[thirdparty/gcc.git] / libgcc / fp-bit.h

/* Header file for fp-bit.c.  */
/* Copyright (C) 2000-2019 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.

GCC 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 General Public License
for more details.

Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.

You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
<http://www.gnu.org/licenses/>.  */

#ifndef GCC_FP_BIT_H
#define GCC_FP_BIT_H

/* Defining FINE_GRAINED_LIBRARIES allows one to select which routines
   from this file are compiled via additional -D options.

   This avoids the need to pull in the entire fp emulation library
   when only a small number of functions are needed.

   If FINE_GRAINED_LIBRARIES is not defined, then compile every
   suitable routine.  */
#ifndef FINE_GRAINED_LIBRARIES
#define L_pack_df
#define L_unpack_df
#define L_pack_sf
#define L_unpack_sf
#define L_addsub_sf
#define L_addsub_df
#define L_mul_sf
#define L_mul_df
#define L_div_sf
#define L_div_df
#define L_fpcmp_parts_sf
#define L_fpcmp_parts_df
#define L_compare_sf
#define L_compare_df
#define L_eq_sf
#define L_eq_df
#define L_ne_sf
#define L_ne_df
#define L_gt_sf
#define L_gt_df
#define L_ge_sf
#define L_ge_df
#define L_lt_sf
#define L_lt_df
#define L_le_sf
#define L_le_df
#define L_unord_sf
#define L_unord_df
#define L_usi_to_sf
#define L_usi_to_df
#define L_si_to_sf
#define L_si_to_df
#define L_sf_to_si
#define L_df_to_si
#define L_f_to_usi
#define L_df_to_usi
#define L_negate_sf
#define L_negate_df
#define L_make_sf
#define L_make_df
#define L_sf_to_df
#define L_df_to_sf
#ifdef FLOAT
#define L_thenan_sf
#else
#define L_thenan_df
#endif
#endif /* ! FINE_GRAINED_LIBRARIES */

#if __LDBL_MANT_DIG__ == 113 || __LDBL_MANT_DIG__ == 106
# if defined(TFLOAT) || defined(L_sf_to_tf) || defined(L_df_to_tf)
#  define TMODES
# endif
#endif

typedef float SFtype __attribute__ ((mode (SF)));
typedef float DFtype __attribute__ ((mode (DF)));
#ifdef TMODES
typedef float TFtype __attribute__ ((mode (TF)));
#endif

typedef int HItype __attribute__ ((mode (HI)));
typedef int SItype __attribute__ ((mode (SI)));
typedef int DItype __attribute__ ((mode (DI)));
#ifdef TMODES
typedef int TItype __attribute__ ((mode (TI)));
#endif

/* The type of the result of a floating point comparison.  This must
   match `__libgcc_cmp_return__' in GCC for the target.  */
#ifndef CMPtype
typedef int CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
#endif

typedef unsigned int UHItype __attribute__ ((mode (HI)));
typedef unsigned int USItype __attribute__ ((mode (SI)));
typedef unsigned int UDItype __attribute__ ((mode (DI)));
#ifdef TMODES
typedef unsigned int UTItype __attribute__ ((mode (TI)));
#endif

#define MAX_USI_INT  (~(USItype)0)
#define MAX_SI_INT   ((SItype) (MAX_USI_INT >> 1))
#define BITS_PER_SI  (4 * __CHAR_BIT__)
#ifdef TMODES
#define MAX_UDI_INT  (~(UDItype)0)
#define MAX_DI_INT   ((DItype) (MAX_UDI_INT >> 1))
#define BITS_PER_DI  (8 * __CHAR_BIT__)
#endif

#ifdef FLOAT_ONLY
#define NO_DI_MODE
#endif

#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define FLOAT_BIT_ORDER_MISMATCH
#endif

#if __BYTE_ORDER__ != __FLOAT_WORD_ORDER__
#define FLOAT_WORD_ORDER_MISMATCH
#endif

#ifdef TFLOAT
# ifndef TMODES
#  error "TFLOAT requires long double to have 113 bits of mantissa"
# endif

#	define PREFIXFPDP tp
#	define PREFIXSFDF tf
#	define NGARDS 10L /* Is this right? */
#	define GARDROUND 0x1ff
#	define GARDMASK  0x3ff
#	define GARDMSB   0x200
#	define FRAC_NBITS 128

# if __LDBL_MANT_DIG__ == 113 /* IEEE quad */
#	define EXPBITS 15
#	define EXPBIAS 16383
#	define EXPMAX (0x7fff)
#	define QUIET_NAN ((TItype)0x8 << 108)
#	define FRACHIGH  ((TItype)0x8 << 124)
#	define FRACHIGH2 ((TItype)0xc << 124)
#	define FRACBITS 112
# endif

