497e80a371
of unnecessary path components that are relics of cvs2svn. (These are directory moves)
514 lines
15 KiB
C
514 lines
15 KiB
C
/* Header file for dfp-bit.c.
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Copyright (C) 2005, 2006 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file into combinations with other programs,
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and to distribute those combinations without any restriction coming
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from the use of this file. (The General Public License restrictions
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine
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executable.)
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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#ifndef _DFPBIT_H
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#define _DFPBIT_H
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#include "tconfig.h"
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#include "coretypes.h"
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#include "tm.h"
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#ifndef LIBGCC2_WORDS_BIG_ENDIAN
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#define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
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#endif
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#ifndef LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
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#define LIBGCC2_FLOAT_WORDS_BIG_ENDIAN LIBGCC2_WORDS_BIG_ENDIAN
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#endif
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#ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
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#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE
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#endif
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#ifndef LIBGCC2_HAS_XF_MODE
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#define LIBGCC2_HAS_XF_MODE \
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(BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80)
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#endif
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/* Depending on WIDTH, define a number of macros:
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DFP_C_TYPE: type of the arguments to the libgcc functions;
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(eg _Decimal32)
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IEEE_TYPE: the corresponding (encoded) IEEE754R type;
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(eg decimal32)
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TO_INTERNAL: the name of the decNumber function to convert an
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encoded value into the decNumber internal representation;
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TO_ENCODED: the name of the decNumber function to convert an
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internally represented decNumber into the encoded
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representation.
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FROM_STRING: the name of the decNumber function to read an
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encoded value from a string.
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TO_STRING: the name of the decNumber function to write an
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encoded value to a string. */
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#if WIDTH == 32
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#define DFP_C_TYPE _Decimal32
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#define IEEE_TYPE decimal32
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#define HOST_TO_IEEE __host_to_ieee_32
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#define IEEE_TO_HOST __ieee_to_host_32
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#define TO_INTERNAL __decimal32ToNumber
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#define TO_ENCODED __decimal32FromNumber
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#define FROM_STRING __decimal32FromString
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#define TO_STRING __decimal32ToString
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#elif WIDTH == 64
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#define DFP_C_TYPE _Decimal64
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#define IEEE_TYPE decimal64
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#define HOST_TO_IEEE __host_to_ieee_64
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#define IEEE_TO_HOST __ieee_to_host_64
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#define TO_INTERNAL __decimal64ToNumber
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#define TO_ENCODED __decimal64FromNumber
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#define FROM_STRING __decimal64FromString
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#define TO_STRING __decimal64ToString
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#elif WIDTH == 128
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#define DFP_C_TYPE _Decimal128
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#define IEEE_TYPE decimal128
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#define HOST_TO_IEEE __host_to_ieee_128
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#define IEEE_TO_HOST __ieee_to_host_128
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#define TO_INTERNAL __decimal128ToNumber
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#define TO_ENCODED __decimal128FromNumber
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#define FROM_STRING __decimal128FromString
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#define TO_STRING __decimal128ToString
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#else
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#error invalid decimal float word width
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#endif
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/* We define __DEC_EVAL_METHOD__ to 2, saying that we evaluate all
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operations and constants to the range and precision of the _Decimal128
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type. Make it so. */
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#if WIDTH == 32
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#define CONTEXT_INIT DEC_INIT_DECIMAL32
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#elif WIDTH == 64
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#define CONTEXT_INIT DEC_INIT_DECIMAL64
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#elif WIDTH == 128
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#define CONTEXT_INIT DEC_INIT_DECIMAL128
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#endif
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/* Define CONTEXT_ROUND to obtain the current decNumber rounding mode. */
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extern enum rounding __decGetRound (void);
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#define CONTEXT_ROUND __decGetRound ()
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extern int __dfp_traps;
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#define CONTEXT_TRAPS __dfp_traps
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#define CONTEXT_ERRORS(context) context.status & DEC_Errors
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extern void __dfp_raise (int);
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#define DFP_RAISE(A) __dfp_raise(A)
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/* Conversions between different decimal float types use WIDTH_TO to
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determine additional macros to define. */
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#if defined (L_dd_to_sd) || defined (L_td_to_sd)
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#define WIDTH_TO 32
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#elif defined (L_sd_to_dd) || defined (L_td_to_dd)
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#define WIDTH_TO 64
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#elif defined (L_sd_to_td) || defined (L_dd_to_td)
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#define WIDTH_TO 128
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#endif
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/* If WIDTH_TO is defined, define additional macros:
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DFP_C_TYPE_TO: type of the result of dfp to dfp conversion.
