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/* Header file for dfp-bit.c.
Copyright (C) 2005, 2006 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 2, or (at your option) any later
version.
In addition to the permissions in the GNU 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 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.)
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.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */
#ifndef _DFPBIT_H
#define _DFPBIT_H
#include "tconfig.h"
#include "coretypes.h"
#include "tm.h"
#ifndef LIBGCC2_WORDS_BIG_ENDIAN
#define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
#endif
#ifndef LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
#define LIBGCC2_FLOAT_WORDS_BIG_ENDIAN LIBGCC2_WORDS_BIG_ENDIAN
#endif
#ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE
#endif
#ifndef LIBGCC2_HAS_XF_MODE
#define LIBGCC2_HAS_XF_MODE \
(BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80)
#endif
/* 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) IEEE754R 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
/* Define CONTEXT_ROUND to obtain the current decNumber rounding mode. */
extern enum rounding __decGetRound (void);
#define CONTEXT_ROUND __decGetRound ()
extern int __dfp_traps;
#define CONTEXT_TRAPS __dfp_traps
#define CONTEXT_ERRORS(context) context.status & DEC_Errors
extern void __dfp_raise (int);
#define DFP_RAISE(A) __dfp_raise(A)
/* 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) IEEE754R 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
#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.
STR_TO_BFP: The function to read the value from a string. */
#if BFP_KIND == 1
/* strtof is declared in <stdlib.h> only for C99. */
extern float strtof (const char *, char **);
#define BFP_TYPE SFtype
#define BFP_FMT "%e"
#define STR_TO_BFP strtof
#elif BFP_KIND == 2
#define BFP_TYPE DFtype
#define BFP_FMT "%e"
#define STR_TO_BFP strtod
#elif BFP_KIND == 3
#if LIBGCC2_HAS_XF_MODE
/* These aren't used if XF mode is not supported. */
#define BFP_TYPE XFtype
#define BFP_FMT "%e"
#define BFP_VIA_TYPE double
#define STR_TO_BFP strtod
#endif
#endif /* BFP_KIND */
#if WIDTH == 128 || WIDTH_TO == 128
#include "decimal128.h"
#endif
#if WIDTH == 64 || WIDTH_TO == 64
#include "decimal64.h"
#endif
#if WIDTH == 32 || WIDTH_TO == 32
#include "decimal32.h"
#endif
#include "decNumber.h"
/* Names of arithmetic functions. */
#if WIDTH == 32
#define DFP_ADD __addsd3
#define DFP_SUB __subsd3
#define DFP_MULTIPLY __mulsd3
#define DFP_DIVIDE __divsd3
#define DFP_EQ __eqsd2
#define DFP_NE __nesd2
#define DFP_LT __ltsd2
#define DFP_GT __gtsd2
#define DFP_LE __lesd2
#define DFP_GE __gesd2
#define DFP_UNORD __unordsd2
#elif WIDTH == 64
#define DFP_ADD __adddd3
#define DFP_SUB __subdd3
#define DFP_MULTIPLY __muldd3
#define DFP_DIVIDE __divdd3
#define DFP_EQ __eqdd2
#define DFP_NE __nedd2
#define DFP_LT __ltdd2
#define DFP_GT __gtdd2
#define DFP_LE __ledd2
#define DFP_GE __gedd2
#define DFP_UNORD __unorddd2
#elif WIDTH == 128
#define DFP_ADD __addtd3
#define DFP_SUB __subtd3
#define DFP_MULTIPLY __multd3
#define DFP_DIVIDE __divtd3
#define DFP_EQ __eqtd2
#define DFP_NE __netd2
#define DFP_LT __lttd2