# if __LDBL_MANT_DIG__ == 106 /* IBM extended (double+double) */
#	define EXPBITS 11
#	define EXPBIAS 1023
#	define EXPMAX (0x7ff)
#	define QUIET_NAN ((TItype)0x8 << (48 + 64))
#	define FRACHIGH  ((TItype)0x8 << 124)
#	define FRACHIGH2 ((TItype)0xc << 124)
#	define FRACBITS 105
#	define HALFFRACBITS 52
#	define HALFSHIFT 64
# endif

#	define pack_d __pack_t
#	define unpack_d __unpack_t
#	define __fpcmp_parts __fpcmp_parts_t
	typedef UTItype fractype;
	typedef UDItype halffractype;
	typedef USItype qrtrfractype;
#define qrtrfractype qrtrfractype
	typedef TFtype FLO_type;
	typedef TItype intfrac;
#elif defined FLOAT
#	define NGARDS    7L
#	define GARDROUND 0x3f
#	define GARDMASK  0x7f
#	define GARDMSB   0x40
#	define EXPBITS 8
#	define EXPBIAS 127
#	define FRACBITS 23
#	define EXPMAX (0xff)
#	define QUIET_NAN 0x400000L
#	define FRAC_NBITS 32
#	define FRACHIGH  0x80000000L
#	define FRACHIGH2 0xc0000000L
#	define pack_d __pack_f
#	define unpack_d __unpack_f
#	define __fpcmp_parts __fpcmp_parts_f
	typedef USItype fractype;
	typedef UHItype halffractype;
	typedef SFtype FLO_type;
	typedef SItype intfrac;

#else
#	define PREFIXFPDP dp
#	define PREFIXSFDF df
#	define NGARDS 8L
#	define GARDROUND 0x7f
#	define GARDMASK  0xff
#	define GARDMSB   0x80
#	define EXPBITS 11
#	define EXPBIAS 1023
#	define FRACBITS 52
#	define EXPMAX (0x7ff)
#	define QUIET_NAN 0x8000000000000LL
#	define FRAC_NBITS 64
#	define FRACHIGH  0x8000000000000000LL
#	define FRACHIGH2 0xc000000000000000LL
#	define pack_d __pack_d
#	define unpack_d __unpack_d
#	define __fpcmp_parts __fpcmp_parts_d
	typedef UDItype fractype;
	typedef USItype halffractype;
	typedef DFtype FLO_type;
	typedef DItype intfrac;
#endif /* FLOAT */

#ifdef TFLOAT
#	define add 		__addtf3
#	define sub 		__subtf3
#	define multiply 	__multf3
#	define divide 		__divtf3
#	define compare 		__cmptf2
#	define _eq_f2 		__eqtf2
#	define _ne_f2 		__netf2
#	define _gt_f2 		__gttf2
#	define _ge_f2 		__getf2
#	define _lt_f2 		__lttf2
#	define _le_f2 		__letf2
#	define _unord_f2	__unordtf2
#	define usi_to_float 	__floatunsitf
#	define si_to_float 	__floatsitf
#	define float_to_si 	__fixtfsi
#	define float_to_usi 	__fixunstfsi
#	define negate 		__negtf2
#	define tf_to_sf		__trunctfsf2
#	define tf_to_df		__trunctfdf2
#elif defined FLOAT
#	define add 		__addsf3
#	define sub 		__subsf3
#	define multiply 	__mulsf3
#	define divide 		__divsf3
#	define compare 		__cmpsf2
#	define _eq_f2 		__eqsf2
#	define _ne_f2 		__nesf2
#	define _gt_f2 		__gtsf2
#	define _ge_f2 		__gesf2
#	define _lt_f2 		__ltsf2
#	define _le_f2 		__lesf2
#	define _unord_f2	__unordsf2
#	define usi_to_float 	__floatunsisf
#	define si_to_float 	__floatsisf
#	define float_to_si 	__fixsfsi
#	define float_to_usi 	__fixunssfsi
#	define negate 		__negsf2
#	define sf_to_df		__extendsfdf2
#	define sf_to_tf		__extendsftf2
#else
#	define add 		__adddf3
#	define sub 		__subdf3
#	define multiply 	__muldf3
#	define divide 		__divdf3
#	define compare 		__cmpdf2
#	define _eq_f2 		__eqdf2
#	define _ne_f2 		__nedf2
#	define _gt_f2 		__gtdf2
#	define _ge_f2 		__gedf2
#	define _lt_f2 		__ltdf2
#	define _le_f2 		__ledf2
#	define _unord_f2	__unorddf2
#	define usi_to_float 	__floatunsidf
#	define si_to_float 	__floatsidf
#	define float_to_si 	__fixdfsi
#	define float_to_usi 	__fixunsdfsi
#	define negate 		__negdf2
#	define df_to_sf		__truncdfsf2
#	define df_to_tf		__extenddftf2
#endif /* FLOAT */

#ifndef INLINE
#define INLINE __inline__
#endif

/* Preserve the sticky-bit when shifting fractions to the right.  */
#define LSHIFT(a, s) { a = (a >> s) | !!(a & (((fractype) 1 << s) - 1)); }

