gcc/libgcc/dfp-bit.h

/* Header file for dfp-bit.c.
   Copyright (C) 2005-2020 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 _DFPBIT_H
#define _DFPBIT_H

#include <float.h>
#include <fenv.h>
#include <decRound.h>
#include <decExcept.h>
#include "tconfig.h"
#include "coretypes.h"
#include "tm.h"
#include "libgcc_tm.h"

/* We need to know the size of long double that the C library supports.
   Don't use LIBGCC2_HAS_XF_MODE or LIBGCC2_HAS_TF_MODE here because
   some targets set both of those.  */

#ifndef __LIBGCC_XF_MANT_DIG__
#define __LIBGCC_XF_MANT_DIG__ 0
#endif
#define LONG_DOUBLE_HAS_XF_MODE \
  (__LDBL_MANT_DIG__ == __LIBGCC_XF_MANT_DIG__)

#ifndef __LIBGCC_TF_MANT_DIG__
#define __LIBGCC_TF_MANT_DIG__ 0
#endif
#define LONG_DOUBLE_HAS_TF_MODE \
  (__LDBL_MANT_DIG__ == __LIBGCC_TF_MANT_DIG__)

/* Depending on WIDTH, define a number of macros:

   DFP_C_TYPE: type of the arguments to the libgcc functions;
	(eg _Decimal32)

   IEEE_TYPE: the corresponding (encoded) IEEE754 type;
	(eg decimal32)
   
   TO_INTERNAL: the name of the decNumber function to convert an
   encoded value into the decNumber internal representation;

   TO_ENCODED: the name of the decNumber function to convert an
   internally represented decNumber into the encoded
   representation.

   FROM_STRING: the name of the decNumber function to read an
   encoded value from a string.

   TO_STRING: the name of the decNumber function to write an
   encoded value to a string.  */

#if WIDTH == 32
#define DFP_C_TYPE	_Decimal32
#define IEEE_TYPE	decimal32
#define HOST_TO_IEEE	__host_to_ieee_32
#define IEEE_TO_HOST	__ieee_to_host_32
#define TO_INTERNAL	__decimal32ToNumber
#define TO_ENCODED	__decimal32FromNumber
#define FROM_STRING	__decimal32FromString
#define TO_STRING	__decimal32ToString
#elif WIDTH == 64
#define DFP_C_TYPE	_Decimal64
#define IEEE_TYPE	decimal64
#define HOST_TO_IEEE	__host_to_ieee_64
#define IEEE_TO_HOST	__ieee_to_host_64
#define TO_INTERNAL	__decimal64ToNumber
#define TO_ENCODED	__decimal64FromNumber
#define FROM_STRING	__decimal64FromString
#define TO_STRING	__decimal64ToString
#elif WIDTH == 128
#define DFP_C_TYPE	_Decimal128
#define IEEE_TYPE	decimal128
#define HOST_TO_IEEE	__host_to_ieee_128
#define IEEE_TO_HOST	__ieee_to_host_128
#define TO_INTERNAL	__decimal128ToNumber
#define TO_ENCODED	__decimal128FromNumber
#define FROM_STRING	__decimal128FromString
#define TO_STRING	__decimal128ToString
#else
#error invalid decimal float word width
#endif

/* We define __DEC_EVAL_METHOD__ to 2, saying that we evaluate all
   operations and constants to the range and precision of the _Decimal128
   type.  Make it so.  */
#if WIDTH == 32
#define CONTEXT_INIT DEC_INIT_DECIMAL32
#elif WIDTH == 64
#define CONTEXT_INIT DEC_INIT_DECIMAL64
#elif WIDTH == 128
#define CONTEXT_INIT DEC_INIT_DECIMAL128
#endif

#ifndef DFP_INIT_ROUNDMODE
#define DFP_INIT_ROUNDMODE(A) A = DEC_ROUND_HALF_EVEN
#endif

