gcc/config/dfp-bit.h

   1 /* Header file for dfp-bit.c.
   2    Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 2, or (at your option) any later
   9 version.
  10
  11 In addition to the permissions in the GNU General Public License, the
  12 Free Software Foundation gives you unlimited permission to link the
  13 compiled version of this file into combinations with other programs,
  14 and to distribute those combinations without any restriction coming
  15 from the use of this file.  (The General Public License restrictions
  16 do apply in other respects; for example, they cover modification of
  17 the file, and distribution when not linked into a combine
  18 executable.)
  19
  20 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  21 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  22 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  23 for more details.
  24
  25 You should have received a copy of the GNU General Public License
  26 along with GCC; see the file COPYING.  If not, write to the Free
  27 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
  28 02110-1301, USA.  */
  29
  30 #ifndef _DFPBIT_H
  31 #define _DFPBIT_H
  32
  33 #include <fenv.h>
  34 #include <decRound.h>
  35 #include <decExcept.h>
  36 #include "tconfig.h"
  37 #include "coretypes.h"
  38 #include "tm.h"
  39
  40 #ifndef LIBGCC2_WORDS_BIG_ENDIAN
  41 #define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
  42 #endif
  43
  44 #ifndef LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
  45 #define LIBGCC2_FLOAT_WORDS_BIG_ENDIAN LIBGCC2_WORDS_BIG_ENDIAN
  46 #endif
  47
  48 #ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
  49 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE
  50 #endif
  51
  52 #ifndef LIBGCC2_HAS_XF_MODE
  53 #define LIBGCC2_HAS_XF_MODE \
  54   (BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80)
  55 #endif
  56
  57 /* Depending on WIDTH, define a number of macros:
  58
  59    DFP_C_TYPE: type of the arguments to the libgcc functions;
  60         (eg _Decimal32)
  61
  62    IEEE_TYPE: the corresponding (encoded) IEEE754R type;
  63         (eg decimal32)
  64
  65    TO_INTERNAL: the name of the decNumber function to convert an
  66    encoded value into the decNumber internal representation;
  67
  68    TO_ENCODED: the name of the decNumber function to convert an
  69    internally represented decNumber into the encoded
  70    representation.
  71
  72    FROM_STRING: the name of the decNumber function to read an
  73    encoded value from a string.
  74
  75    TO_STRING: the name of the decNumber function to write an
  76    encoded value to a string.  */
  77
  78 #if WIDTH == 32
  79 #define DFP_C_TYPE      _Decimal32
  80 #define IEEE_TYPE       decimal32
  81 #define HOST_TO_IEEE    __host_to_ieee_32
  82 #define IEEE_TO_HOST    __ieee_to_host_32
  83 #define TO_INTERNAL     __decimal32ToNumber
  84 #define TO_ENCODED      __decimal32FromNumber
  85 #define FROM_STRING     __decimal32FromString