/* numeric parameters */
/* F_D_BITOFF is the number of bits offset between the MSB of the mantissa
   of a float and of a double. Assumes there are only two float types.
   (double::FRAC_BITS+double::NGARDS-(float::FRAC_BITS+float::NGARDS))
 */
#define F_D_BITOFF (52+8-(23+7))

#ifdef TMODES
# define F_T_BITOFF (__LDBL_MANT_DIG__-1+10-(23+7))
# define D_T_BITOFF (__LDBL_MANT_DIG__-1+10-(52+8))
#endif


#define NORMAL_EXPMIN (-(EXPBIAS)+1)
#define IMPLICIT_1 ((fractype)1<<(FRACBITS+NGARDS))
#define IMPLICIT_2 ((fractype)1<<(FRACBITS+1+NGARDS))

/* common types */

typedef enum
{
  CLASS_SNAN,
  CLASS_QNAN,
  CLASS_ZERO,
  CLASS_NUMBER,
  CLASS_INFINITY
} fp_class_type;

typedef struct
{
#ifdef SMALL_MACHINE
  char class;
  unsigned char sign;
  short normal_exp;
#else
  fp_class_type class;
  unsigned int sign;
  int normal_exp;
#endif

  union
    {
      fractype ll;
      halffractype l[2];
    } fraction;
} fp_number_type;

typedef union
{
  FLO_type value;
  fractype value_raw;

#ifndef FLOAT
# ifdef qrtrfractype
  qrtrfractype qwords[4];
# else
  halffractype words[2];
# endif
#endif

#ifdef FLOAT_BIT_ORDER_MISMATCH
  struct
    {
      fractype fraction:FRACBITS __attribute__ ((packed));
      unsigned int exp:EXPBITS __attribute__ ((packed));
      unsigned int sign:1 __attribute__ ((packed));
    }
  bits;
#endif

#ifdef _DEBUG_BITFLOAT
  struct
    {
      unsigned int sign:1 __attribute__ ((packed));
      unsigned int exp:EXPBITS __attribute__ ((packed));
      fractype fraction:FRACBITS __attribute__ ((packed));
    }
  bits_big_endian;

  struct
    {
      fractype fraction:FRACBITS __attribute__ ((packed));
      unsigned int exp:EXPBITS __attribute__ ((packed));
      unsigned int sign:1 __attribute__ ((packed));
    }
  bits_little_endian;
#endif
}
FLO_union_type;

/* Prototypes.  */

#if defined(L_pack_df) || defined(L_pack_sf) || defined(L_pack_tf)
extern FLO_type pack_d (const fp_number_type *);
#endif

extern void unpack_d (FLO_union_type *, fp_number_type *);

#if defined(L_addsub_sf) || defined(L_addsub_df) || defined(L_addsub_tf)
extern FLO_type add (FLO_type, FLO_type);
extern FLO_type sub (FLO_type, FLO_type);
#endif

#if defined(L_mul_sf) || defined(L_mul_df) || defined(L_mul_tf)
extern FLO_type multiply (FLO_type, FLO_type);
#endif

#if defined(L_div_sf) || defined(L_div_df) || defined(L_div_tf)
extern FLO_type divide (FLO_type, FLO_type);
#endif

extern int __fpcmp_parts (fp_number_type *, fp_number_type *);

#if defined(L_compare_sf) || defined(L_compare_df) || defined(L_compare_tf)
extern CMPtype compare (FLO_type, FLO_type);
#endif

#if defined(L_eq_sf) || defined(L_eq_df) || defined(L_eq_tf)
extern CMPtype _eq_f2 (FLO_type, FLO_type);
#endif

#if defined(L_ne_sf) || defined(L_ne_df) || defined(L_ne_tf)
extern CMPtype _ne_f2 (FLO_type, FLO_type);
#endif

#if defined(L_gt_sf) || defined(L_gt_df) || defined(L_gt_tf)
extern CMPtype _gt_f2 (FLO_type, FLO_type);
#endif

#if defined(L_ge_sf) || defined(L_ge_df) || defined(L_ge_tf)
extern CMPtype _ge_f2 (FLO_type, FLO_type);
#endif

#if defined(L_lt_sf) || defined(L_lt_df) || defined(L_lt_tf)
extern CMPtype _lt_f2 (FLO_type, FLO_type);
#endif

#if defined(L_le_sf) || defined(L_le_df) || defined(L_le_tf)
extern CMPtype _le_f2 (FLO_type, FLO_type);
#endif

#if defined(L_unord_sf) || defined(L_unord_df) || defined(L_unord_tf)
extern CMPtype _unord_f2 (FLO_type, FLO_type);
#endif

#if defined(L_si_to_sf) || defined(L_si_to_df) || defined(L_si_to_tf)
extern FLO_type si_to_float (SItype);
#endif

