[thirdparty/glibc.git] / soft-fp / double.h

/* Software floating-point emulation.
   Definitions for IEEE Double Precision
   Copyright (C) 1997-2014 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Richard Henderson (rth@cygnus.com),
		  Jakub Jelinek (jj@ultra.linux.cz),
		  David S. Miller (davem@redhat.com) and
		  Peter Maydell (pmaydell@chiark.greenend.org.uk).

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   In addition to the permissions in the GNU Lesser General Public
   License, the Free Software Foundation gives you unlimited
   permission to link the compiled version of this file into
   combinations with other programs, and to distribute those
   combinations without any restriction coming from the use of this
   file.  (The Lesser General Public License restrictions do apply in
   other respects; for example, they cover modification of the file,
   and distribution when not linked into a combine executable.)

   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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#if _FP_W_TYPE_SIZE < 32
# error "Here's a nickel kid.  Go buy yourself a real computer."
#endif

#if _FP_W_TYPE_SIZE < 64
# define _FP_FRACTBITS_D	(2 * _FP_W_TYPE_SIZE)
# define _FP_FRACTBITS_DW_D	(4 * _FP_W_TYPE_SIZE)
#else
# define _FP_FRACTBITS_D	_FP_W_TYPE_SIZE
# define _FP_FRACTBITS_DW_D	(2 * _FP_W_TYPE_SIZE)
#endif

#define _FP_FRACBITS_D		53
#define _FP_FRACXBITS_D		(_FP_FRACTBITS_D - _FP_FRACBITS_D)
#define _FP_WFRACBITS_D		(_FP_WORKBITS + _FP_FRACBITS_D)
#define _FP_WFRACXBITS_D	(_FP_FRACTBITS_D - _FP_WFRACBITS_D)
#define _FP_EXPBITS_D		11
#define _FP_EXPBIAS_D		1023
#define _FP_EXPMAX_D		2047

#define _FP_QNANBIT_D		\
	((_FP_W_TYPE) 1 << (_FP_FRACBITS_D-2) % _FP_W_TYPE_SIZE)
#define _FP_QNANBIT_SH_D		\
	((_FP_W_TYPE) 1 << (_FP_FRACBITS_D-2+_FP_WORKBITS) % _FP_W_TYPE_SIZE)
#define _FP_IMPLBIT_D		\
	((_FP_W_TYPE) 1 << (_FP_FRACBITS_D-1) % _FP_W_TYPE_SIZE)
#define _FP_IMPLBIT_SH_D		\
	((_FP_W_TYPE) 1 << (_FP_FRACBITS_D-1+_FP_WORKBITS) % _FP_W_TYPE_SIZE)
#define _FP_OVERFLOW_D		\
	((_FP_W_TYPE) 1 << _FP_WFRACBITS_D % _FP_W_TYPE_SIZE)

#define _FP_WFRACBITS_DW_D	(2 * _FP_WFRACBITS_D)
#define _FP_WFRACXBITS_DW_D	(_FP_FRACTBITS_DW_D - _FP_WFRACBITS_DW_D)
#define _FP_HIGHBIT_DW_D	\
  ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_DW_D - 1) % _FP_W_TYPE_SIZE)

typedef float DFtype __attribute__ ((mode (DF)));

#if _FP_W_TYPE_SIZE < 64

union _FP_UNION_D
{
  DFtype flt;
  struct _FP_STRUCT_LAYOUT
  {
# if __BYTE_ORDER == __BIG_ENDIAN
    unsigned sign  : 1;
    unsigned exp   : _FP_EXPBITS_D;
    unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE;
    unsigned frac0 : _FP_W_TYPE_SIZE;
# else
    unsigned frac0 : _FP_W_TYPE_SIZE;
    unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE;
    unsigned exp   : _FP_EXPBITS_D;
    unsigned sign  : 1;
# endif
  } bits __attribute__ ((packed));
};

# define FP_DECL_D(X)		_FP_DECL (2, X)
# define FP_UNPACK_RAW_D(X, val)	_FP_UNPACK_RAW_2 (D, X, val)
# define FP_UNPACK_RAW_DP(X, val)	_FP_UNPACK_RAW_2_P (D, X, val)
# define FP_PACK_RAW_D(val, X)	_FP_PACK_RAW_2 (D, val, X)
# define FP_PACK_RAW_DP(val, X)			\
  do						\
    {						\
      if (!FP_INHIBIT_RESULTS)			\
	_FP_PACK_RAW_2_P (D, val, X);		\
    }						\
  while (0)

