libgcc/dfp-bit.h

   1 /* Header file for dfp-bit.c.
   2    Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 Under Section 7 of GPL version 3, you are granted additional
  18 permissions described in the GCC Runtime Library Exception, version
  19 3.1, as published by the Free Software Foundation.
  20
  21 You should have received a copy of the GNU General Public License and
  22 a copy of the GCC Runtime Library Exception along with this program;
  23 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 <http://www.gnu.org/licenses/>.  */
  25
  26 #ifndef _DFPBIT_H
  27 #define _DFPBIT_H
  28
  29 #include <float.h>
  30 #include <fenv.h>
  31 #include <decRound.h>
  32 #include <decExcept.h>
  33 #include "tconfig.h"
  34 #include "coretypes.h"
  35 #include "tm.h"
  36
  37 #ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
  38 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE
  39 #endif
  40
  41 /* We need to know the size of long double that the C library supports.
  42    Don't use LIBGCC2_HAS_XF_MODE or LIBGCC2_HAS_TF_MODE here because
  43    some targets set both of those.  */
  44
  45 #define LONG_DOUBLE_HAS_XF_MODE \
  46   (BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80)
  47
  48 #define LONG_DOUBLE_HAS_TF_MODE \
  49   (BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128)
  50
  51 /* Depending on WIDTH, define a number of macros:
  52
  53    DFP_C_TYPE: type of the arguments to the libgcc functions;
  54         (eg _Decimal32)
  55
  56    IEEE_TYPE: the corresponding (encoded) IEEE754 type;
  57         (eg decimal32)
  58
  59    TO_INTERNAL: the name of the decNumber function to convert an
  60    encoded value into the decNumber internal representation;
  61
  62    TO_ENCODED: the name of the decNumber function to convert an
  63    internally represented decNumber into the encoded
  64    representation.
  65
  66    FROM_STRING: the name of the decNumber function to read an
  67    encoded value from a string.
  68
  69    TO_STRING: the name of the decNumber function to write an
  70    encoded value to a string.  */
  71
  72 #if WIDTH == 32
  73 #define DFP_C_TYPE      _Decimal32
  74 #define IEEE_TYPE       decimal32
  75 #define HOST_TO_IEEE    __host_to_ieee_32
  76 #define IEEE_TO_HOST    __ieee_to_host_32
  77 #define TO_INTERNAL     __decimal32ToNumber
  78 #define TO_ENCODED      __decimal32FromNumber
  79 #define FROM_STRING     __decimal32FromString
  80 #define TO_STRING       __decimal32ToString
  81 #elif WIDTH == 64
  82 #define DFP_C_TYPE      _Decimal64
  83 #define IEEE_TYPE       decimal64
  84 #define HOST_TO_IEEE    __host_to_ieee_64
  85 #define IEEE_TO_HOST    __ieee_to_host_64
  86 #define TO_INTERNAL     __decimal64ToNumber
  87 #define TO_ENCODED      __decimal64FromNumber
  88 #define FROM_STRING     __decimal64FromString
  89 #define TO_STRING       __decimal64ToString
  90 #elif WIDTH == 128
  91 #define DFP_C_TYPE      _Decimal128
  92 #define IEEE_TYPE       decimal128
  93 #define HOST_TO_IEEE    __host_to_ieee_128
  94 #define IEEE_TO_HOST    __ieee_to_host_128
  95 #define TO_INTERNAL     __decimal128ToNumber
  96 #define TO_ENCODED      __decimal128FromNumber
  97 #define FROM_STRING     __decimal128FromString
  98 #define TO_STRING       __decimal128ToString
  99 #else
 100 #error invalid decimal float word width
 101 #endif
 102
 103 /* We define __DEC_EVAL_METHOD__ to 2, saying that we evaluate all
 104    operations and constants to the range and precision of the _Decimal128
 105    type.  Make it so.  */
 106 #if WIDTH == 32
 107 #define CONTEXT_INIT DEC_INIT_DECIMAL32
 108 #elif WIDTH == 64
 109 #define CONTEXT_INIT DEC_INIT_DECIMAL64