#if defined(L_sf_to_si) || defined(L_df_to_si) || defined(L_tf_to_si)
extern SItype float_to_si (FLO_type);
#endif

#if defined(L_tf_to_usi)
extern USItype float_to_usi (FLO_type);
#endif

#if defined(L_usi_to_sf) || defined(L_usi_to_df) || defined(L_usi_to_tf)
extern FLO_type usi_to_float (USItype);
#endif

#if defined(L_negate_sf) || defined(L_negate_df) || defined(L_negate_tf)
extern FLO_type negate (FLO_type);
#endif

#ifdef FLOAT
#if defined(L_make_sf)
extern SFtype __make_fp (fp_class_type, unsigned int, int, USItype);
#endif
#ifndef FLOAT_ONLY
extern DFtype __make_dp (fp_class_type, unsigned int, int, UDItype);
#if defined(L_sf_to_df)
extern DFtype sf_to_df (SFtype);
#endif
#if defined(L_sf_to_tf) && defined(TMODES)
extern TFtype sf_to_tf (SFtype);
#endif
#endif /* ! FLOAT_ONLY */
#endif /* FLOAT */

#ifndef FLOAT
extern SFtype __make_fp (fp_class_type, unsigned int, int, USItype);
#if defined(L_make_df)
extern DFtype __make_dp (fp_class_type, unsigned int, int, UDItype);
#endif
#if defined(L_df_to_sf)
extern SFtype df_to_sf (DFtype);
#endif
#if defined(L_df_to_tf) && defined(TMODES)
extern TFtype df_to_tf (DFtype);
#endif
#endif /* ! FLOAT */

#ifdef TMODES
extern DFtype __make_dp (fp_class_type, unsigned int, int, UDItype);
extern TFtype __make_tp (fp_class_type, unsigned int, int, UTItype);
#ifdef TFLOAT
#if defined(L_tf_to_sf)
extern SFtype tf_to_sf (TFtype);
#endif
#if defined(L_tf_to_df)
extern DFtype tf_to_df (TFtype);
#endif
#if defined(L_di_to_tf)
extern TFtype di_to_df (DItype);
#endif
#endif /* TFLOAT */
#endif /* TMODES */