# define FP_UNPACK_D(X, val)			\
  do						\
    {						\
      _FP_UNPACK_RAW_2 (D, X, val);		\
      _FP_UNPACK_CANONICAL (D, 2, X);		\
    }						\
  while (0)

# define FP_UNPACK_DP(X, val)			\
  do						\
    {						\
      _FP_UNPACK_RAW_2_P (D, X, val);		\
      _FP_UNPACK_CANONICAL (D, 2, X);		\
    }						\
  while (0)

# define FP_UNPACK_SEMIRAW_D(X, val)		\
  do						\
    {						\
      _FP_UNPACK_RAW_2 (D, X, val);		\
      _FP_UNPACK_SEMIRAW (D, 2, X);		\
    }						\
  while (0)

# define FP_UNPACK_SEMIRAW_DP(X, val)		\
  do						\
    {						\
      _FP_UNPACK_RAW_2_P (D, X, val);		\
      _FP_UNPACK_SEMIRAW (D, 2, X);		\
    }						\
  while (0)

# define FP_PACK_D(val, X)			\
  do						\
    {						\
      _FP_PACK_CANONICAL (D, 2, X);		\
      _FP_PACK_RAW_2 (D, val, X);		\
    }						\
  while (0)

# define FP_PACK_DP(val, X)			\
  do						\
    {						\
      _FP_PACK_CANONICAL (D, 2, X);		\
      if (!FP_INHIBIT_RESULTS)			\
	_FP_PACK_RAW_2_P (D, val, X);		\
    }						\
  while (0)

# define FP_PACK_SEMIRAW_D(val, X)		\
  do						\
    {						\
      _FP_PACK_SEMIRAW (D, 2, X);		\
      _FP_PACK_RAW_2 (D, val, X);		\
    }						\
  while (0)

# define FP_PACK_SEMIRAW_DP(val, X)		\
  do						\
    {						\
      _FP_PACK_SEMIRAW (D, 2, X);		\
      if (!FP_INHIBIT_RESULTS)			\
	_FP_PACK_RAW_2_P (D, val, X);		\
    }						\
  while (0)

# define FP_ISSIGNAN_D(X)		_FP_ISSIGNAN (D, 2, X)
# define FP_NEG_D(R, X)			_FP_NEG (D, 2, R, X)
# define FP_ADD_D(R, X, Y)		_FP_ADD (D, 2, R, X, Y)
# define FP_SUB_D(R, X, Y)		_FP_SUB (D, 2, R, X, Y)
# define FP_MUL_D(R, X, Y)		_FP_MUL (D, 2, R, X, Y)
# define FP_DIV_D(R, X, Y)		_FP_DIV (D, 2, R, X, Y)
# define FP_SQRT_D(R, X)		_FP_SQRT (D, 2, R, X)
# define _FP_SQRT_MEAT_D(R, S, T, X, Q)	_FP_SQRT_MEAT_2 (R, S, T, X, Q)
# define FP_FMA_D(R, X, Y, Z)		_FP_FMA (D, 2, 4, R, X, Y, Z)

# define FP_CMP_D(r, X, Y, un)		_FP_CMP (D, 2, r, X, Y, un)
# define FP_CMP_EQ_D(r, X, Y)		_FP_CMP_EQ (D, 2, r, X, Y)
# define FP_CMP_UNORD_D(r, X, Y)	_FP_CMP_UNORD (D, 2, r, X, Y)

# define FP_TO_INT_D(r, X, rsz, rsg)	_FP_TO_INT (D, 2, r, X, rsz, rsg)
# define FP_FROM_INT_D(X, r, rs, rt)	_FP_FROM_INT (D, 2, X, r, rs, rt)