  86 #define TO_STRING       __decimal32ToString
  87 #elif WIDTH == 64
  88 #define DFP_C_TYPE      _Decimal64
  89 #define IEEE_TYPE       decimal64
  90 #define HOST_TO_IEEE    __host_to_ieee_64
  91 #define IEEE_TO_HOST    __ieee_to_host_64
  92 #define TO_INTERNAL     __decimal64ToNumber
  93 #define TO_ENCODED      __decimal64FromNumber
  94 #define FROM_STRING     __decimal64FromString
  95 #define TO_STRING       __decimal64ToString
  96 #elif WIDTH == 128
  97 #define DFP_C_TYPE      _Decimal128
  98 #define IEEE_TYPE       decimal128
  99 #define HOST_TO_IEEE    __host_to_ieee_128
 100 #define IEEE_TO_HOST    __ieee_to_host_128
 101 #define TO_INTERNAL     __decimal128ToNumber
 102 #define TO_ENCODED      __decimal128FromNumber
 103 #define FROM_STRING     __decimal128FromString
 104 #define TO_STRING       __decimal128ToString
 105 #else
 106 #error invalid decimal float word width
 107 #endif
 108
 109 /* We define __DEC_EVAL_METHOD__ to 2, saying that we evaluate all
 110    operations and constants to the range and precision of the _Decimal128
 111    type.  Make it so.  */
 112 #if WIDTH == 32
 113 #define CONTEXT_INIT DEC_INIT_DECIMAL32
 114 #elif WIDTH == 64
 115 #define CONTEXT_INIT DEC_INIT_DECIMAL64
 116 #elif WIDTH == 128
 117 #define CONTEXT_INIT DEC_INIT_DECIMAL128
 118 #endif
 119
 120 #ifndef DFP_INIT_ROUNDMODE
 121 #define DFP_INIT_ROUNDMODE(A) A = DEC_ROUND_HALF_EVEN
 122 #endif
 123
 124 #ifdef DFP_EXCEPTIONS_ENABLED
 125 /* Return IEEE exception flags based on decNumber status flags.  */
 126 #define DFP_IEEE_FLAGS(DEC_FLAGS) __extension__                 \
 127 ({int _fe_flags = 0;                                            \
 128   if ((dec_flags & DEC_IEEE_854_Division_by_zero) != 0)         \
 129     _fe_flags |= FE_DIVBYZERO;                                  \
 130   if ((dec_flags & DEC_IEEE_854_Inexact) != 0)                  \
 131     _fe_flags |= FE_INEXACT;                                    \
 132   if ((dec_flags & DEC_IEEE_854_Invalid_operation) != 0)        \
 133     _fe_flags |= FE_INVALID;                                    \
 134   if ((dec_flags & DEC_IEEE_854_Overflow) != 0)                 \
 135     _fe_flags |= FE_OVERFLOW;                                   \
 136   if ((dec_flags & DEC_IEEE_854_Underflow) != 0)                \
 137     _fe_flags |= FE_UNDERFLOW;                                  \
 138   _fe_flags; })
 139 #else
 140 #define DFP_EXCEPTIONS_ENABLED 0
 141 #define DFP_IEEE_FLAGS(A) 0
 142 #define DFP_HANDLE_EXCEPTIONS(A) do {} while (0)
 143 #endif
 144
 145 /* Conversions between different decimal float types use WIDTH_TO to
 146    determine additional macros to define.  */
 147
 148 #if defined (L_dd_to_sd) || defined (L_td_to_sd)
 149 #define WIDTH_TO 32
 150 #elif defined (L_sd_to_dd) || defined (L_td_to_dd)
 151 #define WIDTH_TO 64
 152 #elif defined (L_sd_to_td) || defined (L_dd_to_td)
 153 #define WIDTH_TO 128
 154 #endif
 155
 156 /* If WIDTH_TO is defined, define additional macros:
 157
 158    DFP_C_TYPE_TO: type of the result of dfp to dfp conversion.
 159
 160    IEEE_TYPE_TO: the corresponding (encoded) IEEE754R type.
 161
 162    TO_ENCODED_TO: the name of the decNumber function to convert an
 163    internally represented decNumber into the encoded representation
 164    for the destination.  */
 165
 166 #if WIDTH_TO == 32
 167 #define DFP_C_TYPE_TO   _Decimal32
 168 #define IEEE_TYPE_TO    decimal32
 169 #define TO_ENCODED_TO   __decimal32FromNumber
 170 #define IEEE_TO_HOST_TO __ieee_to_host_32
 171 #elif WIDTH_TO == 64
 172 #define DFP_C_TYPE_TO   _Decimal64
 173 #define IEEE_TYPE_TO    decimal64
 174 #define TO_ENCODED_TO   __decimal64FromNumber
 175 #define IEEE_TO_HOST_TO __ieee_to_host_64
 176 #elif WIDTH_TO == 128
 177 #define DFP_C_TYPE_TO   _Decimal128
 178 #define IEEE_TYPE_TO    decimal128
 179 #define TO_ENCODED_TO   __decimal128FromNumber
 180 #define IEEE_TO_HOST_TO __ieee_to_host_128
 181 #endif
 182
 183 /* Conversions between decimal float types and integral types use INT_KIND
 184    to determine the data type and C functions to use.  */
 185
 186 #if defined (L_sd_to_si) || defined (L_dd_to_si) || defined (L_td_to_si)  \
 187    || defined (L_si_to_sd) || defined (L_si_to_dd) || defined (L_si_to_td)
 188 #define INT_KIND 1
 189 #elif defined (L_sd_to_di) || defined (L_dd_to_di) || defined (L_td_to_di) \
 190    || defined (L_di_to_sd) || defined (L_di_to_dd) || defined (L_di_to_td)
 191 #define INT_KIND 2
 192 #elif defined (L_sd_to_usi) || defined (L_dd_to_usi) || defined (L_td_to_usi) \
 193    || defined (L_usi_to_sd) || defined (L_usi_to_dd) || defined (L_usi_to_td)
 194 #define INT_KIND 3
 195 #elif defined (L_sd_to_udi) || defined (L_dd_to_udi) || defined (L_td_to_udi) \
 196    || defined (L_udi_to_sd) || defined (L_udi_to_dd) || defined (L_udi_to_td)
 197 #define INT_KIND 4
 198 #endif
 199
 200 /*  If INT_KIND is defined, define additional macros:
 201
 202     INT_TYPE: The integer data type.
 203
 204     INT_FMT: The format string for writing the integer to a string.
 205
 206     CAST_FOR_FMT: Cast variable of INT_KIND to C type for sprintf.
 207     This works for ILP32 and LP64, won't for other type size systems.
 208
 209     STR_TO_INT: The function to read the integer from a string.  */
 210
 211 #if INT_KIND == 1
 212 #define INT_TYPE SItype
 213 #define INT_FMT "%d"
 214 #define CAST_FOR_FMT(A) (int)A
 215 #define STR_TO_INT strtol
 216 #elif INT_KIND == 2
 217 #define INT_TYPE DItype
 218 #define INT_FMT "%lld"
 219 #define CAST_FOR_FMT(A) (long long)A
 220 #define STR_TO_INT strtoll
 221 #elif INT_KIND == 3
 222 #define INT_TYPE USItype
 223 #define INT_FMT "%u"
 224 #define CAST_FOR_FMT(A) (unsigned int)A
 225 #define STR_TO_INT strtoul
 226 #elif INT_KIND == 4
 227 #define INT_TYPE UDItype
 228 #define INT_FMT "%llu"
 229 #define CAST_FOR_FMT(A) (unsigned long long)A
 230 #define STR_TO_INT strtoull
 231 #endif
 232
 233 /* Conversions between decimal float types and binary float types use
 234    BFP_KIND to determine the data type and C functions to use.  */
 235
 236 #if defined (L_sd_to_sf) || defined (L_dd_to_sf) || defined (L_td_to_sf) \
 237  || defined (L_sf_to_sd) || defined (L_sf_to_dd) || defined (L_sf_to_td)
 238 #define BFP_KIND 1
 239 #elif defined (L_sd_to_df) || defined (L_dd_to_df ) || defined (L_td_to_df) \
 240  ||   defined (L_df_to_sd) || defined (L_df_to_dd) || defined (L_df_to_td)
 241 #define BFP_KIND 2
 242 #elif defined (L_sd_to_xf) || defined (L_dd_to_xf ) || defined (L_td_to_xf) \
 243  ||   defined (L_xf_to_sd) || defined (L_xf_to_dd) || defined (L_xf_to_td)
 244 #define BFP_KIND 3
 245 #endif
 246
 247 /*  If BFP_KIND is defined, define additional macros:
 248
 249     BFP_TYPE: The binary floating point data type.
 250
 251     BFP_FMT: The format string for writing the value to a string.
 252
 253     STR_TO_BFP: The function to read the value from a string.  */
 254
 255 #if BFP_KIND == 1
 256 /* strtof is declared in <stdlib.h> only for C99.  */
 257 extern float strtof (const char *, char **);
 258 #define BFP_TYPE SFtype
 259 #define BFP_FMT "%e"
 260 #define STR_TO_BFP strtof
 261
 262 #elif BFP_KIND == 2
 263 #define BFP_TYPE DFtype
 264 #define BFP_FMT "%e"
 265 #define STR_TO_BFP strtod
 266
 267 #elif BFP_KIND == 3
 268 #if LIBGCC2_HAS_XF_MODE
 269 /* These aren't used if XF mode is not supported.  */
 270 #define BFP_TYPE XFtype
 271 #define BFP_FMT "%e"
 272 #define BFP_VIA_TYPE double
 273 #define STR_TO_BFP strtod
 274 #endif
 275
 276 #endif /* BFP_KIND */
 277
 278 #if WIDTH == 128 || WIDTH_TO == 128
 279 #include "decimal128.h"
 280 #endif
 281 #if WIDTH == 64 || WIDTH_TO == 64
 282 #include "decimal64.h"
 283 #endif
 284 #if WIDTH == 32 || WIDTH_TO == 32
 285 #include "decimal32.h"
 286 #endif
 287 #include "decNumber.h"
 288
 289 /* Names of arithmetic functions.  */
 290
 291 #if ENABLE_DECIMAL_BID_FORMAT
 292 #define DPD_BID_NAME(DPD,BID) BID
 293 #else
 294 #define DPD_BID_NAME(DPD,BID) DPD
 295 #endif
 296
 297 #if WIDTH == 32
 298 #define DFP_ADD         DPD_BID_NAME(__dpd_addsd3,__bid_addsd3)
 299 #define DFP_SUB         DPD_BID_NAME(__dpd_subsd3,__bid_subsd3)
 300 #define DFP_MULTIPLY    DPD_BID_NAME(__dpd_mulsd3,__bid_mulsd3)
 301 #define DFP_DIVIDE      DPD_BID_NAME(__dpd_divsd3,__bid_divsd3)
 302 #define DFP_EQ          DPD_BID_NAME(__dpd_eqsd2,__bid_eqsd2)
 303 #define DFP_NE          DPD_BID_NAME(__dpd_nesd2,__bid_nesd2)
 304 #define DFP_LT          DPD_BID_NAME(__dpd_ltsd2,__bid_ltsd2)
 305 #define DFP_GT          DPD_BID_NAME(__dpd_gtsd2,__bid_gtsd2)
 306 #define DFP_LE          DPD_BID_NAME(__dpd_lesd2,__bid_lesd2)
 307 #define DFP_GE          DPD_BID_NAME(__dpd_gesd2,__bid_gesd2)
 308 #define DFP_UNORD       DPD_BID_NAME(__dpd_unordsd2,__bid_unordsd2)
 309 #elif WIDTH == 64
 310 #define DFP_ADD         DPD_BID_NAME(__dpd_adddd3,__bid_adddd3)
 311 #define DFP_SUB         DPD_BID_NAME(__dpd_subdd3,__bid_subdd3)
 312 #define DFP_MULTIPLY    DPD_BID_NAME(__dpd_muldd3,__bid_muldd3)
 313 #define DFP_DIVIDE      DPD_BID_NAME(__dpd_divdd3,__bid_divdd3)
 314 #define DFP_EQ          DPD_BID_NAME(__dpd_eqdd2,__bid_eqdd2)
 315 #define DFP_NE          DPD_BID_NAME(__dpd_nedd2,__bid_nedd2)
 316 #define DFP_LT          DPD_BID_NAME(__dpd_ltdd2,__bid_ltdd2)
 317 #define DFP_GT          DPD_BID_NAME(__dpd_gtdd2,__bid_gtdd2)
 318 #define DFP_LE          DPD_BID_NAME(__dpd_ledd2,__bid_ledd2)
 319 #define DFP_GE          DPD_BID_NAME(__dpd_gedd2,__bid_gedd2)
 320 #define DFP_UNORD       DPD_BID_NAME(__dpd_unorddd2,__bid_unorddd2)
 321 #elif WIDTH == 128
 322 #define DFP_ADD         DPD_BID_NAME(__dpd_addtd3,__bid_addtd3)
 323 #define DFP_SUB         DPD_BID_NAME(__dpd_subtd3,__bid_subtd3)
 324 #define DFP_MULTIPLY    DPD_BID_NAME(__dpd_multd3,__bid_multd3)
 325 #define DFP_DIVIDE      DPD_BID_NAME(__dpd_divtd3,__bid_divtd3)
 326 #define DFP_EQ          DPD_BID_NAME(__dpd_eqtd2,__bid_eqtd2)
 327 #define DFP_NE          DPD_BID_NAME(__dpd_netd2,__bid_netd2)