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IEEE_TYPE_TO: the corresponding (encoded) IEEE754R type.
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TO_ENCODED_TO: the name of the decNumber function to convert an
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internally represented decNumber into the encoded representation
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for the destination. */
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#if WIDTH_TO == 32
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#define DFP_C_TYPE_TO _Decimal32
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#define IEEE_TYPE_TO decimal32
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#define TO_ENCODED_TO __decimal32FromNumber
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#define IEEE_TO_HOST_TO __ieee_to_host_32
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#elif WIDTH_TO == 64
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#define DFP_C_TYPE_TO _Decimal64
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#define IEEE_TYPE_TO decimal64
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#define TO_ENCODED_TO __decimal64FromNumber
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#define IEEE_TO_HOST_TO __ieee_to_host_64
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#elif WIDTH_TO == 128
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#define DFP_C_TYPE_TO _Decimal128
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#define IEEE_TYPE_TO decimal128
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#define TO_ENCODED_TO __decimal128FromNumber
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#define IEEE_TO_HOST_TO __ieee_to_host_128
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#endif
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/* Conversions between decimal float types and integral types use INT_KIND
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to determine the data type and C functions to use. */
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#if defined (L_sd_to_si) || defined (L_dd_to_si) || defined (L_td_to_si) \
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|| defined (L_si_to_sd) || defined (L_si_to_dd) || defined (L_si_to_td)
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#define INT_KIND 1
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#elif defined (L_sd_to_di) || defined (L_dd_to_di) || defined (L_td_to_di) \
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|| defined (L_di_to_sd) || defined (L_di_to_dd) || defined (L_di_to_td)
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#define INT_KIND 2
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#elif defined (L_sd_to_usi) || defined (L_dd_to_usi) || defined (L_td_to_usi) \
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|| defined (L_usi_to_sd) || defined (L_usi_to_dd) || defined (L_usi_to_td)
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#define INT_KIND 3
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#elif defined (L_sd_to_udi) || defined (L_dd_to_udi) || defined (L_td_to_udi) \
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|| defined (L_udi_to_sd) || defined (L_udi_to_dd) || defined (L_udi_to_td)
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#define INT_KIND 4
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#endif
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/* If INT_KIND is defined, define additional macros:
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INT_TYPE: The integer data type.
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INT_FMT: The format string for writing the integer to a string.
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CAST_FOR_FMT: Cast variable of INT_KIND to C type for sprintf.
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This works for ILP32 and LP64, won't for other type size systems.
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STR_TO_INT: The function to read the integer from a string. */
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#if INT_KIND == 1
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#define INT_TYPE SItype
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#define INT_FMT "%d"
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#define CAST_FOR_FMT(A) (int)A
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#define STR_TO_INT strtol
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#elif INT_KIND == 2
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#define INT_TYPE DItype
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#define INT_FMT "%lld"
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#define CAST_FOR_FMT(A) (long long)A
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#define STR_TO_INT strtoll
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#elif INT_KIND == 3
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#define INT_TYPE USItype
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#define INT_FMT "%u"
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#define CAST_FOR_FMT(A) (unsigned int)A
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#define STR_TO_INT strtoul
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#elif INT_KIND == 4
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#define INT_TYPE UDItype
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#define INT_FMT "%llu"
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#define CAST_FOR_FMT(A) (unsigned long long)A
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#define STR_TO_INT strtoull
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#endif
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/* Conversions between decimal float types and binary float types use
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BFP_KIND to determine the data type and C functions to use. */
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#if defined (L_sd_to_sf) || defined (L_dd_to_sf) || defined (L_td_to_sf) \
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|| defined (L_sf_to_sd) || defined (L_sf_to_dd) || defined (L_sf_to_td)
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#define BFP_KIND 1
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#elif defined (L_sd_to_df) || defined (L_dd_to_df ) || defined (L_td_to_df) \
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|| defined (L_df_to_sd) || defined (L_df_to_dd) || defined (L_df_to_td)
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#define BFP_KIND 2
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#elif defined (L_sd_to_xf) || defined (L_dd_to_xf ) || defined (L_td_to_xf) \
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|| defined (L_xf_to_sd) || defined (L_xf_to_dd) || defined (L_xf_to_td)
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#define BFP_KIND 3
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#endif
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/* If BFP_KIND is defined, define additional macros:
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BFP_TYPE: The binary floating point data type.