# define _FP_FRAC_HIGH_D(X)	_FP_FRAC_HIGH_2 (X)
# define _FP_FRAC_HIGH_RAW_D(X)	_FP_FRAC_HIGH_2 (X)

# define _FP_FRAC_HIGH_DW_D(X)	_FP_FRAC_HIGH_4 (X)

#else

union _FP_UNION_D
{
  DFtype flt;
  struct _FP_STRUCT_LAYOUT
  {
# if __BYTE_ORDER == __BIG_ENDIAN
    unsigned sign   : 1;
    unsigned exp    : _FP_EXPBITS_D;
    _FP_W_TYPE frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0);
# else
    _FP_W_TYPE frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0);
    unsigned exp    : _FP_EXPBITS_D;
    unsigned sign   : 1;
# endif
  } bits __attribute__ ((packed));
};

# define FP_DECL_D(X)		_FP_DECL (1, X)
# define FP_UNPACK_RAW_D(X, val)	_FP_UNPACK_RAW_1 (D, X, val)
# define FP_UNPACK_RAW_DP(X, val)	_FP_UNPACK_RAW_1_P (D, X, val)
# define FP_PACK_RAW_D(val, X)	_FP_PACK_RAW_1 (D, val, X)
# define FP_PACK_RAW_DP(val, X)			\
  do						\
    {						\
      if (!FP_INHIBIT_RESULTS)			\
	_FP_PACK_RAW_1_P (D, val, X);		\
    }						\
  while (0)

# define FP_UNPACK_D(X, val)			\
  do						\
    {						\
      _FP_UNPACK_RAW_1 (D, X, val);		\
      _FP_UNPACK_CANONICAL (D, 1, X);		\
    }						\
  while (0)

# define FP_UNPACK_DP(X, val)			\
  do						\
    {						\
      _FP_UNPACK_RAW_1_P (D, X, val);		\
      _FP_UNPACK_CANONICAL (D, 1, X);		\
    }						\
  while (0)

# define FP_UNPACK_SEMIRAW_D(X, val)		\
  do						\
    {						\
      _FP_UNPACK_RAW_1 (D, X, val);		\
      _FP_UNPACK_SEMIRAW (D, 1, X);		\
    }						\
  while (0)

# define FP_UNPACK_SEMIRAW_DP(X, val)		\
  do						\
    {						\
      _FP_UNPACK_RAW_1_P (D, X, val);		\
      _FP_UNPACK_SEMIRAW (D, 1, X);		\
    }						\
  while (0)

# define FP_PACK_D(val, X)			\
  do						\
    {						\
      _FP_PACK_CANONICAL (D, 1, X);		\
      _FP_PACK_RAW_1 (D, val, X);		\
    }						\
  while (0)

# define FP_PACK_DP(val, X)			\
  do						\
    {						\
      _FP_PACK_CANONICAL (D, 1, X);		\
      if (!FP_INHIBIT_RESULTS)			\
	_FP_PACK_RAW_1_P (D, val, X);		\
    }						\
  while (0)

# define FP_PACK_SEMIRAW_D(val, X)		\
  do						\
    {						\
      _FP_PACK_SEMIRAW (D, 1, X);		\
      _FP_PACK_RAW_1 (D, val, X);		\
    }						\
  while (0)

# define FP_PACK_SEMIRAW_DP(val, X)		\
  do						\
    {						\
      _FP_PACK_SEMIRAW (D, 1, X);		\
      if (!FP_INHIBIT_RESULTS)			\
	_FP_PACK_RAW_1_P (D, val, X);		\
    }						\
  while (0)

# define FP_ISSIGNAN_D(X)		_FP_ISSIGNAN (D, 1, X)
# define FP_NEG_D(R, X)			_FP_NEG (D, 1, R, X)
# define FP_ADD_D(R, X, Y)		_FP_ADD (D, 1, R, X, Y)
# define FP_SUB_D(R, X, Y)		_FP_SUB (D, 1, R, X, Y)
# define FP_MUL_D(R, X, Y)		_FP_MUL (D, 1, R, X, Y)
# define FP_DIV_D(R, X, Y)		_FP_DIV (D, 1, R, X, Y)
# define FP_SQRT_D(R, X)		_FP_SQRT (D, 1, R, X)
# define _FP_SQRT_MEAT_D(R, S, T, X, Q)	_FP_SQRT_MEAT_1 (R, S, T, X, Q)
# define FP_FMA_D(R, X, Y, Z)		_FP_FMA (D, 1, 2, R, X, Y, Z)

/* The implementation of _FP_MUL_D and _FP_DIV_D should be chosen by
   the target machine.  */