 110 #elif WIDTH == 128
 111 #define CONTEXT_INIT DEC_INIT_DECIMAL128
 112 #endif
 113
 114 #ifndef DFP_INIT_ROUNDMODE
 115 #define DFP_INIT_ROUNDMODE(A) A = DEC_ROUND_HALF_EVEN
 116 #endif
 117
 118 #ifdef DFP_EXCEPTIONS_ENABLED
 119 /* Return IEEE exception flags based on decNumber status flags.  */
 120 #define DFP_IEEE_FLAGS(DEC_FLAGS) __extension__                 \
 121 ({int _fe_flags = 0;                                            \
 122   if ((dec_flags & DEC_IEEE_854_Division_by_zero) != 0)         \
 123     _fe_flags |= FE_DIVBYZERO;                                  \
 124   if ((dec_flags & DEC_IEEE_854_Inexact) != 0)                  \
 125     _fe_flags |= FE_INEXACT;                                    \
 126   if ((dec_flags & DEC_IEEE_854_Invalid_operation) != 0)        \
 127     _fe_flags |= FE_INVALID;                                    \
 128   if ((dec_flags & DEC_IEEE_854_Overflow) != 0)                 \
 129     _fe_flags |= FE_OVERFLOW;                                   \
 130   if ((dec_flags & DEC_IEEE_854_Underflow) != 0)                \
 131     _fe_flags |= FE_UNDERFLOW;                                  \
 132   _fe_flags; })
 133 #else
 134 #define DFP_EXCEPTIONS_ENABLED 0
 135 #define DFP_IEEE_FLAGS(A) 0
 136 #define DFP_HANDLE_EXCEPTIONS(A) do {} while (0)
 137 #endif
 138
 139 /* Conversions between different decimal float types use WIDTH_TO to
 140    determine additional macros to define.  */
 141
 142 #if defined (L_dd_to_sd) || defined (L_td_to_sd)
 143 #define WIDTH_TO 32
 144 #elif defined (L_sd_to_dd) || defined (L_td_to_dd)
 145 #define WIDTH_TO 64
 146 #elif defined (L_sd_to_td) || defined (L_dd_to_td)
 147 #define WIDTH_TO 128
 148 #endif
 149
 150 /* If WIDTH_TO is defined, define additional macros:
 151
 152    DFP_C_TYPE_TO: type of the result of dfp to dfp conversion.
 153
 154    IEEE_TYPE_TO: the corresponding (encoded) IEEE754 type.
 155
 156    TO_ENCODED_TO: the name of the decNumber function to convert an
 157    internally represented decNumber into the encoded representation
 158    for the destination.  */
 159
 160 #if WIDTH_TO == 32
 161 #define DFP_C_TYPE_TO   _Decimal32
 162 #define IEEE_TYPE_TO    decimal32
 163 #define TO_ENCODED_TO   __decimal32FromNumber
 164 #define IEEE_TO_HOST_TO __ieee_to_host_32
 165 #elif WIDTH_TO == 64
 166 #define DFP_C_TYPE_TO   _Decimal64
 167 #define IEEE_TYPE_TO    decimal64
 168 #define TO_ENCODED_TO   __decimal64FromNumber
 169 #define IEEE_TO_HOST_TO __ieee_to_host_64
 170 #elif WIDTH_TO == 128
 171 #define DFP_C_TYPE_TO   _Decimal128
 172 #define IEEE_TYPE_TO    decimal128
 173 #define TO_ENCODED_TO   __decimal128FromNumber
 174 #define IEEE_TO_HOST_TO __ieee_to_host_128
 175 #endif
 176
 177 /* Conversions between decimal float types and integral types use INT_KIND
 178    to determine the data type and C functions to use.  */
 179
 180 #if defined (L_sd_to_si) || defined (L_dd_to_si) || defined (L_td_to_si)  \
 181    || defined (L_si_to_sd) || defined (L_si_to_dd) || defined (L_si_to_td)
 182 #define INT_KIND 1
 183 #elif defined (L_sd_to_di) || defined (L_dd_to_di) || defined (L_td_to_di) \
 184    || defined (L_di_to_sd) || defined (L_di_to_dd) || defined (L_di_to_td)
 185 #define INT_KIND 2
 186 #elif defined (L_sd_to_usi) || defined (L_dd_to_usi) || defined (L_td_to_usi) \
 187    || defined (L_usi_to_sd) || defined (L_usi_to_dd) || defined (L_usi_to_td)
 188 #define INT_KIND 3
 189 #elif defined (L_sd_to_udi) || defined (L_dd_to_udi) || defined (L_td_to_udi) \
 190    || defined (L_udi_to_sd) || defined (L_udi_to_dd) || defined (L_udi_to_td)
 191 #define INT_KIND 4
 192 #endif
 193
 194 /*  If INT_KIND is defined, define additional macros:
 195
 196     INT_TYPE: The integer data type.
 197
 198     INT_FMT: The format string for writing the integer to a string.
 199
 200     CAST_FOR_FMT: Cast variable of INT_KIND to C type for sprintf.
 201     This works for ILP32 and LP64, won't for other type size systems.
 202
 203     STR_TO_INT: The function to read the integer from a string.  */
 204
 205 #if INT_KIND == 1
 206 #define INT_TYPE SItype
 207 #define INT_FMT "%d"
 208 #define CAST_FOR_FMT(A) (int)A
 209 #define STR_TO_INT strtol
 210 #elif INT_KIND == 2
 211 #define INT_TYPE DItype
 212 #define INT_FMT "%lld"
 213 #define CAST_FOR_FMT(A) (long long)A
 214 #define STR_TO_INT strtoll
 215 #elif INT_KIND == 3
 216 #define INT_TYPE USItype
 217 #define INT_FMT "%u"
 218 #define CAST_FOR_FMT(A) (unsigned int)A
 219 #define STR_TO_INT strtoul
 220 #elif INT_KIND == 4
 221 #define INT_TYPE UDItype
 222 #define INT_FMT "%llu"
 223 #define CAST_FOR_FMT(A) (unsigned long long)A
 224 #define STR_TO_INT strtoull
 225 #endif
 226
 227 /* Conversions between decimal float types and binary float types use
 228    BFP_KIND to determine the data type and C functions to use.  */
 229
 230 #if defined (L_sd_to_sf) || defined (L_dd_to_sf) || defined (L_td_to_sf) \
 231  || defined (L_sf_to_sd) || defined (L_sf_to_dd) || defined (L_sf_to_td)
 232 #define BFP_KIND 1
 233 #elif defined (L_sd_to_df) || defined (L_dd_to_df ) || defined (L_td_to_df) \
 234  ||   defined (L_df_to_sd) || defined (L_df_to_dd) || defined (L_df_to_td)
 235 #define BFP_KIND 2
 236 #elif defined (L_sd_to_xf) || defined (L_dd_to_xf ) || defined (L_td_to_xf) \
 237  ||   defined (L_xf_to_sd) || defined (L_xf_to_dd) || defined (L_xf_to_td)
 238 #define BFP_KIND 3
 239 #elif defined (L_sd_to_tf) || defined (L_dd_to_tf) || defined (L_td_to_tf) \
 240  ||   defined (L_tf_to_sd) || defined (L_tf_to_dd) || defined (L_tf_to_td)
 241 #define BFP_KIND 4
 242 #endif
 243
 244 /*  If BFP_KIND is defined, define additional macros:
 245
 246     BFP_TYPE: The binary floating point data type.
 247
 248     BFP_FMT: The format string for writing the value to a string.
 249     The number of decimal digits printed is
 250        ceil (nbits / log2 (10.) + 1)
 251     as described in David Matula's CACM 19(3) 716-723 June 1968 paper.
 252
 253     BFP_VIA_TYPE: Type to which to cast a variable of BPF_TYPE for a
 254     call to sprintf.