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BFP_FMT: The format string for writing the value to a string.
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STR_TO_BFP: The function to read the value from a string. */
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#if BFP_KIND == 1
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/* strtof is declared in <stdlib.h> only for C99. */
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extern float strtof (const char *, char **);
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#define BFP_TYPE SFtype
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#define BFP_FMT "%e"
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#define STR_TO_BFP strtof
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#elif BFP_KIND == 2
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#define BFP_TYPE DFtype
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#define BFP_FMT "%e"
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#define STR_TO_BFP strtod
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#elif BFP_KIND == 3
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#if LIBGCC2_HAS_XF_MODE
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/* These aren't used if XF mode is not supported. */
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#define BFP_TYPE XFtype
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#define BFP_FMT "%e"
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#define BFP_VIA_TYPE double
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#define STR_TO_BFP strtod
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#endif
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#endif /* BFP_KIND */
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#if WIDTH == 128 || WIDTH_TO == 128
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#include "decimal128.h"
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#endif
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#if WIDTH == 64 || WIDTH_TO == 64
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#include "decimal64.h"
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#endif
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#if WIDTH == 32 || WIDTH_TO == 32
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#include "decimal32.h"
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#endif
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#include "decNumber.h"
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/* Names of arithmetic functions. */
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#if WIDTH == 32
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#define DFP_ADD __addsd3
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#define DFP_SUB __subsd3
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#define DFP_MULTIPLY __mulsd3
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#define DFP_DIVIDE __divsd3
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#define DFP_EQ __eqsd2
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#define DFP_NE __nesd2
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#define DFP_LT __ltsd2
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#define DFP_GT __gtsd2
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#define DFP_LE __lesd2
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#define DFP_GE __gesd2
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#define DFP_UNORD __unordsd2
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#elif WIDTH == 64
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#define DFP_ADD __adddd3
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#define DFP_SUB __subdd3
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#define DFP_MULTIPLY __muldd3
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#define DFP_DIVIDE __divdd3
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#define DFP_EQ __eqdd2
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#define DFP_NE __nedd2
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#define DFP_LT __ltdd2
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#define DFP_GT __gtdd2
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#define DFP_LE __ledd2
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#define DFP_GE __gedd2
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#define DFP_UNORD __unorddd2
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#elif WIDTH == 128
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#define DFP_ADD __addtd3
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#define DFP_SUB __subtd3
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#define DFP_MULTIPLY __multd3
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#define DFP_DIVIDE __divtd3
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#define DFP_EQ __eqtd2
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#define DFP_NE __netd2
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#define DFP_LT __lttd2
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#define DFP_GT __gttd2
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#define DFP_LE __letd2
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#define DFP_GE __getd2
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#define DFP_UNORD __unordtd2
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#endif
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/* Names of functions to convert between different decimal float types. */
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#if WIDTH == 32
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#if WIDTH_TO == 64
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#define DFP_TO_DFP __extendsddd2
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#elif WIDTH_TO == 128
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#define DFP_TO_DFP __extendsdtd2
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#endif
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#elif WIDTH == 64
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#if WIDTH_TO == 32
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#define DFP_TO_DFP __truncddsd2
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#elif WIDTH_TO == 128
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#define DFP_TO_DFP __extendddtd2
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#endif
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#elif WIDTH == 128
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#if WIDTH_TO == 32
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#define DFP_TO_DFP __trunctdsd2
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#elif WIDTH_TO == 64
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#define DFP_TO_DFP __trunctddd2
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#endif