# define FP_CMP_D(r, X, Y, un)		_FP_CMP (D, 1, r, X, Y, un)
# define FP_CMP_EQ_D(r, X, Y)		_FP_CMP_EQ (D, 1, r, X, Y)
# define FP_CMP_UNORD_D(r, X, Y)	_FP_CMP_UNORD (D, 1, r, X, Y)

# define FP_TO_INT_D(r, X, rsz, rsg)	_FP_TO_INT (D, 1, r, X, rsz, rsg)
# define FP_FROM_INT_D(X, r, rs, rt)	_FP_FROM_INT (D, 1, X, r, rs, rt)

# define _FP_FRAC_HIGH_D(X)	_FP_FRAC_HIGH_1 (X)
# define _FP_FRAC_HIGH_RAW_D(X)	_FP_FRAC_HIGH_1 (X)

# define _FP_FRAC_HIGH_DW_D(X)	_FP_FRAC_HIGH_2 (X)

#endif /* W_TYPE_SIZE < 64 */
Commit	Line	Data
	1	/* Software floating-point emulation.
	2	Definitions for IEEE Double Precision
	3	Copyright (C) 1997-2014 Free Software Foundation, Inc.
	4	This file is part of the GNU C Library.
	5	Contributed by Richard Henderson (rth@cygnus.com),
	6	Jakub Jelinek (jj@ultra.linux.cz),
	7	David S. Miller (davem@redhat.com) and
	8	Peter Maydell (pmaydell@chiark.greenend.org.uk).
	9
	10	The GNU C Library is free software; you can redistribute it and/or
	11	modify it under the terms of the GNU Lesser General Public
	12	License as published by the Free Software Foundation; either
	13	version 2.1 of the License, or (at your option) any later version.
	14
	15	In addition to the permissions in the GNU Lesser General Public
	16	License, the Free Software Foundation gives you unlimited
	17	permission to link the compiled version of this file into
	18	combinations with other programs, and to distribute those
	19	combinations without any restriction coming from the use of this
	20	file. (The Lesser General Public License restrictions do apply in
	21	other respects; for example, they cover modification of the file,
	22	and distribution when not linked into a combine executable.)
	23
	24	The GNU C Library is distributed in the hope that it will be useful,
	25	but WITHOUT ANY WARRANTY; without even the implied warranty of
	26	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	27	Lesser General Public License for more details.
	28
	29	You should have received a copy of the GNU Lesser General Public
	30	License along with the GNU C Library; if not, see
	31	<http://www.gnu.org/licenses/>. */
	32
	33	#if _FP_W_TYPE_SIZE < 32
	34	# error "Here's a nickel kid. Go buy yourself a real computer."
	35	#endif
	36
	37	#if _FP_W_TYPE_SIZE < 64
	38	# define _FP_FRACTBITS_D (2 * _FP_W_TYPE_SIZE)
	39	# define _FP_FRACTBITS_DW_D (4 * _FP_W_TYPE_SIZE)
	40	#else
	41	# define _FP_FRACTBITS_D _FP_W_TYPE_SIZE
	42	# define _FP_FRACTBITS_DW_D (2 * _FP_W_TYPE_SIZE)
	43	#endif
	44
	45	#define _FP_FRACBITS_D 53
	46	#define _FP_FRACXBITS_D (_FP_FRACTBITS_D - _FP_FRACBITS_D)