#define DFP_GT __gttd2
#define DFP_LE __letd2
#define DFP_GE __getd2
#define DFP_UNORD __unordtd2
#endif
/* Names of functions to convert between different decimal float types. */
#if WIDTH == 32
#if WIDTH_TO == 64
#define DFP_TO_DFP __extendsddd2
#elif WIDTH_TO == 128
#define DFP_TO_DFP __extendsdtd2
#endif
#elif WIDTH == 64
#if WIDTH_TO == 32
#define DFP_TO_DFP __truncddsd2
#elif WIDTH_TO == 128
#define DFP_TO_DFP __extendddtd2
#endif
#elif WIDTH == 128
#if WIDTH_TO == 32
#define DFP_TO_DFP __trunctdsd2
#elif WIDTH_TO == 64
#define DFP_TO_DFP __trunctddd2
#endif
#endif
/* Names of functions to convert between decimal float and integers. */
#if WIDTH == 32
#if INT_KIND == 1
#define INT_TO_DFP __floatsisd
#define DFP_TO_INT __fixsdsi
#elif INT_KIND == 2
#define INT_TO_DFP __floatdisd
#define DFP_TO_INT __fixsddi
#elif INT_KIND == 3
#define INT_TO_DFP __floatunssisd
#define DFP_TO_INT __fixunssdsi
#elif INT_KIND == 4
#define INT_TO_DFP __floatunsdisd
#define DFP_TO_INT __fixunssddi
#endif
#elif WIDTH == 64
#if INT_KIND == 1
#define INT_TO_DFP __floatsidd
#define DFP_TO_INT __fixddsi
#elif INT_KIND == 2
#define INT_TO_DFP __floatdidd
#define DFP_TO_INT __fixdddi
#elif INT_KIND == 3
#define INT_TO_DFP __floatunssidd
#define DFP_TO_INT __fixunsddsi
#elif INT_KIND == 4
#define INT_TO_DFP __floatunsdidd
#define DFP_TO_INT __fixunsdddi
#endif
#elif WIDTH == 128
#if INT_KIND == 1
#define INT_TO_DFP __floatsitd
#define DFP_TO_INT __fixtdsi
#elif INT_KIND == 2
#define INT_TO_DFP __floatditd
#define DFP_TO_INT __fixtddi
#elif INT_KIND == 3
#define INT_TO_DFP __floatunssitd
#define DFP_TO_INT __fixunstdsi
#elif INT_KIND == 4
#define INT_TO_DFP __floatunsditd
#define DFP_TO_INT __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 __extendsfsd
#define DFP_TO_BFP __truncsdsf
#elif BFP_KIND == 2
#define BFP_TO_DFP __truncdfsd
#define DFP_TO_BFP __extendsddf
#elif BFP_KIND == 3
#define BFP_TO_DFP __truncxfsd
#define DFP_TO_BFP __extendsdxf
#endif /* BFP_KIND */
#elif WIDTH == 64
#if BFP_KIND == 1
#define BFP_TO_DFP __extendsfdd
#define DFP_TO_BFP __truncddsf
#elif BFP_KIND == 2
#define BFP_TO_DFP __extenddfdd
#define DFP_TO_BFP __truncdddf
#elif BFP_KIND == 3
#define BFP_TO_DFP __truncxfdd
#define DFP_TO_BFP __extendddxf
#endif /* BFP_KIND */
#elif WIDTH == 128
#if BFP_KIND == 1
#define BFP_TO_DFP __extendsftd
#define DFP_TO_BFP __trunctdsf
#elif BFP_KIND == 2
#define BFP_TO_DFP __extenddftd
#define DFP_TO_BFP __trunctddf
#elif BFP_KIND == 3
#define BFP_TO_DFP __extendxftd
#define DFP_TO_BFP __trunctdxf
#endif /* BFP_KIND */
#endif /* WIDTH */
/* Some handy typedefs. */
typedef float SFtype __attribute__ ((mode (SF)));
typedef float DFtype __attribute__ ((mode (DF)));
#if LIBGCC2_HAS_XF_MODE
typedef float XFtype __attribute__ ((mode (XF)));
#endif /* LIBGCC2_HAS_XF_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 `word_mode' in GCC for the target. */
typedef int CMPtype __attribute__ ((mode (word)));
/* 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)) \
&& LIBGCC2_HAS_XF_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)) \
&& LIBGCC2_HAS_XF_MODE)
extern DFP_C_TYPE BFP_TO_DFP (BFP_TYPE);
#endif
#endif /* _DFPBIT_H */
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