#ifdef DFP_EXCEPTIONS_ENABLED
/* Return IEEE exception flags based on decNumber status flags.  */
#define DFP_IEEE_FLAGS(DEC_FLAGS) __extension__			\
({int _fe_flags = 0;						\
  if ((dec_flags & DEC_IEEE_854_Division_by_zero) != 0)		\
    _fe_flags |= FE_DIVBYZERO;					\
  if ((dec_flags & DEC_IEEE_854_Inexact) != 0)			\
    _fe_flags |= FE_INEXACT;					\
  if ((dec_flags & DEC_IEEE_854_Invalid_operation) != 0)	\
    _fe_flags |= FE_INVALID;					\
  if ((dec_flags & DEC_IEEE_854_Overflow) != 0)			\
    _fe_flags |= FE_OVERFLOW;					\
  if ((dec_flags & DEC_IEEE_854_Underflow) != 0)		\
    _fe_flags |= FE_UNDERFLOW;					\
  _fe_flags; })
#else
#define DFP_EXCEPTIONS_ENABLED 0
#define DFP_IEEE_FLAGS(A) 0
#define DFP_HANDLE_EXCEPTIONS(A) do {} while (0)
#endif

/* Conversions between different decimal float types use WIDTH_TO to
   determine additional macros to define.  */

#if defined (L_dd_to_sd) || defined (L_td_to_sd)
#define WIDTH_TO 32
#elif defined (L_sd_to_dd) || defined (L_td_to_dd)
#define WIDTH_TO 64
#elif defined (L_sd_to_td) || defined (L_dd_to_td)
#define WIDTH_TO 128
#endif

/* If WIDTH_TO is defined, define additional macros:

   DFP_C_TYPE_TO: type of the result of dfp to dfp conversion.

   IEEE_TYPE_TO: the corresponding (encoded) IEEE754 type.

   TO_ENCODED_TO: the name of the decNumber function to convert an
   internally represented decNumber into the encoded representation
   for the destination.  */

#if WIDTH_TO == 32
#define DFP_C_TYPE_TO	_Decimal32
#define IEEE_TYPE_TO	decimal32
#define TO_ENCODED_TO	__decimal32FromNumber
#define IEEE_TO_HOST_TO __ieee_to_host_32
#elif WIDTH_TO == 64
#define DFP_C_TYPE_TO	_Decimal64
#define IEEE_TYPE_TO	decimal64
#define TO_ENCODED_TO	__decimal64FromNumber
#define IEEE_TO_HOST_TO __ieee_to_host_64
#elif WIDTH_TO == 128
#define DFP_C_TYPE_TO	_Decimal128
#define IEEE_TYPE_TO	decimal128
#define TO_ENCODED_TO	__decimal128FromNumber
#define IEEE_TO_HOST_TO __ieee_to_host_128
#endif

/* Conversions between decimal float types and integral types use INT_KIND
   to determine the data type and C functions to use.  */

#if defined (L_sd_to_si) || defined (L_dd_to_si) || defined (L_td_to_si)  \
   || defined (L_si_to_sd) || defined (L_si_to_dd) || defined (L_si_to_td)
#define INT_KIND 1
#elif defined (L_sd_to_di) || defined (L_dd_to_di) || defined (L_td_to_di) \
   || defined (L_di_to_sd) || defined (L_di_to_dd) || defined (L_di_to_td)
#define INT_KIND 2
#elif defined (L_sd_to_usi) || defined (L_dd_to_usi) || defined (L_td_to_usi) \
   || defined (L_usi_to_sd) || defined (L_usi_to_dd) || defined (L_usi_to_td)
#define INT_KIND 3
#elif defined (L_sd_to_udi) || defined (L_dd_to_udi) || defined (L_td_to_udi) \
   || defined (L_udi_to_sd) || defined (L_udi_to_dd) || defined (L_udi_to_td)
#define INT_KIND 4
#endif

/*  If INT_KIND is defined, define additional macros:

    INT_TYPE: The integer data type.

    INT_FMT: The format string for writing the integer to a string.

    CAST_FOR_FMT: Cast variable of INT_KIND to C type for sprintf.
    This works for ILP32 and LP64, won't for other type size systems.