#endif /* ! GCC_FP_BIT_H */
Commit	Line	Data
f52117db	1	/* Header file for fp-bit.c. */
fbd26352	2	/* Copyright (C) 2000-2019 Free Software Foundation, Inc.
f52117db	3
187b36cf	4	This file is part of GCC.
f52117db	5
b1825ae2	6	GCC is free software; you can redistribute it and/or modify it under
b1825ae2	7	the terms of the GNU General Public License as published by the Free
6bc9506f	8	Software Foundation; either version 3, or (at your option) any later
b1825ae2	9	version.
b1825ae2	10
b1825ae2	11	GCC is distributed in the hope that it will be useful, but WITHOUT ANY
	12	WARRANTY; without even the implied warranty of MERCHANTABILITY or
	13	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	14	for more details.
f52117db	15
6bc9506f	16	Under Section 7 of GPL version 3, you are granted additional
	17	permissions described in the GCC Runtime Library Exception, version
	18	3.1, as published by the Free Software Foundation.
	19
	20	You should have received a copy of the GNU General Public License and
	21	a copy of the GCC Runtime Library Exception along with this program;
	22	see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
	23	<http://www.gnu.org/licenses/>. */
f52117db	24
2a281353	25	#ifndef GCC_FP_BIT_H
2a281353	26	#define GCC_FP_BIT_H
f52117db	27
	28	/* Defining FINE_GRAINED_LIBRARIES allows one to select which routines
	29	from this file are compiled via additional -D options.
	30
	31	This avoids the need to pull in the entire fp emulation library
	32	when only a small number of functions are needed.
	33
8e0db77e	34	If FINE_GRAINED_LIBRARIES is not defined, then compile every
f52117db	35	suitable routine. */
	36	#ifndef FINE_GRAINED_LIBRARIES
	37	#define L_pack_df
	38	#define L_unpack_df
	39	#define L_pack_sf
	40	#define L_unpack_sf
	41	#define L_addsub_sf
	42	#define L_addsub_df
	43	#define L_mul_sf
	44	#define L_mul_df
	45	#define L_div_sf
	46	#define L_div_df
	47	#define L_fpcmp_parts_sf
	48	#define L_fpcmp_parts_df
	49	#define L_compare_sf
	50	#define L_compare_df
	51	#define L_eq_sf
	52	#define L_eq_df
	53	#define L_ne_sf
	54	#define L_ne_df
	55	#define L_gt_sf
	56	#define L_gt_df
	57	#define L_ge_sf
	58	#define L_ge_df
	59	#define L_lt_sf
	60	#define L_lt_df
	61	#define L_le_sf
	62	#define L_le_df
	63	#define L_unord_sf
	64	#define L_unord_df
320f29dc	65	#define L_usi_to_sf
320f29dc	66	#define L_usi_to_df
f52117db	67	#define L_si_to_sf
	68	#define L_si_to_df
	69	#define L_sf_to_si
	70	#define L_df_to_si
	71	#define L_f_to_usi
	72	#define L_df_to_usi
	73	#define L_negate_sf
	74	#define L_negate_df
	75	#define L_make_sf
	76	#define L_make_df
	77	#define L_sf_to_df
	78	#define L_df_to_sf
	79	#ifdef FLOAT
	80	#define L_thenan_sf
	81	#else
	82	#define L_thenan_df
	83	#endif
	84	#endif /* ! FINE_GRAINED_LIBRARIES */
	85
199bff55	86	#if __LDBL_MANT_DIG__ == 113 \|\| __LDBL_MANT_DIG__ == 106
baad77c2	87	# if defined(TFLOAT) \|\| defined(L_sf_to_tf) \|\| defined(L_df_to_tf)
	88	# define TMODES
	89	# endif
5b7344c7	90	#endif
5b7344c7	91
f52117db	92	typedef float SFtype __attribute__ ((mode (SF)));
f52117db	93	typedef float DFtype __attribute__ ((mode (DF)));
5b7344c7	94	#ifdef TMODES
	95	typedef float TFtype __attribute__ ((mode (TF)));
	96	#endif
f52117db	97
	98	typedef int HItype __attribute__ ((mode (HI)));
	99	typedef int SItype __attribute__ ((mode (SI)));
	100	typedef int DItype __attribute__ ((mode (DI)));
5b7344c7	101	#ifdef TMODES
	102	typedef int TItype __attribute__ ((mode (TI)));
	103	#endif
f52117db	104
edc6a305	105	/* The type of the result of a floating point comparison. This must
ea32e033	106	match `__libgcc_cmp_return__' in GCC for the target. */
f52117db	107	#ifndef CMPtype
ea32e033	108	typedef int CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
f52117db	109	#endif
	110
	111	typedef unsigned int UHItype __attribute__ ((mode (HI)));
	112	typedef unsigned int USItype __attribute__ ((mode (SI)));
	113	typedef unsigned int UDItype __attribute__ ((mode (DI)));
5b7344c7	114	#ifdef TMODES
	115	typedef unsigned int UTItype __attribute__ ((mode (TI)));
