From 7b1902cb3e64d340247638a8781770c3a4d850ce Mon Sep 17 00:00:00 2001
From: Joseph Myers <joseph@codesourcery.com>
Date: Thu, 1 Mar 2012 21:15:38 +0000
Subject: Improve erfc accuracy.

---
 sysdeps/ieee754/ldbl-128ibm/s_erfl.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'sysdeps/ieee754/ldbl-128ibm/s_erfl.c')

diff --git a/sysdeps/ieee754/ldbl-128ibm/s_erfl.c b/sysdeps/ieee754/ldbl-128ibm/s_erfl.c
index 85cdbe0..8868f7e 100644
--- a/sysdeps/ieee754/ldbl-128ibm/s_erfl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/s_erfl.c
@@ -920,7 +920,8 @@ __erfcl (long double x)
 	}
       u.value = x;
       u.parts32.w3 = 0;
-      u.parts32.w2 &= 0xffffe000;
+      u.parts32.w2 = 0;
+      u.parts32.w1 &= 0xf8000000;
       z = u.value;
       r = __ieee754_expl (-z * z - 0.5625) *
 	__ieee754_expl ((z - x) * (z + x) + p);
-- 
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