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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. */
-
- #ifndef _IEEE854_H
- #define _IEEE854_H
-
- #include <endian.h>
-
- union ieee854_double
- {
- long double d;
-
- /* This is the IEEE 854 double-extended-precision format. */
- struct
- {
- #if __BYTE_ORDER == __BIG_ENDIAN
- unsigned int negative:1;
- unsigned int exponent:15;
- unsigned int empty:16;
- unsigned int mantissa0:32;
- unsigned int mantissa1:32;
- #endif
- #if __BYTE_ORDER == __LITTLE_ENDIAN
- unsigned int mantissa1:32;
- unsigned int mantissa0:32;
- unsigned int exponent:15;
- unsigned int negative:1;
- unsigned int empty:16;
- #endif
- } ieee;
-
- /* This is for NaNs in the IEEE 854 double-extended-precision format. */
- struct
- {
- #if __BYTE_ORDER == __BIG_ENDIAN
- unsigned int negative:1;
- unsigned int exponent:15;
- unsigned int empty:16;
- unsigned int one:1;
- unsigned int quiet_nan:1;
- unsigned int mantissa0:30;
- unsigned int mantissa1:32;
- #endif
- #if __BYTE_ORDER == __LITTLE_ENDIAN
- unsigned int mantissa1:32;
- unsigned int mantissa0:30;
- unsigned int quiet_nan:1;
- unsigned int one:1;
- unsigned int exponent:15;
- unsigned int negative:1;
- unsigned int empty:16;
- #endif
- } ieee_nan;
- };
-
- #define _IEEE854_DOUBLE_BIAS 0x3fff
-
- #endif /* _IEEE854_H */
-