	116	#endif
f52117db	117
ec7a9913	118	#define MAX_USI_INT (~(USItype)0)
ec7a9913	119	#define MAX_SI_INT ((SItype) (MAX_USI_INT >> 1))
d2dc729f	120	#define BITS_PER_SI (4 * __CHAR_BIT__)
5b7344c7	121	#ifdef TMODES
	122	#define MAX_UDI_INT (~(UDItype)0)
	123	#define MAX_DI_INT ((DItype) (MAX_UDI_INT >> 1))
d2dc729f	124	#define BITS_PER_DI (8 * __CHAR_BIT__)
5b7344c7	125	#endif
f52117db	126
	127	#ifdef FLOAT_ONLY
	128	#define NO_DI_MODE
	129	#endif
	130
a23b9c51	131	#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
	132	#define FLOAT_BIT_ORDER_MISMATCH
	133	#endif
	134
	135	#if __BYTE_ORDER__ != __FLOAT_WORD_ORDER__
	136	#define FLOAT_WORD_ORDER_MISMATCH
	137	#endif
	138
5b7344c7	139	#ifdef TFLOAT
	140	# ifndef TMODES
	141	# error "TFLOAT requires long double to have 113 bits of mantissa"
	142	# endif
	143
	144	# define PREFIXFPDP tp
	145	# define PREFIXSFDF tf
	146	# define NGARDS 10L /* Is this right? */
	147	# define GARDROUND 0x1ff
	148	# define GARDMASK 0x3ff
	149	# define GARDMSB 0x200
	150	# define FRAC_NBITS 128
	151
	152	# if __LDBL_MANT_DIG__ == 113 /* IEEE quad */
	153	# define EXPBITS 15
	154	# define EXPBIAS 16383
	155	# define EXPMAX (0x7fff)
	156	# define QUIET_NAN ((TItype)0x8 << 108)
	157	# define FRACHIGH ((TItype)0x8 << 124)
	158	# define FRACHIGH2 ((TItype)0xc << 124)
	159	# define FRACBITS 112
	160	# endif
	161
199bff55	162	# if __LDBL_MANT_DIG__ == 106 /* IBM extended (double+double) */
	163	# define EXPBITS 11
	164	# define EXPBIAS 1023
	165	# define EXPMAX (0x7ff)
	166	# define QUIET_NAN ((TItype)0x8 << (48 + 64))
	167	# define FRACHIGH ((TItype)0x8 << 124)
	168	# define FRACHIGH2 ((TItype)0xc << 124)
	169	# define FRACBITS 105
	170	# define HALFFRACBITS 52
	171	# define HALFSHIFT 64
	172	# endif
	173
5b7344c7	174	# define pack_d __pack_t
	175	# define unpack_d __unpack_t
	176	# define __fpcmp_parts __fpcmp_parts_t
	177	typedef UTItype fractype;
	178	typedef UDItype halffractype;
	179	typedef USItype qrtrfractype;
	180	#define qrtrfractype qrtrfractype
	181	typedef TFtype FLO_type;
	182	typedef TItype intfrac;
	183	#elif defined FLOAT
f52117db	184	# define NGARDS 7L
	185	# define GARDROUND 0x3f
	186	# define GARDMASK 0x7f
	187	# define GARDMSB 0x40
	188	# define EXPBITS 8
	189	# define EXPBIAS 127
	190	# define FRACBITS 23
	191	# define EXPMAX (0xff)
9e849aff	192	# define QUIET_NAN 0x400000L
f52117db	193	# define FRAC_NBITS 32
	194	# define FRACHIGH 0x80000000L
	195	# define FRACHIGH2 0xc0000000L
	196	# define pack_d __pack_f
	197	# define unpack_d __unpack_f
	198	# define __fpcmp_parts __fpcmp_parts_f
	199	typedef USItype fractype;
	200	typedef UHItype halffractype;
	201	typedef SFtype FLO_type;
	202	typedef SItype intfrac;
	203
	204	#else
	205	# define PREFIXFPDP dp
	206	# define PREFIXSFDF df
	207	# define NGARDS 8L
	208	# define GARDROUND 0x7f
	209	# define GARDMASK 0xff
	210	# define GARDMSB 0x80
	211	# define EXPBITS 11
	212	# define EXPBIAS 1023
	213	# define FRACBITS 52
	214	# define EXPMAX (0x7ff)
	215	# define QUIET_NAN 0x8000000000000LL
	216	# define FRAC_NBITS 64
	217	# define FRACHIGH 0x8000000000000000LL
	218	# define FRACHIGH2 0xc000000000000000LL
	219	# define pack_d __pack_d
	220	# define unpack_d __unpack_d
	221	# define __fpcmp_parts __fpcmp_parts_d
	222	typedef UDItype fractype;
	223	typedef USItype halffractype;
	224	typedef DFtype FLO_type;
	225	typedef DItype intfrac;
	226	#endif /* FLOAT */
	227
1d88eb71	228	#ifdef TFLOAT
	229	# define add __addtf3
	230	# define sub __subtf3
	231	# define multiply __multf3
	232	# define divide __divtf3
	233	# define compare __cmptf2
	234	# define _eq_f2 __eqtf2
	235	# define _ne_f2 __netf2
	236	# define _gt_f2 __gttf2
	237	# define _ge_f2 __getf2
	238	# define _lt_f2 __lttf2
	239	# define _le_f2 __letf2
	240	# define _unord_f2 __unordtf2
	241	# define usi_to_float __floatunsitf
	242	# define si_to_float __floatsitf
	243	# define float_to_si __fixtfsi
	244	# define float_to_usi __fixunstfsi
	245	# define negate __negtf2
	246	# define tf_to_sf __trunctfsf2
	247	# define tf_to_df __trunctfdf2
