Initial revision

diff --git a/sysdeps/ieee754/ieee754.h b/sysdeps/ieee754/ieee754.h
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+/* Copyright (C) 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <endian.h>
+
+union
+  {
+    double d;
+    
+    /* This is the IEEE 754 double-precision format.  */
+    struct
+      {
+#ifdef __BIG_ENDIAN
+       unsigned int negative:1;
+       int exponent:11;
+       /* Together these comprise the signed mantissa.  */
+       int mantissa0:20;
+       unsigned int mantissa1:32;
+#endif
+#ifdef __LITTLE_ENDIAN
+       /* Together these comprise the signed mantissa.  */
+       unsigned int mantissa1:32;
+       int mantissa0:20;
+       int exponent:11;
+       unsigned int negative:1;
+#endif
+      } ieee;
+  };