	47	#define _FP_WFRACBITS_D (_FP_WORKBITS + _FP_FRACBITS_D)
	48	#define _FP_WFRACXBITS_D (_FP_FRACTBITS_D - _FP_WFRACBITS_D)
	49	#define _FP_EXPBITS_D 11
	50	#define _FP_EXPBIAS_D 1023
	51	#define _FP_EXPMAX_D 2047
	52
	53	#define _FP_QNANBIT_D \
	54	((_FP_W_TYPE) 1 << (_FP_FRACBITS_D-2) % _FP_W_TYPE_SIZE)
	55	#define _FP_QNANBIT_SH_D \
	56	((_FP_W_TYPE) 1 << (_FP_FRACBITS_D-2+_FP_WORKBITS) % _FP_W_TYPE_SIZE)
	57	#define _FP_IMPLBIT_D \
	58	((_FP_W_TYPE) 1 << (_FP_FRACBITS_D-1) % _FP_W_TYPE_SIZE)
	59	#define _FP_IMPLBIT_SH_D \
	60	((_FP_W_TYPE) 1 << (_FP_FRACBITS_D-1+_FP_WORKBITS) % _FP_W_TYPE_SIZE)
	61	#define _FP_OVERFLOW_D \
	62	((_FP_W_TYPE) 1 << _FP_WFRACBITS_D % _FP_W_TYPE_SIZE)
	63
	64	#define _FP_WFRACBITS_DW_D (2 * _FP_WFRACBITS_D)
	65	#define _FP_WFRACXBITS_DW_D (_FP_FRACTBITS_DW_D - _FP_WFRACBITS_DW_D)
	66	#define _FP_HIGHBIT_DW_D \
	67	((_FP_W_TYPE) 1 << (_FP_WFRACBITS_DW_D - 1) % _FP_W_TYPE_SIZE)
	68
	69	typedef float DFtype __attribute__ ((mode (DF)));
	70
	71	#if _FP_W_TYPE_SIZE < 64
	72
	73	union _FP_UNION_D
	74	{
	75	DFtype flt;
	76	struct _FP_STRUCT_LAYOUT
	77	{
	78	# if __BYTE_ORDER == __BIG_ENDIAN
	79	unsigned sign : 1;
	80	unsigned exp : _FP_EXPBITS_D;
	81	unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE;
	82	unsigned frac0 : _FP_W_TYPE_SIZE;
	83	# else
	84	unsigned frac0 : _FP_W_TYPE_SIZE;
	85	unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE;
	86	unsigned exp : _FP_EXPBITS_D;
	87	unsigned sign : 1;
	88	# endif
	89	} bits __attribute__ ((packed));
	90	};
	91
	92	# define FP_DECL_D(X) _FP_DECL (2, X)
	93	# define FP_UNPACK_RAW_D(X, val) _FP_UNPACK_RAW_2 (D, X, val)
	94	# define FP_UNPACK_RAW_DP(X, val) _FP_UNPACK_RAW_2_P (D, X, val)
	95	# define FP_PACK_RAW_D(val, X) _FP_PACK_RAW_2 (D, val, X)
	96	# define FP_PACK_RAW_DP(val, X) \
	97	do \
	98	{ \
	99	if (!FP_INHIBIT_RESULTS) \
	100	_FP_PACK_RAW_2_P (D, val, X); \
	101	} \
	102	while (0)
	103
	104	# define FP_UNPACK_D(X, val) \
	105	do \
	106	{ \
	107	_FP_UNPACK_RAW_2 (D, X, val); \
	108	_FP_UNPACK_CANONICAL (D, 2, X); \
	109	} \
	110	while (0)
	111
	112	# define FP_UNPACK_DP(X, val) \
	113	do \
	114	{ \
	115	_FP_UNPACK_RAW_2_P (D, X, val); \
	116	_FP_UNPACK_CANONICAL (D, 2, X); \
	117	} \
	118	while (0)
	119
	120	# define FP_UNPACK_SEMIRAW_D(X, val) \
	121	do \
	122	{ \
	123	_FP_UNPACK_RAW_2 (D, X, val); \
	124	_FP_UNPACK_SEMIRAW (D, 2, X); \
	125	} \
	126	while (0)
	127
	128	# define FP_UNPACK_SEMIRAW_DP(X, val) \
	129	do \
	130	{ \
	131	_FP_UNPACK_RAW_2_P (D, X, val); \
	132	_FP_UNPACK_SEMIRAW (D, 2, X); \
	133	} \
	134	while (0)
	135
	136	# define FP_PACK_D(val, X) \