    STR_TO_INT: The function to read the integer from a string.  */

#if INT_KIND == 1
#define INT_TYPE SItype
#define INT_FMT "%d"
#define CAST_FOR_FMT(A) (int)A
#define STR_TO_INT strtol
#elif INT_KIND == 2
#define INT_TYPE DItype
#define INT_FMT "%lld"
#define CAST_FOR_FMT(A) (long long)A
#define STR_TO_INT strtoll
#elif INT_KIND == 3
#define INT_TYPE USItype
#define INT_FMT "%u"
#define CAST_FOR_FMT(A) (unsigned int)A
#define STR_TO_INT strtoul
#elif INT_KIND == 4
#define INT_TYPE UDItype
#define INT_FMT "%llu"
#define CAST_FOR_FMT(A) (unsigned long long)A
#define STR_TO_INT strtoull
#endif

/* Conversions between decimal float types and binary float types use
   BFP_KIND to determine the data type and C functions to use.  */

#if defined (L_sd_to_sf) || defined (L_dd_to_sf) || defined (L_td_to_sf) \
 || defined (L_sf_to_sd) || defined (L_sf_to_dd) || defined (L_sf_to_td)
#define BFP_KIND 1
#elif defined (L_sd_to_df) || defined (L_dd_to_df ) || defined (L_td_to_df) \
 ||   defined (L_df_to_sd) || defined (L_df_to_dd) || defined (L_df_to_td)
#define BFP_KIND 2
#elif defined (L_sd_to_xf) || defined (L_dd_to_xf ) || defined (L_td_to_xf) \
 ||   defined (L_xf_to_sd) || defined (L_xf_to_dd) || defined (L_xf_to_td)
#define BFP_KIND 3
#elif defined (L_sd_to_tf) || defined (L_dd_to_tf) || defined (L_td_to_tf) \
 ||   defined (L_tf_to_sd) || defined (L_tf_to_dd) || defined (L_tf_to_td)
#define BFP_KIND 4
#endif

/*  If BFP_KIND is defined, define additional macros:

    BFP_TYPE: The binary floating point data type.

    BFP_FMT: The format string for writing the value to a string.
    The number of decimal digits printed is
       ceil (nbits / log2 (10.) + 1)
    as described in David Matula's CACM 19(3) 716-723 June 1968 paper.

    BFP_VIA_TYPE: Type to which to cast a variable of BPF_TYPE for a
    call to sprintf.
    
    STR_TO_BFP: The function to read the value from a string.  */

#if BFP_KIND == 1
#define BFP_TYPE SFtype
#define BFP_FMT "%.9e"
#define BFP_VIA_TYPE double
#define STR_TO_BFP strtof

#elif BFP_KIND == 2
#define BFP_TYPE DFtype
#define BFP_FMT "%.17e"
#define BFP_VIA_TYPE double
#define STR_TO_BFP strtod

#elif BFP_KIND == 3
#if LONG_DOUBLE_HAS_XF_MODE
#define BFP_TYPE XFtype
#define BFP_FMT "%.21Le"
#define BFP_VIA_TYPE long double
#define STR_TO_BFP strtold
#endif /* LONG_DOUBLE_HAS_XF_MODE */

#elif BFP_KIND == 4
#if LONG_DOUBLE_HAS_TF_MODE
#define BFP_TYPE TFtype
#if LDBL_MANT_DIG == 106
#define BFP_FMT "%.33Le"
#elif LDBL_MANT_DIG == 113
#define BFP_FMT "%.36Le"
#else
#error "unknown long double size, cannot define BFP_FMT"
#endif /* LDBL_MANT_DIG */
#define STR_TO_BFP strtold
#define BFP_VIA_TYPE long double
#endif /* LONG_DOUBLE_HAS_TF_MODE */

#endif /* BFP_KIND */

#if WIDTH == 128 || WIDTH_TO == 128
#include "decimal128.h"
#include "decQuad.h"
#endif
#if WIDTH == 64 || WIDTH_TO == 64
#include "decimal64.h"
#include "decDouble.h"
#endif
#if WIDTH == 32 || WIDTH_TO == 32
#include "decimal32.h"
#include "decSingle.h"
#endif
#include "decNumber.h"

/* Names of arithmetic functions.  */

#if ENABLE_DECIMAL_BID_FORMAT
#define DPD_BID_NAME(DPD,BID) BID
#else
#define DPD_BID_NAME(DPD,BID) DPD
#endif