	248	#elif defined FLOAT
	249	# define add __addsf3
	250	# define sub __subsf3
	251	# define multiply __mulsf3
	252	# define divide __divsf3
	253	# define compare __cmpsf2
	254	# define _eq_f2 __eqsf2
	255	# define _ne_f2 __nesf2
	256	# define _gt_f2 __gtsf2
	257	# define _ge_f2 __gesf2
	258	# define _lt_f2 __ltsf2
	259	# define _le_f2 __lesf2
	260	# define _unord_f2 __unordsf2
	261	# define usi_to_float __floatunsisf
	262	# define si_to_float __floatsisf
	263	# define float_to_si __fixsfsi
	264	# define float_to_usi __fixunssfsi
	265	# define negate __negsf2
	266	# define sf_to_df __extendsfdf2
	267	# define sf_to_tf __extendsftf2
f52117db	268	#else
1d88eb71	269	# define add __adddf3
	270	# define sub __subdf3
	271	# define multiply __muldf3
	272	# define divide __divdf3
	273	# define compare __cmpdf2
	274	# define _eq_f2 __eqdf2
	275	# define _ne_f2 __nedf2
	276	# define _gt_f2 __gtdf2
	277	# define _ge_f2 __gedf2
	278	# define _lt_f2 __ltdf2
	279	# define _le_f2 __ledf2
	280	# define _unord_f2 __unorddf2
	281	# define usi_to_float __floatunsidf
	282	# define si_to_float __floatsidf
	283	# define float_to_si __fixdfsi
	284	# define float_to_usi __fixunsdfsi
	285	# define negate __negdf2
	286	# define df_to_sf __truncdfsf2
	287	# define df_to_tf __extenddftf2
	288	#endif /* FLOAT */
f52117db	289
	290	#ifndef INLINE
	291	#define INLINE __inline__
	292	#endif
	293
	294	/* Preserve the sticky-bit when shifting fractions to the right. */
2a33161d	295	#define LSHIFT(a, s) { a = (a >> s) \| !!(a & (((fractype) 1 << s) - 1)); }
f52117db	296
	297	/* numeric parameters */
	298	/* F_D_BITOFF is the number of bits offset between the MSB of the mantissa
	299	of a float and of a double. Assumes there are only two float types.
dfa9a36a	300	(double::FRAC_BITS+double::NGARDS-(float::FRAC_BITS+float::NGARDS))
f52117db	301	*/
	302	#define F_D_BITOFF (52+8-(23+7))
	303
5b7344c7	304	#ifdef TMODES
	305	# define F_T_BITOFF (__LDBL_MANT_DIG__-1+10-(23+7))
	306	# define D_T_BITOFF (__LDBL_MANT_DIG__-1+10-(52+8))
	307	#endif
	308
f52117db	309
f52117db	310	#define NORMAL_EXPMIN (-(EXPBIAS)+1)
5b7344c7	311	#define IMPLICIT_1 ((fractype)1<<(FRACBITS+NGARDS))
5b7344c7	312	#define IMPLICIT_2 ((fractype)1<<(FRACBITS+1+NGARDS))
f52117db	313
	314	/* common types */
	315
	316	typedef enum
	317	{
	318	CLASS_SNAN,
	319	CLASS_QNAN,
	320	CLASS_ZERO,
	321	CLASS_NUMBER,
	322	CLASS_INFINITY
	323	} fp_class_type;
	324
	325	typedef struct
	326	{
	327	#ifdef SMALL_MACHINE
	328	char class;
	329	unsigned char sign;
	330	short normal_exp;
	331	#else
	332	fp_class_type class;
	333	unsigned int sign;
	334	int normal_exp;
	335	#endif
	336
	337	union
	338	{
	339	fractype ll;
	340	halffractype l[2];
	341	} fraction;
	342	} fp_number_type;
	343
	344	typedef union
	345	{
	346	FLO_type value;
	347	fractype value_raw;
	348
	349	#ifndef FLOAT
5b7344c7	350	# ifdef qrtrfractype
	351	qrtrfractype qwords[4];
	352	# else
f52117db	353	halffractype words[2];
5b7344c7	354	# endif
f52117db	355	#endif
	356
	357	#ifdef FLOAT_BIT_ORDER_MISMATCH
	358	struct
	359	{
	360	fractype fraction:FRACBITS __attribute__ ((packed));
	361	unsigned int exp:EXPBITS __attribute__ ((packed));
	362	unsigned int sign:1 __attribute__ ((packed));
	363	}
	364	bits;
	365	#endif
	366
	367	#ifdef _DEBUG_BITFLOAT
	368	struct
	369	{
	370	unsigned int sign:1 __attribute__ ((packed));
	371	unsigned int exp:EXPBITS __attribute__ ((packed));
	372	fractype fraction:FRACBITS __attribute__ ((packed));
	373	}
	374	bits_big_endian;
	375
	376	struct
	377	{
	378	fractype fraction:FRACBITS __attribute__ ((packed));
	379	unsigned int exp:EXPBITS __attribute__ ((packed));
	380	unsigned int sign:1 __attribute__ ((packed));
	381	}
	382	bits_little_endian;
	383	#endif
	384	}
	385	FLO_union_type;
	386
5c8520a4	387	/* Prototypes. */
f52117db	388
5b7344c7	389	#if defined(L_pack_df) \|\| defined(L_pack_sf) \|\| defined(L_pack_tf)
5c8520a4	390	extern FLO_type pack_d (const fp_number_type *);
f52117db	391	#endif
	392
	393	extern void unpack_d (FLO_union_type , fp_number_type );
	394