 328 #define DFP_LT          DPD_BID_NAME(__dpd_lttd2,__bid_lttd2)
 329 #define DFP_GT          DPD_BID_NAME(__dpd_gttd2,__bid_gttd2)
 330 #define DFP_LE          DPD_BID_NAME(__dpd_letd2,__bid_letd2)
 331 #define DFP_GE          DPD_BID_NAME(__dpd_getd2,__bid_getd2)
 332 #define DFP_UNORD       DPD_BID_NAME(__dpd_unordtd2,__bid_unordtd2)
 333 #endif
 334
 335 /* Names of functions to convert between different decimal float types.  */
 336
 337 #if WIDTH == 32
 338 #if WIDTH_TO == 64
 339 #define DFP_TO_DFP      DPD_BID_NAME(__dpd_extendsddd2,__bid_extendsddd2)
 340 #elif WIDTH_TO == 128
 341 #define DFP_TO_DFP      DPD_BID_NAME(__dpd_extendsdtd2,__bid_extendsdtd2)
 342 #endif
 343 #elif WIDTH == 64
 344 #if WIDTH_TO == 32
 345 #define DFP_TO_DFP      DPD_BID_NAME(__dpd_truncddsd2,__bid_truncddsd2)
 346 #elif WIDTH_TO == 128
 347 #define DFP_TO_DFP      DPD_BID_NAME(__dpd_extendddtd2,__bid_extendddtd2)
 348 #endif
 349 #elif WIDTH == 128
 350 #if WIDTH_TO == 32
 351 #define DFP_TO_DFP      DPD_BID_NAME(__dpd_trunctdsd2,__bid_trunctdsd2)
 352 #elif WIDTH_TO == 64
 353 #define DFP_TO_DFP      DPD_BID_NAME(__dpd_trunctddd2,__bid_trunctddd2)
 354 #endif
 355 #endif
 356
 357 /* Names of functions to convert between decimal float and integers.  */
 358
 359 #if WIDTH == 32
 360 #if INT_KIND == 1
 361 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatsisd,__bid_floatsisd)
 362 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixsdsi,__bid_fixsdsi)
 363 #elif INT_KIND == 2
 364 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatdisd,__bid_floatdisd)
 365 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixsddi,__bid_fixsddi)
 366 #elif INT_KIND == 3
 367 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatunssisd,__bid_floatunssisd)
 368 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixunssdsi,__bid_fixunssdsi)
 369 #elif INT_KIND == 4
 370 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatunsdisd,__bid_floatunsdisd)
 371 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixunssddi,__bid_fixunssddi)
 372 #endif
 373 #elif WIDTH == 64
 374 #if INT_KIND == 1
 375 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatsidd,__bid_floatsidd)
 376 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixddsi,__bid_fixddsi)
 377 #elif INT_KIND == 2
 378 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatdidd,__bid_floatdidd)
 379 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixdddi,__bid_fixdddi)
 380 #elif INT_KIND == 3
 381 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatunssidd,__bid_floatunssidd)
 382 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixunsddsi,__bid_fixunsddsi)
 383 #elif INT_KIND == 4
 384 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatunsdidd,__bid_floatunsdidd)
 385 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixunsdddi,__bid_fixunsdddi)
 386 #endif
 387 #elif WIDTH == 128
 388 #if INT_KIND == 1
 389 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatsitd,__bid_floatsitd)
 390 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixtdsi,__bid_fixtdsi)
 391 #elif INT_KIND == 2
 392 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatditd,__bid_floatditd)