	137	do \
	138	{ \
	139	_FP_PACK_CANONICAL (D, 2, X); \
	140	_FP_PACK_RAW_2 (D, val, X); \
	141	} \
	142	while (0)
	143
	144	# define FP_PACK_DP(val, X) \
	145	do \
	146	{ \
	147	_FP_PACK_CANONICAL (D, 2, X); \
	148	if (!FP_INHIBIT_RESULTS) \
	149	_FP_PACK_RAW_2_P (D, val, X); \
	150	} \
	151	while (0)
	152
	153	# define FP_PACK_SEMIRAW_D(val, X) \
	154	do \
	155	{ \
	156	_FP_PACK_SEMIRAW (D, 2, X); \
	157	_FP_PACK_RAW_2 (D, val, X); \
	158	} \
	159	while (0)
	160
	161	# define FP_PACK_SEMIRAW_DP(val, X) \
	162	do \
	163	{ \
	164	_FP_PACK_SEMIRAW (D, 2, X); \
	165	if (!FP_INHIBIT_RESULTS) \
	166	_FP_PACK_RAW_2_P (D, val, X); \
	167	} \
	168	while (0)
	169
	170	# define FP_ISSIGNAN_D(X) _FP_ISSIGNAN (D, 2, X)
	171	# define FP_NEG_D(R, X) _FP_NEG (D, 2, R, X)
	172	# define FP_ADD_D(R, X, Y) _FP_ADD (D, 2, R, X, Y)
	173	# define FP_SUB_D(R, X, Y) _FP_SUB (D, 2, R, X, Y)
	174	# define FP_MUL_D(R, X, Y) _FP_MUL (D, 2, R, X, Y)
	175	# define FP_DIV_D(R, X, Y) _FP_DIV (D, 2, R, X, Y)
	176	# define FP_SQRT_D(R, X) _FP_SQRT (D, 2, R, X)
	177	# define _FP_SQRT_MEAT_D(R, S, T, X, Q) _FP_SQRT_MEAT_2 (R, S, T, X, Q)
	178	# define FP_FMA_D(R, X, Y, Z) _FP_FMA (D, 2, 4, R, X, Y, Z)
	179
	180	# define FP_CMP_D(r, X, Y, un) _FP_CMP (D, 2, r, X, Y, un)
	181	# define FP_CMP_EQ_D(r, X, Y) _FP_CMP_EQ (D, 2, r, X, Y)
	182	# define FP_CMP_UNORD_D(r, X, Y) _FP_CMP_UNORD (D, 2, r, X, Y)
	183
	184	# define FP_TO_INT_D(r, X, rsz, rsg) _FP_TO_INT (D, 2, r, X, rsz, rsg)
	185	# define FP_FROM_INT_D(X, r, rs, rt) _FP_FROM_INT (D, 2, X, r, rs, rt)
	186
	187	# define _FP_FRAC_HIGH_D(X) _FP_FRAC_HIGH_2 (X)
	188	# define _FP_FRAC_HIGH_RAW_D(X) _FP_FRAC_HIGH_2 (X)
	189
	190	# define _FP_FRAC_HIGH_DW_D(X) _FP_FRAC_HIGH_4 (X)
	191
	192	#else
	193
	194	union _FP_UNION_D
	195	{
	196	DFtype flt;
	197	struct _FP_STRUCT_LAYOUT
	198	{
	199	# if __BYTE_ORDER == __BIG_ENDIAN
	200	unsigned sign : 1;
	201	unsigned exp : _FP_EXPBITS_D;
	202	_FP_W_TYPE frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0);
	203	# else
	204	_FP_W_TYPE frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0);
	205	unsigned exp : _FP_EXPBITS_D;
	206	unsigned sign : 1;
	207	# endif
	208	} bits __attribute__ ((packed));
	209	};
	210
	211	# define FP_DECL_D(X) _FP_DECL (1, X)
	212	# define FP_UNPACK_RAW_D(X, val) _FP_UNPACK_RAW_1 (D, X, val)
	213	# define FP_UNPACK_RAW_DP(X, val) _FP_UNPACK_RAW_1_P (D, X, val)
	214	# define FP_PACK_RAW_D(val, X) _FP_PACK_RAW_1 (D, val, X)
	215	# define FP_PACK_RAW_DP(val, X) \
	216	do \
	217	{ \
	218	if (!FP_INHIBIT_RESULTS) \
	219	_FP_PACK_RAW_1_P (D, val, X); \
