--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libquadmath/math/copysignq.c	Sun Aug 21 07:07:55 2011 +0900
@@ -0,0 +1,26 @@
+/* s_copysignl.c -- long double version of s_copysign.c.
+ * Conversion to long double by Jakub Jelinek, jj@ultra.linux.cz.
+ */
+
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+#include "quadmath-imp.h"
+
+__float128
+copysignq (__float128 x, __float128 y)
+{
+  uint64_t hx,hy;
+  GET_FLT128_MSW64(hx,x);
+  GET_FLT128_MSW64(hy,y);
+  SET_FLT128_MSW64(x,(hx&0x7fffffffffffffffULL)|(hy&0x8000000000000000ULL));
+  return x;
+}