 393 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixtddi,__bid_fixtddi)
 394 #elif INT_KIND == 3
 395 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatunssitd,__bid_floatunssitd)
 396 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixunstdsi,__bid_fixunstdsi)
 397 #elif INT_KIND == 4
 398 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatunsditd,__bid_floatunsditd)
 399 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixunstddi,__bid_fixunstddi)
 400 #endif
 401 #endif
 402
 403 /* Names of functions to convert between decimal float and binary float.  */
 404
 405 #if WIDTH == 32
 406 #if BFP_KIND == 1
 407 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_extendsfsd,__bid_extendsfsd)
 408 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_truncsdsf,__bid_truncsdsf)
 409 #elif BFP_KIND == 2
 410 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_truncdfsd,__bid_truncdfsd)
 411 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_extendsddf,__bid_extendsddf)
 412 #elif BFP_KIND == 3
 413 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_truncxfsd,__bid_truncxfsd)
 414 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_extendsdxf,__bid_extendsdxf)
 415 #endif /* BFP_KIND */
 416
 417 #elif WIDTH == 64
 418 #if BFP_KIND == 1
 419 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_extendsfdd,__bid_extendsfdd)
 420 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_truncddsf,__bid_truncddsf)
 421 #elif BFP_KIND == 2
 422 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_extenddfdd,__bid_extenddfdd)
 423 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_truncdddf,__bid_truncdddf)
 424 #elif BFP_KIND == 3
 425 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_truncxfdd,__bid_truncxfdd)
 426 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_extendddxf,__bid_extendddxf)
 427 #endif /* BFP_KIND */
 428
 429 #elif WIDTH == 128
 430 #if BFP_KIND == 1
 431 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_extendsftd,__bid_extendsftd)
 432 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_trunctdsf,__bid_trunctdsf)
 433 #elif BFP_KIND == 2
 434 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_extenddftd,__bid_extenddftd)
 435 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_trunctddf,__bid_trunctddf)
 436 #elif BFP_KIND == 3
 437 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_extendxftd,__bid_extendxftd)
 438 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_trunctdxf,__bid_trunctdxf)
 439 #endif /* BFP_KIND */
 440
 441 #endif /* WIDTH */
 442
 443 /* Some handy typedefs.  */
 444
 445 typedef float SFtype __attribute__ ((mode (SF)));
 446 typedef float DFtype __attribute__ ((mode (DF)));
 447 #if LIBGCC2_HAS_XF_MODE
 448 typedef float XFtype __attribute__ ((mode (XF)));
 449 #endif /* LIBGCC2_HAS_XF_MODE */
 450
 451 typedef int SItype __attribute__ ((mode (SI)));
 452 typedef int DItype __attribute__ ((mode (DI)));
 453 typedef unsigned int USItype __attribute__ ((mode (SI)));
 454 typedef unsigned int UDItype __attribute__ ((mode (DI)));
 455
 456 /* The type of the result of a decimal float comparison.  This must
 457    match `__libgcc_cmp_return__' in GCC for the target.  */
 458
 459 typedef int CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
