diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | NEWS | 2 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/e_powl.c | 14 |
3 files changed, 15 insertions, 8 deletions
diff --git a/ChangeLog b/ChangeLog index cab8d1bb29..3338301a2e 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,10 @@ +2012-12-04 Joseph Myers <joseph@codesourcery.com> + + [BZ #14914] + * sysdeps/ieee754/ldbl-128ibm/e_powl.c (__ieee754_powl): Clear + whole low double instead of just low 47 bits when splitting values + into two parts. + 2012-12-03 Allan McRae <allan@archlinux.org> * manual/stdio.texi (Predefined Printf Handlers): Remove diff --git a/NEWS b/NEWS index 744df37833..24f6302dfa 100644 --- a/NEWS +++ b/NEWS @@ -22,7 +22,7 @@ Version 2.17 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14835, 14838, 14856, 14863, - 14865, 14866, 14868, 14869, 14871, 14879, 14889, 14893. + 14865, 14866, 14868, 14869, 14871, 14879, 14889, 14893, 14914. * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with EMFILE has been fixed (Bugzilla #14889). diff --git a/sysdeps/ieee754/ldbl-128ibm/e_powl.c b/sysdeps/ieee754/ldbl-128ibm/e_powl.c index 8216c4906b..8bd35d0c88 100644 --- a/sysdeps/ieee754/ldbl-128ibm/e_powl.c +++ b/sysdeps/ieee754/ldbl-128ibm/e_powl.c @@ -324,13 +324,13 @@ __ieee754_powl (long double x, long double y) o.value = s_h; o.parts32.w3 = 0; - o.parts32.w2 &= 0xffff8000; + o.parts32.w2 = 0; s_h = o.value; /* t_h=ax+bp[k] High */ t_h = ax + bp[k]; o.value = t_h; o.parts32.w3 = 0; - o.parts32.w2 &= 0xffff8000; + o.parts32.w2 = 0; t_h = o.value; t_l = ax - (t_h - bp[k]); s_l = v * ((u - s_h * t_h) - s_h * t_l); @@ -344,7 +344,7 @@ __ieee754_powl (long double x, long double y) t_h = 3.0 + s2 + r; o.value = t_h; o.parts32.w3 = 0; - o.parts32.w2 &= 0xffff8000; + o.parts32.w2 = 0; t_h = o.value; t_l = r - ((t_h - 3.0) - s2); /* u+v = s*(1+...) */ @@ -354,7 +354,7 @@ __ieee754_powl (long double x, long double y) p_h = u + v; o.value = p_h; o.parts32.w3 = 0; - o.parts32.w2 &= 0xffff8000; + o.parts32.w2 = 0; p_h = o.value; p_l = v - (p_h - u); z_h = cp_h * p_h; /* cp_h+cp_l = 2/(3*log2) */ @@ -364,7 +364,7 @@ __ieee754_powl (long double x, long double y) t1 = (((z_h + z_l) + dp_h[k]) + t); o.value = t1; o.parts32.w3 = 0; - o.parts32.w2 &= 0xffff8000; + o.parts32.w2 = 0; t1 = o.value; t2 = z_l - (((t1 - t) - dp_h[k]) - z_h); @@ -377,7 +377,7 @@ __ieee754_powl (long double x, long double y) y1 = y; o.value = y1; o.parts32.w3 = 0; - o.parts32.w2 &= 0xffff8000; + o.parts32.w2 = 0; y1 = o.value; p_l = (y - y1) * t1 + y * t2; p_h = y1 * t1; @@ -421,7 +421,7 @@ __ieee754_powl (long double x, long double y) t = p_l + p_h; o.value = t; o.parts32.w3 = 0; - o.parts32.w2 &= 0xffff8000; + o.parts32.w2 = 0; t = o.value; u = t * lg2_h; v = (p_l - (t - p_h)) * lg2 + t * lg2_l; |