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

/* Header file for fp-bit.c.  */
/* Copyright (C) 2000-2020 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__ != __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 _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
cb4b535d	1	/* Header file for fp-bit.c. */
8d9254fc	2	/* Copyright (C) 2000-2020 Free Software Foundation, Inc.
cb4b535d	3
7ec022b2	4	This file is part of GCC.
cb4b535d	5
9c3b204a BE	6	GCC is free software; you can redistribute it and/or modify it under
9c3b204a BE	7	the terms of the GNU General Public License as published by the Free
748086b7	8	Software Foundation; either version 3, or (at your option) any later
9c3b204a BE	9	version.
9c3b204a BE	10
9c3b204a BE	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.
cb4b535d	15
748086b7 JJ	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/>. */
cb4b535d	24
88657302 RH	25	#ifndef GCC_FP_BIT_H
88657302 RH	26	#define GCC_FP_BIT_H
cb4b535d KG	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
c894819c	34	If FINE_GRAINED_LIBRARIES is not defined, then compile every
cb4b535d KG	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
dfaf3cdb SC	65	#define L_usi_to_sf
dfaf3cdb SC	66	#define L_usi_to_df
cb4b535d KG	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
b44cf3d9	86	#if __LDBL_MANT_DIG__ == 113 \|\| __LDBL_MANT_DIG__ == 106
602ea4d3 JJ	87	# if defined(TFLOAT) \|\| defined(L_sf_to_tf) \|\| defined(L_df_to_tf)
	88	# define TMODES
	89	# endif
ea976606 AO	90	#endif
ea976606 AO	91
cb4b535d KG	92	typedef float SFtype __attribute__ ((mode (SF)));
cb4b535d KG	93	typedef float DFtype __attribute__ ((mode (DF)));
ea976606 AO	94	#ifdef TMODES
	95	typedef float TFtype __attribute__ ((mode (TF)));
	96	#endif
cb4b535d KG	97
	98	typedef int HItype __attribute__ ((mode (HI)));
	99	typedef int SItype __attribute__ ((mode (SI)));
	100	typedef int DItype __attribute__ ((mode (DI)));
ea976606 AO	101	#ifdef TMODES
	102	typedef int TItype __attribute__ ((mode (TI)));
	103	#endif
cb4b535d	104
c18f0c26	105	/* The type of the result of a floating point comparison. This must
7fecf2c7	106	match `__libgcc_cmp_return__' in GCC for the target. */
cb4b535d	107	#ifndef CMPtype
7fecf2c7	108	typedef int CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
cb4b535d KG	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)));
ea976606 AO	114	#ifdef TMODES
	115	typedef unsigned int UTItype __attribute__ ((mode (TI)));
	116	#endif
cb4b535d	117
483b9fd0 AO	118	#define MAX_USI_INT (~(USItype)0)
483b9fd0 AO	119	#define MAX_SI_INT ((SItype) (MAX_USI_INT >> 1))
a153644f	120	#define BITS_PER_SI (4 * __CHAR_BIT__)
ea976606 AO	121	#ifdef TMODES
	122	#define MAX_UDI_INT (~(UDItype)0)
	123	#define MAX_DI_INT ((DItype) (MAX_UDI_INT >> 1))
a153644f	124	#define BITS_PER_DI (8 * __CHAR_BIT__)
ea976606	125	#endif
cb4b535d KG	126