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#endif
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/* Names of functions to convert between decimal float and integers. */
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#if WIDTH == 32
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#if INT_KIND == 1
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#define INT_TO_DFP __floatsisd
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#define DFP_TO_INT __fixsdsi
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#elif INT_KIND == 2
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#define INT_TO_DFP __floatdisd
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#define DFP_TO_INT __fixsddi
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#elif INT_KIND == 3
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#define INT_TO_DFP __floatunssisd
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#define DFP_TO_INT __fixunssdsi
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#elif INT_KIND == 4
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#define INT_TO_DFP __floatunsdisd
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#define DFP_TO_INT __fixunssddi
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#endif
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#elif WIDTH == 64
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#if INT_KIND == 1
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#define INT_TO_DFP __floatsidd
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#define DFP_TO_INT __fixddsi
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#elif INT_KIND == 2
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#define INT_TO_DFP __floatdidd
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#define DFP_TO_INT __fixdddi
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#elif INT_KIND == 3
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#define INT_TO_DFP __floatunssidd
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#define DFP_TO_INT __fixunsddsi
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#elif INT_KIND == 4
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#define INT_TO_DFP __floatunsdidd
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#define DFP_TO_INT __fixunsdddi
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#endif
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#elif WIDTH == 128
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#if INT_KIND == 1
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#define INT_TO_DFP __floatsitd
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#define DFP_TO_INT __fixtdsi
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#elif INT_KIND == 2
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#define INT_TO_DFP __floatditd
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#define DFP_TO_INT __fixtddi
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#elif INT_KIND == 3
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#define INT_TO_DFP __floatunssitd
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#define DFP_TO_INT __fixunstdsi
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#elif INT_KIND == 4
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#define INT_TO_DFP __floatunsditd
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#define DFP_TO_INT __fixunstddi
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#endif
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#endif
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/* Names of functions to convert between decimal float and binary float. */
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#if WIDTH == 32
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#if BFP_KIND == 1
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#define BFP_TO_DFP __extendsfsd
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#define DFP_TO_BFP __truncsdsf
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#elif BFP_KIND == 2
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#define BFP_TO_DFP __truncdfsd
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#define DFP_TO_BFP __extendsddf
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#elif BFP_KIND == 3
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#define BFP_TO_DFP __truncxfsd
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#define DFP_TO_BFP __extendsdxf
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#endif /* BFP_KIND */
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#elif WIDTH == 64
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#if BFP_KIND == 1
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#define BFP_TO_DFP __extendsfdd
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#define DFP_TO_BFP __truncddsf
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#elif BFP_KIND == 2
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#define BFP_TO_DFP __extenddfdd
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#define DFP_TO_BFP __truncdddf
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#elif BFP_KIND == 3
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#define BFP_TO_DFP __truncxfdd
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#define DFP_TO_BFP __extendddxf
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#endif /* BFP_KIND */
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#elif WIDTH == 128
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#if BFP_KIND == 1
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#define BFP_TO_DFP __extendsftd
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#define DFP_TO_BFP __trunctdsf
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#elif BFP_KIND == 2
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#define BFP_TO_DFP __extenddftd
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#define DFP_TO_BFP __trunctddf
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#elif BFP_KIND == 3
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#define BFP_TO_DFP __extendxftd
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#define DFP_TO_BFP __trunctdxf
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#endif /* BFP_KIND */
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#endif /* WIDTH */
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/* Some handy typedefs. */
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typedef float SFtype __attribute__ ((mode (SF)));
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typedef float DFtype __attribute__ ((mode (DF)));
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#if LIBGCC2_HAS_XF_MODE
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typedef float XFtype __attribute__ ((mode (XF)));
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#endif /* LIBGCC2_HAS_XF_MODE */