#if WIDTH == 32
#define DFP_ADD		DPD_BID_NAME(__dpd_addsd3,__bid_addsd3)
#define DFP_SUB		DPD_BID_NAME(__dpd_subsd3,__bid_subsd3)
#define DFP_MULTIPLY	DPD_BID_NAME(__dpd_mulsd3,__bid_mulsd3)
#define DFP_DIVIDE	DPD_BID_NAME(__dpd_divsd3,__bid_divsd3)
#define DFP_EQ		DPD_BID_NAME(__dpd_eqsd2,__bid_eqsd2)
#define DFP_NE		DPD_BID_NAME(__dpd_nesd2,__bid_nesd2)
#define DFP_LT		DPD_BID_NAME(__dpd_ltsd2,__bid_ltsd2)
#define DFP_GT		DPD_BID_NAME(__dpd_gtsd2,__bid_gtsd2)
#define DFP_LE		DPD_BID_NAME(__dpd_lesd2,__bid_lesd2)
#define DFP_GE		DPD_BID_NAME(__dpd_gesd2,__bid_gesd2)
#define DFP_UNORD	DPD_BID_NAME(__dpd_unordsd2,__bid_unordsd2)
#elif WIDTH == 64
#define DFP_ADD		DPD_BID_NAME(__dpd_adddd3,__bid_adddd3)
#define DFP_SUB		DPD_BID_NAME(__dpd_subdd3,__bid_subdd3)
#define DFP_MULTIPLY	DPD_BID_NAME(__dpd_muldd3,__bid_muldd3)
#define DFP_DIVIDE	DPD_BID_NAME(__dpd_divdd3,__bid_divdd3)
#define DFP_EQ		DPD_BID_NAME(__dpd_eqdd2,__bid_eqdd2)
#define DFP_NE		DPD_BID_NAME(__dpd_nedd2,__bid_nedd2)
#define DFP_LT		DPD_BID_NAME(__dpd_ltdd2,__bid_ltdd2)
#define DFP_GT		DPD_BID_NAME(__dpd_gtdd2,__bid_gtdd2)
#define DFP_LE		DPD_BID_NAME(__dpd_ledd2,__bid_ledd2)
#define DFP_GE		DPD_BID_NAME(__dpd_gedd2,__bid_gedd2)
#define DFP_UNORD	DPD_BID_NAME(__dpd_unorddd2,__bid_unorddd2)
#elif WIDTH == 128
#define DFP_ADD		DPD_BID_NAME(__dpd_addtd3,__bid_addtd3)
#define DFP_SUB		DPD_BID_NAME(__dpd_subtd3,__bid_subtd3)
#define DFP_MULTIPLY	DPD_BID_NAME(__dpd_multd3,__bid_multd3)
#define DFP_DIVIDE	DPD_BID_NAME(__dpd_divtd3,__bid_divtd3)
#define DFP_EQ		DPD_BID_NAME(__dpd_eqtd2,__bid_eqtd2)
#define DFP_NE		DPD_BID_NAME(__dpd_netd2,__bid_netd2)
#define DFP_LT		DPD_BID_NAME(__dpd_lttd2,__bid_lttd2)
#define DFP_GT		DPD_BID_NAME(__dpd_gttd2,__bid_gttd2)
#define DFP_LE		DPD_BID_NAME(__dpd_letd2,__bid_letd2)
#define DFP_GE		DPD_BID_NAME(__dpd_getd2,__bid_getd2)
#define DFP_UNORD	DPD_BID_NAME(__dpd_unordtd2,__bid_unordtd2)
#endif