 460
 461 /* Prototypes.  */
 462
 463 #if defined (L_mul_sd) || defined (L_mul_dd) || defined (L_mul_td)
 464 extern DFP_C_TYPE DFP_MULTIPLY (DFP_C_TYPE, DFP_C_TYPE);
 465 #endif
 466
 467 #if defined (L_div_sd) || defined (L_div_dd) || defined (L_div_td)
 468 extern DFP_C_TYPE DFP_DIVIDE (DFP_C_TYPE, DFP_C_TYPE);
 469 #endif
 470
 471 #if defined (L_addsub_sd) || defined (L_addsub_dd) || defined (L_addsub_td)
 472 extern DFP_C_TYPE DFP_ADD (DFP_C_TYPE, DFP_C_TYPE);
 473 extern DFP_C_TYPE DFP_SUB (DFP_C_TYPE, DFP_C_TYPE);
 474 #endif
 475
 476 #if defined (L_eq_sd) || defined (L_eq_dd) || defined (L_eq_td)
 477 extern CMPtype DFP_EQ (DFP_C_TYPE, DFP_C_TYPE);
 478 #endif
 479
 480 #if defined (L_ne_sd) || defined (L_ne_dd) || defined (L_ne_td)
 481 extern CMPtype DFP_NE (DFP_C_TYPE, DFP_C_TYPE);
 482 #endif
 483
 484 #if defined (L_lt_sd) || defined (L_lt_dd) || defined (L_lt_td)
 485 extern CMPtype DFP_LT (DFP_C_TYPE, DFP_C_TYPE);
 486 #endif
 487
 488 #if defined (L_gt_sd) || defined (L_gt_dd) || defined (L_gt_td)
 489 extern CMPtype DFP_GT (DFP_C_TYPE, DFP_C_TYPE);
 490 #endif
 491
 492 #if defined (L_le_sd) || defined (L_le_dd) || defined (L_le_td)
 493 extern CMPtype DFP_LE (DFP_C_TYPE, DFP_C_TYPE);
 494 #endif
 495
 496 #if defined (L_ge_sd) || defined (L_ge_dd) || defined (L_ge_td)
 497 extern CMPtype DFP_GE (DFP_C_TYPE, DFP_C_TYPE);
 498 #endif
 499
 500 #if defined (L_unord_sd) || defined (L_unord_dd) || defined (L_unord_td)
 501 extern CMPtype DFP_UNORD (DFP_C_TYPE, DFP_C_TYPE);
 502 #endif
 503
 504 #if defined (L_sd_to_dd) || defined (L_sd_to_td) || defined (L_dd_to_sd) \
 505  || defined (L_dd_to_td) || defined (L_td_to_sd) || defined (L_td_to_dd)
 506 extern DFP_C_TYPE_TO DFP_TO_DFP (DFP_C_TYPE);
 507 #endif
 508
 509 #if defined (L_sd_to_si) || defined (L_dd_to_si) || defined (L_td_to_si) \
 510  || defined (L_sd_to_di) || defined (L_dd_to_di) || defined (L_td_to_di) \
 511  || defined (L_sd_to_usi) || defined (L_dd_to_usi) || defined (L_td_to_usi) \
 512  || defined (L_sd_to_udi) || defined (L_dd_to_udi) || defined (L_td_to_udi)
 513 extern INT_TYPE DFP_TO_INT (DFP_C_TYPE);
 514 #endif
 515
 516 #if defined (L_si_to_sd) || defined (L_si_to_dd) || defined (L_si_to_td) \
 517  || defined (L_di_to_sd) || defined (L_di_to_dd) || defined (L_di_to_td) \
 518  || defined (L_usi_to_sd) || defined (L_usi_to_dd) || defined (L_usi_to_td) \
 519  || defined (L_udi_to_sd) || defined (L_udi_to_dd) || defined (L_udi_to_td)
 520 extern DFP_C_TYPE INT_TO_DFP (INT_TYPE);
 521 #endif
 522
 523 #if defined (L_sd_to_sf) || defined (L_dd_to_sf) || defined (L_td_to_sf) \
 524  || defined (L_sd_to_df) || defined (L_dd_to_df) || defined (L_td_to_df) \
 525  || ((defined (L_sd_to_xf) || defined (L_dd_to_xf) || defined (L_td_to_xf)) \
 526      && LIBGCC2_HAS_XF_MODE)
 527 extern BFP_TYPE DFP_TO_BFP (DFP_C_TYPE);
 528 #endif
 529
 530 #if defined (L_sf_to_sd) || defined (L_sf_to_dd) || defined (L_sf_to_td) \
 531  || defined (L_df_to_sd) || defined (L_df_to_dd) || defined (L_df_to_td) \
 532  || ((defined (L_xf_to_sd) || defined (L_xf_to_dd) || defined (L_xf_to_td)) \
 533      && LIBGCC2_HAS_XF_MODE)
 534 extern DFP_C_TYPE BFP_TO_DFP (BFP_TYPE);
 535 #endif
 536
 537 #endif /* _DFPBIT_H */