	127	#ifdef FLOAT_ONLY
	128	#define NO_DI_MODE
	129	#endif
	130
569dc494 RO	131	#if __BYTE_ORDER__ != __FLOAT_WORD_ORDER__
	132	#define FLOAT_WORD_ORDER_MISMATCH
	133	#endif
	134
ea976606 AO	135	#ifdef TFLOAT
	136	# ifndef TMODES
	137	# error "TFLOAT requires long double to have 113 bits of mantissa"
	138	# endif
	139
	140	# define PREFIXFPDP tp
	141	# define PREFIXSFDF tf
	142	# define NGARDS 10L /* Is this right? */
	143	# define GARDROUND 0x1ff
	144	# define GARDMASK 0x3ff
	145	# define GARDMSB 0x200
	146	# define FRAC_NBITS 128
	147
	148	# if __LDBL_MANT_DIG__ == 113 /* IEEE quad */
	149	# define EXPBITS 15
	150	# define EXPBIAS 16383
	151	# define EXPMAX (0x7fff)
	152	# define QUIET_NAN ((TItype)0x8 << 108)
	153	# define FRACHIGH ((TItype)0x8 << 124)
	154	# define FRACHIGH2 ((TItype)0xc << 124)
	155	# define FRACBITS 112
	156	# endif
	157
b44cf3d9 AO	158	# if __LDBL_MANT_DIG__ == 106 /* IBM extended (double+double) */
	159	# define EXPBITS 11
	160	# define EXPBIAS 1023
	161	# define EXPMAX (0x7ff)
	162	# define QUIET_NAN ((TItype)0x8 << (48 + 64))
	163	# define FRACHIGH ((TItype)0x8 << 124)
	164	# define FRACHIGH2 ((TItype)0xc << 124)
	165	# define FRACBITS 105
	166	# define HALFFRACBITS 52
	167	# define HALFSHIFT 64
	168	# endif
	169
ea976606 AO	170	# define pack_d __pack_t
	171	# define unpack_d __unpack_t
	172	# define __fpcmp_parts __fpcmp_parts_t
	173	typedef UTItype fractype;
	174	typedef UDItype halffractype;
	175	typedef USItype qrtrfractype;
	176	#define qrtrfractype qrtrfractype
	177	typedef TFtype FLO_type;
	178	typedef TItype intfrac;
	179	#elif defined FLOAT
cb4b535d KG	180	# define NGARDS 7L
	181	# define GARDROUND 0x3f
	182	# define GARDMASK 0x7f
	183	# define GARDMSB 0x40
	184	# define EXPBITS 8
	185	# define EXPBIAS 127
	186	# define FRACBITS 23
	187	# define EXPMAX (0xff)
701e2f0a	188	# define QUIET_NAN 0x400000L
cb4b535d KG	189	# define FRAC_NBITS 32
	190	# define FRACHIGH 0x80000000L
	191	# define FRACHIGH2 0xc0000000L
	192	# define pack_d __pack_f
	193	# define unpack_d __unpack_f
	194	# define __fpcmp_parts __fpcmp_parts_f
	195	typedef USItype fractype;
	196	typedef UHItype halffractype;
	197	typedef SFtype FLO_type;
	198	typedef SItype intfrac;
	199
	200	#else
	201	# define PREFIXFPDP dp
	202	# define PREFIXSFDF df
	203	# define NGARDS 8L
	204	# define GARDROUND 0x7f
	205	# define GARDMASK 0xff
	206	# define GARDMSB 0x80
	207	# define EXPBITS 11
	208	# define EXPBIAS 1023
	209	# define FRACBITS 52
	210	# define EXPMAX (0x7ff)
	211	# define QUIET_NAN 0x8000000000000LL
	212	# define FRAC_NBITS 64
	213	# define FRACHIGH 0x8000000000000000LL
	214	# define FRACHIGH2 0xc000000000000000LL
	215	# define pack_d __pack_d
	216	# define unpack_d __unpack_d
	217	# define __fpcmp_parts __fpcmp_parts_d
	218	typedef UDItype fractype;
	219	typedef USItype halffractype;
	220	typedef DFtype FLO_type;
	221	typedef DItype intfrac;