/* Names of decNumber functions for DPD arithmetic.  */

#if WIDTH == 32
#define decFloat		decDouble
#define DFP_BINARY_OP		d32_binary_op
#define DFP_COMPARE_OP		d32_compare_op
#define DEC_FLOAT_ADD		decDoubleAdd
#define DEC_FLOAT_SUBTRACT	decDoubleSubtract
#define DEC_FLOAT_MULTIPLY	decDoubleMultiply
#define DEC_FLOAT_DIVIDE	decDoubleDivide
#define DEC_FLOAT_COMPARE	decDoubleCompare
#define DEC_FLOAT_IS_ZERO	decDoubleIsZero
#define DEC_FLOAT_IS_NAN	decDoubleIsNaN
#define DEC_FLOAT_IS_SIGNED	decDoubleIsSigned
#elif WIDTH == 64
#define DFP_BINARY_OP		dnn_binary_op
#define DFP_COMPARE_OP		dnn_compare_op
#define decFloat		decDouble
#define DEC_FLOAT_ADD		decDoubleAdd
#define DEC_FLOAT_SUBTRACT	decDoubleSubtract
#define DEC_FLOAT_MULTIPLY	decDoubleMultiply
#define DEC_FLOAT_DIVIDE	decDoubleDivide
#define DEC_FLOAT_COMPARE	decDoubleCompare
#define DEC_FLOAT_IS_ZERO	decDoubleIsZero
#define DEC_FLOAT_IS_NAN	decDoubleIsNaN
#define DEC_FLOAT_IS_SIGNED	decDoubleIsSigned
#elif WIDTH == 128
#define DFP_BINARY_OP		dnn_binary_op
#define DFP_COMPARE_OP		dnn_compare_op
#define decFloat		decQuad
#define DEC_FLOAT_ADD		decQuadAdd
#define DEC_FLOAT_SUBTRACT	decQuadSubtract
#define DEC_FLOAT_MULTIPLY	decQuadMultiply
#define DEC_FLOAT_DIVIDE	decQuadDivide
#define DEC_FLOAT_COMPARE	decQuadCompare
#define DEC_FLOAT_IS_ZERO	decQuadIsZero
#define DEC_FLOAT_IS_NAN	decQuadIsNaN
#define DEC_FLOAT_IS_SIGNED	decQuadIsSigned
#endif

/* Names of functions to convert between different decimal float types.  */

#if WIDTH == 32
#if WIDTH_TO == 64
#define DFP_TO_DFP	DPD_BID_NAME(__dpd_extendsddd2,__bid_extendsddd2)
#elif WIDTH_TO == 128
#define DFP_TO_DFP	DPD_BID_NAME(__dpd_extendsdtd2,__bid_extendsdtd2)
#endif
#elif WIDTH == 64	
#if WIDTH_TO == 32
#define DFP_TO_DFP	DPD_BID_NAME(__dpd_truncddsd2,__bid_truncddsd2)
#elif WIDTH_TO == 128
#define DFP_TO_DFP	DPD_BID_NAME(__dpd_extendddtd2,__bid_extendddtd2)
#endif
#elif WIDTH == 128
#if WIDTH_TO == 32
#define DFP_TO_DFP	DPD_BID_NAME(__dpd_trunctdsd2,__bid_trunctdsd2)
#elif WIDTH_TO == 64
#define DFP_TO_DFP	DPD_BID_NAME(__dpd_trunctddd2,__bid_trunctddd2)
#endif
#endif