 255
 256     STR_TO_BFP: The function to read the value from a string.  */
 257
 258 #if BFP_KIND == 1
 259 #define BFP_TYPE SFtype
 260 #define BFP_FMT "%.9e"
 261 #define BFP_VIA_TYPE double
 262 #define STR_TO_BFP strtof
 263
 264 #elif BFP_KIND == 2
 265 #define BFP_TYPE DFtype
 266 #define BFP_FMT "%.17e"
 267 #define BFP_VIA_TYPE double
 268 #define STR_TO_BFP strtod
 269
 270 #elif BFP_KIND == 3
 271 #if LONG_DOUBLE_HAS_XF_MODE
 272 #define BFP_TYPE XFtype
 273 #define BFP_FMT "%.21Le"
 274 #define BFP_VIA_TYPE long double
 275 #define STR_TO_BFP strtold
 276 #endif /* LONG_DOUBLE_HAS_XF_MODE */
 277
 278 #elif BFP_KIND == 4
 279 #if LONG_DOUBLE_HAS_TF_MODE
 280 #define BFP_TYPE TFtype
 281 #if LDBL_MANT_DIG == 106
 282 #define BFP_FMT "%.33Le"
 283 #elif LDBL_MANT_DIG == 113
 284 #define BFP_FMT "%.36Le"
 285 #else
 286 #error "unknown long double size, cannot define BFP_FMT"
 287 #endif /* LDBL_MANT_DIG */
 288 #define STR_TO_BFP strtold
 289 #define BFP_VIA_TYPE long double
 290 #endif /* LONG_DOUBLE_HAS_TF_MODE */
 291
 292 #endif /* BFP_KIND */
 293
 294 #if WIDTH == 128 || WIDTH_TO == 128
 295 #include "decimal128.h"
 296 #include "decQuad.h"
 297 #endif
 298 #if WIDTH == 64 || WIDTH_TO == 64
 299 #include "decimal64.h"
 300 #include "decDouble.h"
 301 #endif
 302 #if WIDTH == 32 || WIDTH_TO == 32
 303 #include "decimal32.h"
 304 #include "decSingle.h"
 305 #endif
 306 #include "decNumber.h"
 307
 308 /* Names of arithmetic functions.  */
 309
 310 #if ENABLE_DECIMAL_BID_FORMAT
 311 #define DPD_BID_NAME(DPD,BID) BID
 312 #else
 313 #define DPD_BID_NAME(DPD,BID) DPD
 314 #endif
 315
 316 #if WIDTH == 32
 317 #define DFP_ADD         DPD_BID_NAME(__dpd_addsd3,__bid_addsd3)
 318 #define DFP_SUB         DPD_BID_NAME(__dpd_subsd3,__bid_subsd3)
 319 #define DFP_MULTIPLY    DPD_BID_NAME(__dpd_mulsd3,__bid_mulsd3)
 320 #define DFP_DIVIDE      DPD_BID_NAME(__dpd_divsd3,__bid_divsd3)
 321 #define DFP_EQ          DPD_BID_NAME(__dpd_eqsd2,__bid_eqsd2)
 322 #define DFP_NE          DPD_BID_NAME(__dpd_nesd2,__bid_nesd2)
 323 #define DFP_LT          DPD_BID_NAME(__dpd_ltsd2,__bid_ltsd2)
 324 #define DFP_GT          DPD_BID_NAME(__dpd_gtsd2,__bid_gtsd2)
 325 #define DFP_LE          DPD_BID_NAME(__dpd_lesd2,__bid_lesd2)
 326 #define DFP_GE          DPD_BID_NAME(__dpd_gesd2,__bid_gesd2)
 327 #define DFP_UNORD       DPD_BID_NAME(__dpd_unordsd2,__bid_unordsd2)
 328 #elif WIDTH == 64
 329 #define DFP_ADD         DPD_BID_NAME(__dpd_adddd3,__bid_adddd3)
 330 #define DFP_SUB         DPD_BID_NAME(__dpd_subdd3,__bid_subdd3)
 331 #define DFP_MULTIPLY    DPD_BID_NAME(__dpd_muldd3,__bid_muldd3)
 332 #define DFP_DIVIDE      DPD_BID_NAME(__dpd_divdd3,__bid_divdd3)
