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
@@ -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 @@ -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 8216c49..8bd35d0 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; |