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typedef int SItype __attribute__ ((mode (SI)));
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typedef int DItype __attribute__ ((mode (DI)));
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typedef unsigned int USItype __attribute__ ((mode (SI)));
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typedef unsigned int UDItype __attribute__ ((mode (DI)));
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/* The type of the result of a decimal float comparison. This must
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match `word_mode' in GCC for the target. */
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typedef int CMPtype __attribute__ ((mode (word)));
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/* Prototypes. */
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#if defined (L_mul_sd) || defined (L_mul_dd) || defined (L_mul_td)
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extern DFP_C_TYPE DFP_MULTIPLY (DFP_C_TYPE, DFP_C_TYPE);
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#endif
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#if defined (L_div_sd) || defined (L_div_dd) || defined (L_div_td)
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extern DFP_C_TYPE DFP_DIVIDE (DFP_C_TYPE, DFP_C_TYPE);
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#endif
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#if defined (L_addsub_sd) || defined (L_addsub_dd) || defined (L_addsub_td)
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extern DFP_C_TYPE DFP_ADD (DFP_C_TYPE, DFP_C_TYPE);
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extern DFP_C_TYPE DFP_SUB (DFP_C_TYPE, DFP_C_TYPE);
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#endif
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#if defined (L_eq_sd) || defined (L_eq_dd) || defined (L_eq_td)
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extern CMPtype DFP_EQ (DFP_C_TYPE, DFP_C_TYPE);
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#endif
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#if defined (L_ne_sd) || defined (L_ne_dd) || defined (L_ne_td)
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extern CMPtype DFP_NE (DFP_C_TYPE, DFP_C_TYPE);
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#endif
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#if defined (L_lt_sd) || defined (L_lt_dd) || defined (L_lt_td)
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extern CMPtype DFP_LT (DFP_C_TYPE, DFP_C_TYPE);
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#endif
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#if defined (L_gt_sd) || defined (L_gt_dd) || defined (L_gt_td)
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extern CMPtype DFP_GT (DFP_C_TYPE, DFP_C_TYPE);
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#endif
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#if defined (L_le_sd) || defined (L_le_dd) || defined (L_le_td)
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extern CMPtype DFP_LE (DFP_C_TYPE, DFP_C_TYPE);
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#endif
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#if defined (L_ge_sd) || defined (L_ge_dd) || defined (L_ge_td)
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extern CMPtype DFP_GE (DFP_C_TYPE, DFP_C_TYPE);
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#endif
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#if defined (L_unord_sd) || defined (L_unord_dd) || defined (L_unord_td)
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extern CMPtype DFP_UNORD (DFP_C_TYPE, DFP_C_TYPE);
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#endif
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#if defined (L_sd_to_dd) || defined (L_sd_to_td) || defined (L_dd_to_sd) \
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|| defined (L_dd_to_td) || defined (L_td_to_sd) || defined (L_td_to_dd)
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extern DFP_C_TYPE_TO DFP_TO_DFP (DFP_C_TYPE);
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#endif
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#if defined (L_sd_to_si) || defined (L_dd_to_si) || defined (L_td_to_si) \
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|| defined (L_sd_to_di) || defined (L_dd_to_di) || defined (L_td_to_di) \
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|| defined (L_sd_to_usi) || defined (L_dd_to_usi) || defined (L_td_to_usi) \
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|| defined (L_sd_to_udi) || defined (L_dd_to_udi) || defined (L_td_to_udi)
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extern INT_TYPE DFP_TO_INT (DFP_C_TYPE);
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#endif
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#if defined (L_si_to_sd) || defined (L_si_to_dd) || defined (L_si_to_td) \
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|| defined (L_di_to_sd) || defined (L_di_to_dd) || defined (L_di_to_td) \
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|| defined (L_usi_to_sd) || defined (L_usi_to_dd) || defined (L_usi_to_td) \
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|| defined (L_udi_to_sd) || defined (L_udi_to_dd) || defined (L_udi_to_td)
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extern DFP_C_TYPE INT_TO_DFP (INT_TYPE);
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#endif
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#if defined (L_sd_to_sf) || defined (L_dd_to_sf) || defined (L_td_to_sf) \
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|| defined (L_sd_to_df) || defined (L_dd_to_df) || defined (L_td_to_df) \
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|| ((defined (L_sd_to_xf) || defined (L_dd_to_xf) || defined (L_td_to_xf)) \
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&& LIBGCC2_HAS_XF_MODE)
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extern BFP_TYPE DFP_TO_BFP (DFP_C_TYPE);
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#endif
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#if defined (L_sf_to_sd) || defined (L_sf_to_dd) || defined (L_sf_to_td) \
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|| defined (L_df_to_sd) || defined (L_df_to_dd) || defined (L_df_to_td) \
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|| ((defined (L_xf_to_sd) || defined (L_xf_to_dd) || defined (L_xf_to_td)) \
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&& LIBGCC2_HAS_XF_MODE)
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extern DFP_C_TYPE BFP_TO_DFP (BFP_TYPE);
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#endif
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#endif /* _DFPBIT_H */
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