/* Names of functions to convert between decimal float and integers.  */

#if WIDTH == 32
#if INT_KIND == 1
#define INT_TO_DFP	DPD_BID_NAME(__dpd_floatsisd,__bid_floatsisd)
#define DFP_TO_INT	DPD_BID_NAME(__dpd_fixsdsi,__bid_fixsdsi)
#define DEC_FLOAT_FROM_INT decDoubleFromInt32
#define DEC_FLOAT_TO_INT   decDoubleToInt32
#elif INT_KIND == 2
#define INT_TO_DFP	DPD_BID_NAME(__dpd_floatdisd,__bid_floatdisd)
#define DFP_TO_INT	DPD_BID_NAME(__dpd_fixsddi,__bid_fixsddi)
#elif INT_KIND == 3
#define INT_TO_DFP	DPD_BID_NAME(__dpd_floatunssisd,__bid_floatunssisd)
#define DFP_TO_INT	DPD_BID_NAME(__dpd_fixunssdsi,__bid_fixunssdsi)
#define DEC_FLOAT_FROM_INT decDoubleFromUInt32
#define DEC_FLOAT_TO_INT   decDoubleToUInt32
#elif INT_KIND == 4
#define INT_TO_DFP	DPD_BID_NAME(__dpd_floatunsdisd,__bid_floatunsdisd)
#define DFP_TO_INT	DPD_BID_NAME(__dpd_fixunssddi,__bid_fixunssddi)
#endif
#elif WIDTH == 64
#define decFloat	decDouble
#if INT_KIND == 1
#define INT_TO_DFP	DPD_BID_NAME(__dpd_floatsidd,__bid_floatsidd)
#define DFP_TO_INT	DPD_BID_NAME(__dpd_fixddsi,__bid_fixddsi)
#define DEC_FLOAT_FROM_INT decDoubleFromInt32
#define DEC_FLOAT_TO_INT   decDoubleToInt32
#elif INT_KIND == 2
#define INT_TO_DFP	DPD_BID_NAME(__dpd_floatdidd,__bid_floatdidd)
#define DFP_TO_INT	DPD_BID_NAME(__dpd_fixdddi,__bid_fixdddi)
#elif INT_KIND == 3
#define INT_TO_DFP	DPD_BID_NAME(__dpd_floatunssidd,__bid_floatunssidd)
#define DFP_TO_INT	DPD_BID_NAME(__dpd_fixunsddsi,__bid_fixunsddsi)
#define DEC_FLOAT_FROM_INT decDoubleFromUInt32
#define DEC_FLOAT_TO_INT   decDoubleToUInt32
#elif INT_KIND == 4
#define INT_TO_DFP	DPD_BID_NAME(__dpd_floatunsdidd,__bid_floatunsdidd)
#define DFP_TO_INT	DPD_BID_NAME(__dpd_fixunsdddi,__bid_fixunsdddi)
#endif
#elif WIDTH == 128
#define decFloat	decQuad
#if INT_KIND == 1
#define INT_TO_DFP	DPD_BID_NAME(__dpd_floatsitd,__bid_floatsitd)
#define DFP_TO_INT	DPD_BID_NAME(__dpd_fixtdsi,__bid_fixtdsi)
#define DEC_FLOAT_FROM_INT decQuadFromInt32
#define DEC_FLOAT_TO_INT   decQuadToInt32
#elif INT_KIND == 2
#define INT_TO_DFP	DPD_BID_NAME(__dpd_floatditd,__bid_floatditd)
#define DFP_TO_INT	DPD_BID_NAME(__dpd_fixtddi,__bid_fixtddi)
#elif INT_KIND == 3
#define INT_TO_DFP	DPD_BID_NAME(__dpd_floatunssitd,__bid_floatunssitd)
#define DFP_TO_INT	DPD_BID_NAME(__dpd_fixunstdsi,__bid_fixunstdsi)
#define DEC_FLOAT_FROM_INT decQuadFromUInt32
#define DEC_FLOAT_TO_INT   decQuadToUInt32
#elif INT_KIND == 4
#define INT_TO_DFP	DPD_BID_NAME(__dpd_floatunsditd,__bid_floatunsditd)
#define DFP_TO_INT	DPD_BID_NAME(__dpd_fixunstddi,__bid_fixunstddi)
#endif
#endif

/* Names of functions to convert between decimal float and binary float.  */

#if WIDTH == 32
#if BFP_KIND == 1
#define BFP_TO_DFP	DPD_BID_NAME(__dpd_extendsfsd,__bid_extendsfsd)
#define DFP_TO_BFP	DPD_BID_NAME(__dpd_truncsdsf,__bid_truncsdsf)
#elif BFP_KIND == 2
#define BFP_TO_DFP	DPD_BID_NAME(__dpd_truncdfsd,__bid_truncdfsd)
#define DFP_TO_BFP	DPD_BID_NAME(__dpd_extendsddf,__bid_extendsddf)
#elif BFP_KIND == 3
#define BFP_TO_DFP	DPD_BID_NAME(__dpd_truncxfsd,__bid_truncxfsd)
#define DFP_TO_BFP	DPD_BID_NAME(__dpd_extendsdxf,__bid_extendsdxf)
#elif BFP_KIND == 4
#define BFP_TO_DFP	DPD_BID_NAME(__dpd_trunctfsd,__bid_trunctfsd)
#define DFP_TO_BFP	DPD_BID_NAME(__dpd_extendsdtf,__bid_extendsdtf)
#endif /* BFP_KIND */