	222	#endif /* FLOAT */
	223
bd9c1f8f JM	224	#ifdef TFLOAT
	225	# define add __addtf3
	226	# define sub __subtf3
	227	# define multiply __multf3
	228	# define divide __divtf3
	229	# define compare __cmptf2
	230	# define _eq_f2 __eqtf2
	231	# define _ne_f2 __netf2
	232	# define _gt_f2 __gttf2
	233	# define _ge_f2 __getf2
	234	# define _lt_f2 __lttf2
	235	# define _le_f2 __letf2
	236	# define _unord_f2 __unordtf2
	237	# define usi_to_float __floatunsitf
	238	# define si_to_float __floatsitf
	239	# define float_to_si __fixtfsi
	240	# define float_to_usi __fixunstfsi
	241	# define negate __negtf2
	242	# define tf_to_sf __trunctfsf2
	243	# define tf_to_df __trunctfdf2
	244	#elif defined FLOAT
	245	# define add __addsf3
	246	# define sub __subsf3
	247	# define multiply __mulsf3
	248	# define divide __divsf3
	249	# define compare __cmpsf2
	250	# define _eq_f2 __eqsf2
	251	# define _ne_f2 __nesf2
	252	# define _gt_f2 __gtsf2
	253	# define _ge_f2 __gesf2
	254	# define _lt_f2 __ltsf2
	255	# define _le_f2 __lesf2
	256	# define _unord_f2 __unordsf2
	257	# define usi_to_float __floatunsisf
	258	# define si_to_float __floatsisf
	259	# define float_to_si __fixsfsi
	260	# define float_to_usi __fixunssfsi
	261	# define negate __negsf2
	262	# define sf_to_df __extendsfdf2
	263	# define sf_to_tf __extendsftf2
cb4b535d	264	#else
bd9c1f8f JM	265	# define add __adddf3
	266	# define sub __subdf3
	267	# define multiply __muldf3
	268	# define divide __divdf3
	269	# define compare __cmpdf2
	270	# define _eq_f2 __eqdf2
	271	# define _ne_f2 __nedf2
	272	# define _gt_f2 __gtdf2
	273	# define _ge_f2 __gedf2
	274	# define _lt_f2 __ltdf2
	275	# define _le_f2 __ledf2
	276	# define _unord_f2 __unorddf2
	277	# define usi_to_float __floatunsidf
	278	# define si_to_float __floatsidf
	279	# define float_to_si __fixdfsi
	280	# define float_to_usi __fixunsdfsi
	281	# define negate __negdf2
	282	# define df_to_sf __truncdfsf2
	283	# define df_to_tf __extenddftf2
	284	#endif /* FLOAT */
cb4b535d KG	285
	286	#ifndef INLINE
	287	#define INLINE __inline__
	288	#endif
	289
	290	/* Preserve the sticky-bit when shifting fractions to the right. */
e13dd54f	291	#define LSHIFT(a, s) { a = (a >> s) \| !!(a & (((fractype) 1 << s) - 1)); }
cb4b535d KG	292
	293	/* numeric parameters */
	294	/* F_D_BITOFF is the number of bits offset between the MSB of the mantissa
	295	of a float and of a double. Assumes there are only two float types.
e5123d08	296	(double::FRAC_BITS+double::NGARDS-(float::FRAC_BITS+float::NGARDS))
cb4b535d KG	297	*/
	298	#define F_D_BITOFF (52+8-(23+7))
	299
ea976606 AO	300	#ifdef TMODES
	301	# define F_T_BITOFF (__LDBL_MANT_DIG__-1+10-(23+7))
	302	# define D_T_BITOFF (__LDBL_MANT_DIG__-1+10-(52+8))
	303	#endif
	304
cb4b535d KG	305
cb4b535d KG	306	#define NORMAL_EXPMIN (-(EXPBIAS)+1)
ea976606 AO	307	#define IMPLICIT_1 ((fractype)1<<(FRACBITS+NGARDS))
