqrtl.c (__ieee754_sqrtl): Return + x * x + x for infinities and NaNs. + [BZ #20151] * sysdeps/ieee754/ldbl-128/e_j0l.c (__ieee754_j0l): Add NaN argument to itself before returning result. diff --git a/sysdeps/ieee754/ldbl-128ibm/e_sqrtl.c b/sysdeps/ieee754/ldbl-128ibm/e_sqrtl.c index 96845fe5f8..51365d6e07 100644 --- a/sysdeps/ieee754/ldbl-128ibm/e_sqrtl.c +++ b/sysdeps/ieee754/ldbl-128ibm/e_sqrtl.c @@ -91,11 +91,9 @@ long double __ieee754_sqrtl(long double x) return c.x * i; } else { - if (k>=INT64_C(0x7ff0000000000000)) { - if (a.i[0] == INT64_C(0xfff0000000000000)) - return (big1-big1)/(big-big); /* sqrt (-Inf) = NaN. */ - return x; /* sqrt (NaN) = NaN, sqrt (+Inf) = +Inf. */ - } + if (k>=INT64_C(0x7ff0000000000000)) + /* sqrt (-Inf) = NaN, sqrt (NaN) = NaN, sqrt (+Inf) = +Inf. */ + return x * x + x; if (x == 0) return x; if (x < 0) return (big1-big1)/(big-big); return tm256*__ieee754_sqrtl(x*t512); |