5b7344c7	395	#if defined(L_addsub_sf) \|\| defined(L_addsub_df) \|\| defined(L_addsub_tf)
f52117db	396	extern FLO_type add (FLO_type, FLO_type);
	397	extern FLO_type sub (FLO_type, FLO_type);
	398	#endif
	399
5b7344c7	400	#if defined(L_mul_sf) \|\| defined(L_mul_df) \|\| defined(L_mul_tf)
f52117db	401	extern FLO_type multiply (FLO_type, FLO_type);
	402	#endif
	403
5b7344c7	404	#if defined(L_div_sf) \|\| defined(L_div_df) \|\| defined(L_div_tf)
f52117db	405	extern FLO_type divide (FLO_type, FLO_type);
	406	#endif
	407
	408	extern int __fpcmp_parts (fp_number_type , fp_number_type );
	409
5b7344c7	410	#if defined(L_compare_sf) \|\| defined(L_compare_df) \|\| defined(L_compare_tf)
f52117db	411	extern CMPtype compare (FLO_type, FLO_type);
	412	#endif
	413
5b7344c7	414	#if defined(L_eq_sf) \|\| defined(L_eq_df) \|\| defined(L_eq_tf)
f52117db	415	extern CMPtype _eq_f2 (FLO_type, FLO_type);
	416	#endif
	417
5b7344c7	418	#if defined(L_ne_sf) \|\| defined(L_ne_df) \|\| defined(L_ne_tf)
f52117db	419	extern CMPtype _ne_f2 (FLO_type, FLO_type);
	420	#endif
	421
5b7344c7	422	#if defined(L_gt_sf) \|\| defined(L_gt_df) \|\| defined(L_gt_tf)
f52117db	423	extern CMPtype _gt_f2 (FLO_type, FLO_type);
	424	#endif
	425
5b7344c7	426	#if defined(L_ge_sf) \|\| defined(L_ge_df) \|\| defined(L_ge_tf)
f52117db	427	extern CMPtype _ge_f2 (FLO_type, FLO_type);
	428	#endif
	429
5b7344c7	430	#if defined(L_lt_sf) \|\| defined(L_lt_df) \|\| defined(L_lt_tf)
f52117db	431	extern CMPtype _lt_f2 (FLO_type, FLO_type);
	432	#endif
	433
5b7344c7	434	#if defined(L_le_sf) \|\| defined(L_le_df) \|\| defined(L_le_tf)
f52117db	435	extern CMPtype _le_f2 (FLO_type, FLO_type);
	436	#endif
	437
5b7344c7	438	#if defined(L_unord_sf) \|\| defined(L_unord_df) \|\| defined(L_unord_tf)
f52117db	439	extern CMPtype _unord_f2 (FLO_type, FLO_type);
	440	#endif
	441
5b7344c7	442	#if defined(L_si_to_sf) \|\| defined(L_si_to_df) \|\| defined(L_si_to_tf)
f52117db	443	extern FLO_type si_to_float (SItype);
	444	#endif
	445
5b7344c7	446	#if defined(L_sf_to_si) \|\| defined(L_df_to_si) \|\| defined(L_tf_to_si)
f52117db	447	extern SItype float_to_si (FLO_type);
	448	#endif
	449
1d88eb71	450	#if defined(L_tf_to_usi)
f52117db	451	extern USItype float_to_usi (FLO_type);
f52117db	452	#endif
f52117db	453
5b7344c7	454	#if defined(L_usi_to_sf) \|\| defined(L_usi_to_df) \|\| defined(L_usi_to_tf)
a23072e2	455	extern FLO_type usi_to_float (USItype);
	456	#endif
	457
5b7344c7	458	#if defined(L_negate_sf) \|\| defined(L_negate_df) \|\| defined(L_negate_tf)
f52117db	459	extern FLO_type negate (FLO_type);
	460	#endif
	461
	462	#ifdef FLOAT
	463	#if defined(L_make_sf)
	464	extern SFtype __make_fp (fp_class_type, unsigned int, int, USItype);
	465	#endif
	466	#ifndef FLOAT_ONLY
	467	extern DFtype __make_dp (fp_class_type, unsigned int, int, UDItype);
	468	#if defined(L_sf_to_df)
	469	extern DFtype sf_to_df (SFtype);
	470	#endif
5b7344c7	471	#if defined(L_sf_to_tf) && defined(TMODES)
	472	extern TFtype sf_to_tf (SFtype);
	473	#endif
f52117db	474	#endif /* ! FLOAT_ONLY */
	475	#endif /* FLOAT */
	476
	477	#ifndef FLOAT
	478	extern SFtype __make_fp (fp_class_type, unsigned int, int, USItype);
	479	#if defined(L_make_df)
	480	extern DFtype __make_dp (fp_class_type, unsigned int, int, UDItype);
	481	#endif
	482	#if defined(L_df_to_sf)
	483	extern SFtype df_to_sf (DFtype);
	484	#endif
5b7344c7	485	#if defined(L_df_to_tf) && defined(TMODES)
	486	extern TFtype df_to_tf (DFtype);
	487	#endif
f52117db	488	#endif /* ! FLOAT */
f52117db	489
5b7344c7	490	#ifdef TMODES
e8899d83	491	extern DFtype __make_dp (fp_class_type, unsigned int, int, UDItype);
5b7344c7	492	extern TFtype __make_tp (fp_class_type, unsigned int, int, UTItype);
	493	#ifdef TFLOAT
	494	#if defined(L_tf_to_sf)
	495	extern SFtype tf_to_sf (TFtype);
	496	#endif
	497	#if defined(L_tf_to_df)
	498	extern DFtype tf_to_df (TFtype);
	499	#endif
	500	#if defined(L_di_to_tf)
	501	extern TFtype di_to_df (DItype);
	502	#endif
	503	#endif /* TFLOAT */
	504	#endif /* TMODES */
	505
2a281353	506	#endif /* ! GCC_FP_BIT_H */