ea976606 AO	308	#define IMPLICIT_2 ((fractype)1<<(FRACBITS+1+NGARDS))
cb4b535d KG	309
	310	/* common types */
	311
	312	typedef enum
	313	{
	314	CLASS_SNAN,
	315	CLASS_QNAN,
	316	CLASS_ZERO,
	317	CLASS_NUMBER,
	318	CLASS_INFINITY
	319	} fp_class_type;
	320
	321	typedef struct
	322	{
	323	#ifdef SMALL_MACHINE
	324	char class;
	325	unsigned char sign;
	326	short normal_exp;
	327	#else
	328	fp_class_type class;
	329	unsigned int sign;
	330	int normal_exp;
	331	#endif
	332
	333	union
	334	{
	335	fractype ll;
	336	halffractype l[2];
	337	} fraction;
	338	} fp_number_type;
	339
	340	typedef union
	341	{
	342	FLO_type value;
	343	fractype value_raw;
	344
	345	#ifndef FLOAT
ea976606 AO	346	# ifdef qrtrfractype
	347	qrtrfractype qwords[4];
	348	# else
cb4b535d	349	halffractype words[2];
ea976606	350	# endif
cb4b535d KG	351	#endif
cb4b535d KG	352
cb4b535d KG	353	#ifdef _DEBUG_BITFLOAT
	354	struct
	355	{
	356	unsigned int sign:1 __attribute__ ((packed));
	357	unsigned int exp:EXPBITS __attribute__ ((packed));
	358	fractype fraction:FRACBITS __attribute__ ((packed));
	359	}
	360	bits_big_endian;
	361
	362	struct
	363	{
	364	fractype fraction:FRACBITS __attribute__ ((packed));
	365	unsigned int exp:EXPBITS __attribute__ ((packed));
	366	unsigned int sign:1 __attribute__ ((packed));
	367	}
	368	bits_little_endian;
	369	#endif
	370	}
	371	FLO_union_type;
	372
7a7d8fab	373	/* Prototypes. */
cb4b535d	374
ea976606	375	#if defined(L_pack_df) \|\| defined(L_pack_sf) \|\| defined(L_pack_tf)
7a7d8fab	376	extern FLO_type pack_d (const fp_number_type *);
cb4b535d KG	377	#endif
	378
	379	extern void unpack_d (FLO_union_type , fp_number_type );
	380
ea976606	381	#if defined(L_addsub_sf) \|\| defined(L_addsub_df) \|\| defined(L_addsub_tf)
cb4b535d KG	382	extern FLO_type add (FLO_type, FLO_type);
	383	extern FLO_type sub (FLO_type, FLO_type);
	384	#endif
	385
ea976606	386	#if defined(L_mul_sf) \|\| defined(L_mul_df) \|\| defined(L_mul_tf)
cb4b535d KG	387	extern FLO_type multiply (FLO_type, FLO_type);
	388	#endif
	389
ea976606	390	#if defined(L_div_sf) \|\| defined(L_div_df) \|\| defined(L_div_tf)
cb4b535d KG	391	extern FLO_type divide (FLO_type, FLO_type);
	392	#endif
	393
	394	extern int __fpcmp_parts (fp_number_type , fp_number_type );
	395
ea976606	396	#if defined(L_compare_sf) \|\| defined(L_compare_df) \|\| defined(L_compare_tf)
cb4b535d KG	397	extern CMPtype compare (FLO_type, FLO_type);
	398	#endif
	399
ea976606	400	#if defined(L_eq_sf) \|\| defined(L_eq_df) \|\| defined(L_eq_tf)
cb4b535d KG	401	extern CMPtype _eq_f2 (FLO_type, FLO_type);
	402	#endif
	403
ea976606	404	#if defined(L_ne_sf) \|\| defined(L_ne_df) \|\| defined(L_ne_tf)
cb4b535d KG	405	extern CMPtype _ne_f2 (FLO_type, FLO_type);
	406	#endif
	407
ea976606	408	#if defined(L_gt_sf) \|\| defined(L_gt_df) \|\| defined(L_gt_tf)
cb4b535d KG	409	extern CMPtype _gt_f2 (FLO_type, FLO_type);
	410	#endif
	411