#elif WIDTH == 64
#if BFP_KIND == 1
#define BFP_TO_DFP	DPD_BID_NAME(__dpd_extendsfdd,__bid_extendsfdd)
#define DFP_TO_BFP	DPD_BID_NAME(__dpd_truncddsf,__bid_truncddsf)
#elif BFP_KIND == 2
#define BFP_TO_DFP	DPD_BID_NAME(__dpd_extenddfdd,__bid_extenddfdd)
#define DFP_TO_BFP	DPD_BID_NAME(__dpd_truncdddf,__bid_truncdddf)
#elif BFP_KIND == 3
#define BFP_TO_DFP	DPD_BID_NAME(__dpd_truncxfdd,__bid_truncxfdd)
#define DFP_TO_BFP	DPD_BID_NAME(__dpd_extendddxf,__bid_extendddxf)
#elif BFP_KIND == 4
#define BFP_TO_DFP	DPD_BID_NAME(__dpd_trunctfdd,__bid_trunctfdd)
#define DFP_TO_BFP	DPD_BID_NAME(__dpd_extendddtf,__bid_extendddtf)
#endif /* BFP_KIND */

#elif WIDTH == 128
#if BFP_KIND == 1
#define BFP_TO_DFP	DPD_BID_NAME(__dpd_extendsftd,__bid_extendsftd)
#define DFP_TO_BFP	DPD_BID_NAME(__dpd_trunctdsf,__bid_trunctdsf)
#elif BFP_KIND == 2
#define BFP_TO_DFP	DPD_BID_NAME(__dpd_extenddftd,__bid_extenddftd)
#define DFP_TO_BFP	DPD_BID_NAME(__dpd_trunctddf,__bid_trunctddf)
#elif BFP_KIND == 3
#define BFP_TO_DFP	DPD_BID_NAME(__dpd_extendxftd,__bid_extendxftd)
#define DFP_TO_BFP	DPD_BID_NAME(__dpd_trunctdxf,__bid_trunctdxf)
#elif BFP_KIND == 4
#define BFP_TO_DFP	DPD_BID_NAME(__dpd_extendtftd,__bid_extendtftd)
#define DFP_TO_BFP	DPD_BID_NAME(__dpd_trunctdtf,__bid_trunctdtf)
#endif /* BFP_KIND */

#endif /* WIDTH */

/* Some handy typedefs.  */

typedef float SFtype __attribute__ ((mode (SF)));
typedef float DFtype __attribute__ ((mode (DF)));
#if LONG_DOUBLE_HAS_XF_MODE
typedef float XFtype __attribute__ ((mode (XF)));
#endif /* LONG_DOUBLE_HAS_XF_MODE */
#if LONG_DOUBLE_HAS_TF_MODE
typedef float TFtype __attribute__ ((mode (TF)));
#endif /* LONG_DOUBLE_HAS_TF_MODE */

typedef int SItype __attribute__ ((mode (SI)));
typedef int DItype __attribute__ ((mode (DI)));
typedef unsigned int USItype __attribute__ ((mode (SI)));
typedef unsigned int UDItype __attribute__ ((mode (DI)));

/* The type of the result of a decimal float comparison.  This must
   match `__libgcc_cmp_return__' in GCC for the target.  */

typedef int CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));

/* Prototypes.  */

#if defined (L_mul_sd) || defined (L_mul_dd) || defined (L_mul_td)
extern DFP_C_TYPE DFP_MULTIPLY (DFP_C_TYPE, DFP_C_TYPE);
#endif

#if defined (L_div_sd) || defined (L_div_dd) || defined (L_div_td)
extern DFP_C_TYPE DFP_DIVIDE (DFP_C_TYPE, DFP_C_TYPE);
#endif

#if defined (L_addsub_sd) || defined (L_addsub_dd) || defined (L_addsub_td)
extern DFP_C_TYPE DFP_ADD (DFP_C_TYPE, DFP_C_TYPE);
extern DFP_C_TYPE DFP_SUB (DFP_C_TYPE, DFP_C_TYPE);
#endif