	220	} \
	221	while (0)
	222
	223	# define FP_UNPACK_D(X, val) \
	224	do \
	225	{ \
	226	_FP_UNPACK_RAW_1 (D, X, val); \
	227	_FP_UNPACK_CANONICAL (D, 1, X); \
	228	} \
	229	while (0)
	230
	231	# define FP_UNPACK_DP(X, val) \
	232	do \
	233	{ \
	234	_FP_UNPACK_RAW_1_P (D, X, val); \
	235	_FP_UNPACK_CANONICAL (D, 1, X); \
	236	} \
	237	while (0)
	238
	239	# define FP_UNPACK_SEMIRAW_D(X, val) \
	240	do \
	241	{ \
	242	_FP_UNPACK_RAW_1 (D, X, val); \
	243	_FP_UNPACK_SEMIRAW (D, 1, X); \
	244	} \
	245	while (0)
	246
	247	# define FP_UNPACK_SEMIRAW_DP(X, val) \
	248	do \
	249	{ \
	250	_FP_UNPACK_RAW_1_P (D, X, val); \
	251	_FP_UNPACK_SEMIRAW (D, 1, X); \
	252	} \
	253	while (0)
	254
	255	# define FP_PACK_D(val, X) \
	256	do \
	257	{ \
	258	_FP_PACK_CANONICAL (D, 1, X); \
	259	_FP_PACK_RAW_1 (D, val, X); \
	260	} \
	261	while (0)
	262
	263	# define FP_PACK_DP(val, X) \
	264	do \
	265	{ \
	266	_FP_PACK_CANONICAL (D, 1, X); \
	267	if (!FP_INHIBIT_RESULTS) \
	268	_FP_PACK_RAW_1_P (D, val, X); \
	269	} \
	270	while (0)
	271
	272	# define FP_PACK_SEMIRAW_D(val, X) \
	273	do \
	274	{ \
	275	_FP_PACK_SEMIRAW (D, 1, X); \
	276	_FP_PACK_RAW_1 (D, val, X); \
	277	} \
	278	while (0)
	279
	280	# define FP_PACK_SEMIRAW_DP(val, X) \
	281	do \
	282	{ \
	283	_FP_PACK_SEMIRAW (D, 1, X); \
	284	if (!FP_INHIBIT_RESULTS) \
	285	_FP_PACK_RAW_1_P (D, val, X); \
	286	} \
	287	while (0)
	288
	289	# define FP_ISSIGNAN_D(X) _FP_ISSIGNAN (D, 1, X)
	290	# define FP_NEG_D(R, X) _FP_NEG (D, 1, R, X)
	291	# define FP_ADD_D(R, X, Y) _FP_ADD (D, 1, R, X, Y)
	292	# define FP_SUB_D(R, X, Y) _FP_SUB (D, 1, R, X, Y)
	293	# define FP_MUL_D(R, X, Y) _FP_MUL (D, 1, R, X, Y)
	294	# define FP_DIV_D(R, X, Y) _FP_DIV (D, 1, R, X, Y)
	295	# define FP_SQRT_D(R, X) _FP_SQRT (D, 1, R, X)
	296	# define _FP_SQRT_MEAT_D(R, S, T, X, Q) _FP_SQRT_MEAT_1 (R, S, T, X, Q)
	297	# define FP_FMA_D(R, X, Y, Z) _FP_FMA (D, 1, 2, R, X, Y, Z)
	298
	299	/* The implementation of _FP_MUL_D and _FP_DIV_D should be chosen by
	300	the target machine. */
	301
	302	# define FP_CMP_D(r, X, Y, un) _FP_CMP (D, 1, r, X, Y, un)
	303	# define FP_CMP_EQ_D(r, X, Y) _FP_CMP_EQ (D, 1, r, X, Y)
	304	# define FP_CMP_UNORD_D(r, X, Y) _FP_CMP_UNORD (D, 1, r, X, Y)
	305
	306	# define FP_TO_INT_D(r, X, rsz, rsg) _FP_TO_INT (D, 1, r, X, rsz, rsg)
	307	# define FP_FROM_INT_D(X, r, rs, rt) _FP_FROM_INT (D, 1, X, r, rs, rt)
	308
	309	# define _FP_FRAC_HIGH_D(X) _FP_FRAC_HIGH_1 (X)
	310	# define _FP_FRAC_HIGH_RAW_D(X) _FP_FRAC_HIGH_1 (X)
	311
	312	# define _FP_FRAC_HIGH_DW_D(X) _FP_FRAC_HIGH_2 (X)
	313
	314	#endif /* W_TYPE_SIZE < 64 */