ea976606	412	#if defined(L_ge_sf) \|\| defined(L_ge_df) \|\| defined(L_ge_tf)
cb4b535d KG	413	extern CMPtype _ge_f2 (FLO_type, FLO_type);
	414	#endif
	415
ea976606	416	#if defined(L_lt_sf) \|\| defined(L_lt_df) \|\| defined(L_lt_tf)
cb4b535d KG	417	extern CMPtype _lt_f2 (FLO_type, FLO_type);
	418	#endif
	419
ea976606	420	#if defined(L_le_sf) \|\| defined(L_le_df) \|\| defined(L_le_tf)
cb4b535d KG	421	extern CMPtype _le_f2 (FLO_type, FLO_type);
	422	#endif
	423
ea976606	424	#if defined(L_unord_sf) \|\| defined(L_unord_df) \|\| defined(L_unord_tf)
cb4b535d KG	425	extern CMPtype _unord_f2 (FLO_type, FLO_type);
	426	#endif
	427
ea976606	428	#if defined(L_si_to_sf) \|\| defined(L_si_to_df) \|\| defined(L_si_to_tf)
cb4b535d KG	429	extern FLO_type si_to_float (SItype);
	430	#endif
	431
ea976606	432	#if defined(L_sf_to_si) \|\| defined(L_df_to_si) \|\| defined(L_tf_to_si)
cb4b535d KG	433	extern SItype float_to_si (FLO_type);
	434	#endif
	435
bd9c1f8f	436	#if defined(L_tf_to_usi)
cb4b535d KG	437	extern USItype float_to_usi (FLO_type);
cb4b535d KG	438	#endif
cb4b535d	439
ea976606	440	#if defined(L_usi_to_sf) \|\| defined(L_usi_to_df) \|\| defined(L_usi_to_tf)
fc608b03 KG	441	extern FLO_type usi_to_float (USItype);
	442	#endif
	443
ea976606	444	#if defined(L_negate_sf) \|\| defined(L_negate_df) \|\| defined(L_negate_tf)
cb4b535d KG	445	extern FLO_type negate (FLO_type);
	446	#endif
	447
	448	#ifdef FLOAT
	449	#if defined(L_make_sf)
	450	extern SFtype __make_fp (fp_class_type, unsigned int, int, USItype);
	451	#endif
	452	#ifndef FLOAT_ONLY
	453	extern DFtype __make_dp (fp_class_type, unsigned int, int, UDItype);
	454	#if defined(L_sf_to_df)
	455	extern DFtype sf_to_df (SFtype);
	456	#endif
ea976606 AO	457	#if defined(L_sf_to_tf) && defined(TMODES)
	458	extern TFtype sf_to_tf (SFtype);
	459	#endif
cb4b535d KG	460	#endif /* ! FLOAT_ONLY */
	461	#endif /* FLOAT */
	462
	463	#ifndef FLOAT
	464	extern SFtype __make_fp (fp_class_type, unsigned int, int, USItype);
	465	#if defined(L_make_df)
	466	extern DFtype __make_dp (fp_class_type, unsigned int, int, UDItype);
	467	#endif
	468	#if defined(L_df_to_sf)
	469	extern SFtype df_to_sf (DFtype);
	470	#endif
ea976606 AO	471	#if defined(L_df_to_tf) && defined(TMODES)
	472	extern TFtype df_to_tf (DFtype);
	473	#endif
cb4b535d KG	474	#endif /* ! FLOAT */
cb4b535d KG	475
ea976606	476	#ifdef TMODES
266a9ef1	477	extern DFtype __make_dp (fp_class_type, unsigned int, int, UDItype);
ea976606 AO	478	extern TFtype __make_tp (fp_class_type, unsigned int, int, UTItype);
	479	#ifdef TFLOAT
	480	#if defined(L_tf_to_sf)
	481	extern SFtype tf_to_sf (TFtype);
	482	#endif
	483	#if defined(L_tf_to_df)
	484	extern DFtype tf_to_df (TFtype);
	485	#endif
	486	#if defined(L_di_to_tf)
	487	extern TFtype di_to_df (DItype);
	488	#endif
	489	#endif /* TFLOAT */
	490	#endif /* TMODES */
	491
88657302	492	#endif /* ! GCC_FP_BIT_H */