#if defined (L_eq_sd) || defined (L_eq_dd) || defined (L_eq_td)
extern CMPtype DFP_EQ (DFP_C_TYPE, DFP_C_TYPE);
#endif

#if defined (L_ne_sd) || defined (L_ne_dd) || defined (L_ne_td)
extern CMPtype DFP_NE (DFP_C_TYPE, DFP_C_TYPE);
#endif

#if defined (L_lt_sd) || defined (L_lt_dd) || defined (L_lt_td)
extern CMPtype DFP_LT (DFP_C_TYPE, DFP_C_TYPE);
#endif

#if defined (L_gt_sd) || defined (L_gt_dd) || defined (L_gt_td)
extern CMPtype DFP_GT (DFP_C_TYPE, DFP_C_TYPE);
#endif

#if defined (L_le_sd) || defined (L_le_dd) || defined (L_le_td)
extern CMPtype DFP_LE (DFP_C_TYPE, DFP_C_TYPE);
#endif

#if defined (L_ge_sd) || defined (L_ge_dd) || defined (L_ge_td)
extern CMPtype DFP_GE (DFP_C_TYPE, DFP_C_TYPE);
#endif

#if defined (L_unord_sd) || defined (L_unord_dd) || defined (L_unord_td)
extern CMPtype DFP_UNORD (DFP_C_TYPE, DFP_C_TYPE);
#endif

#if defined (L_sd_to_dd) || defined (L_sd_to_td) || defined (L_dd_to_sd) \
 || defined (L_dd_to_td) || defined (L_td_to_sd) || defined (L_td_to_dd)
extern DFP_C_TYPE_TO DFP_TO_DFP (DFP_C_TYPE);
#endif

#if defined (L_sd_to_si) || defined (L_dd_to_si) || defined (L_td_to_si) \
 || defined (L_sd_to_di) || defined (L_dd_to_di) || defined (L_td_to_di) \
 || defined (L_sd_to_usi) || defined (L_dd_to_usi) || defined (L_td_to_usi) \
 || defined (L_sd_to_udi) || defined (L_dd_to_udi) || defined (L_td_to_udi)
extern INT_TYPE DFP_TO_INT (DFP_C_TYPE);
#endif

#if defined (L_si_to_sd) || defined (L_si_to_dd) || defined (L_si_to_td) \
 || defined (L_di_to_sd) || defined (L_di_to_dd) || defined (L_di_to_td) \
 || defined (L_usi_to_sd) || defined (L_usi_to_dd) || defined (L_usi_to_td) \
 || defined (L_udi_to_sd) || defined (L_udi_to_dd) || defined (L_udi_to_td)
extern DFP_C_TYPE INT_TO_DFP (INT_TYPE);
#endif

#if defined (L_sd_to_sf) || defined (L_dd_to_sf) || defined (L_td_to_sf) \
 || defined (L_sd_to_df) || defined (L_dd_to_df) || defined (L_td_to_df) \
 || ((defined (L_sd_to_xf) || defined (L_dd_to_xf) || defined (L_td_to_xf)) \
     && LONG_DOUBLE_HAS_XF_MODE) \
 || ((defined (L_sd_to_tf) || defined (L_dd_to_tf) || defined (L_td_to_tf)) \
     && LONG_DOUBLE_HAS_TF_MODE)
extern BFP_TYPE DFP_TO_BFP (DFP_C_TYPE);
#endif

#if defined (L_sf_to_sd) || defined (L_sf_to_dd) || defined (L_sf_to_td) \
 || defined (L_df_to_sd) || defined (L_df_to_dd) || defined (L_df_to_td) \
 || ((defined (L_xf_to_sd) || defined (L_xf_to_dd) || defined (L_xf_to_td)) \
     && LONG_DOUBLE_HAS_XF_MODE) \
 || ((defined (L_tf_to_sd) || defined (L_tf_to_dd) || defined (L_tf_to_td)) \
     && LONG_DOUBLE_HAS_TF_MODE)
extern DFP_C_TYPE BFP_TO_DFP (BFP_TYPE);
#endif

#endif /* _DFPBIT_H */