 333 #define DFP_EQ          DPD_BID_NAME(__dpd_eqdd2,__bid_eqdd2)
 334 #define DFP_NE          DPD_BID_NAME(__dpd_nedd2,__bid_nedd2)
 335 #define DFP_LT          DPD_BID_NAME(__dpd_ltdd2,__bid_ltdd2)
 336 #define DFP_GT          DPD_BID_NAME(__dpd_gtdd2,__bid_gtdd2)
 337 #define DFP_LE          DPD_BID_NAME(__dpd_ledd2,__bid_ledd2)
 338 #define DFP_GE          DPD_BID_NAME(__dpd_gedd2,__bid_gedd2)
 339 #define DFP_UNORD       DPD_BID_NAME(__dpd_unorddd2,__bid_unorddd2)
 340 #elif WIDTH == 128
 341 #define DFP_ADD         DPD_BID_NAME(__dpd_addtd3,__bid_addtd3)
 342 #define DFP_SUB         DPD_BID_NAME(__dpd_subtd3,__bid_subtd3)
 343 #define DFP_MULTIPLY    DPD_BID_NAME(__dpd_multd3,__bid_multd3)
 344 #define DFP_DIVIDE      DPD_BID_NAME(__dpd_divtd3,__bid_divtd3)
 345 #define DFP_EQ          DPD_BID_NAME(__dpd_eqtd2,__bid_eqtd2)
 346 #define DFP_NE          DPD_BID_NAME(__dpd_netd2,__bid_netd2)
 347 #define DFP_LT          DPD_BID_NAME(__dpd_lttd2,__bid_lttd2)
 348 #define DFP_GT          DPD_BID_NAME(__dpd_gttd2,__bid_gttd2)
 349 #define DFP_LE          DPD_BID_NAME(__dpd_letd2,__bid_letd2)
 350 #define DFP_GE          DPD_BID_NAME(__dpd_getd2,__bid_getd2)
 351 #define DFP_UNORD       DPD_BID_NAME(__dpd_unordtd2,__bid_unordtd2)
 352 #endif
 353
 354 /* Names of decNumber functions for DPD arithmetic.  */
 355
 356 #if WIDTH == 32
 357 #define decFloat                decDouble
 358 #define DFP_BINARY_OP           d32_binary_op
 359 #define DFP_COMPARE_OP          d32_compare_op
 360 #define DEC_FLOAT_ADD           decDoubleAdd
 361 #define DEC_FLOAT_SUBTRACT      decDoubleSubtract
 362 #define DEC_FLOAT_MULTIPLY      decDoubleMultiply
 363 #define DEC_FLOAT_DIVIDE        decDoubleDivide
 364 #define DEC_FLOAT_COMPARE       decDoubleCompare
 365 #define DEC_FLOAT_IS_ZERO       decDoubleIsZero
 366 #define DEC_FLOAT_IS_NAN        decDoubleIsNaN
 367 #define DEC_FLOAT_IS_SIGNED     decDoubleIsSigned
 368 #elif WIDTH == 64
 369 #define DFP_BINARY_OP           dnn_binary_op
 370 #define DFP_COMPARE_OP          dnn_compare_op
 371 #define decFloat                decDouble
 372 #define DEC_FLOAT_ADD           decDoubleAdd
 373 #define DEC_FLOAT_SUBTRACT      decDoubleSubtract
 374 #define DEC_FLOAT_MULTIPLY      decDoubleMultiply
 375 #define DEC_FLOAT_DIVIDE        decDoubleDivide
 376 #define DEC_FLOAT_COMPARE       decDoubleCompare
 377 #define DEC_FLOAT_IS_ZERO       decDoubleIsZero
 378 #define DEC_FLOAT_IS_NAN        decDoubleIsNaN
 379 #define DEC_FLOAT_IS_SIGNED     decDoubleIsSigned
 380 #elif WIDTH == 128
 381 #define DFP_BINARY_OP           dnn_binary_op
 382 #define DFP_COMPARE_OP          dnn_compare_op
 383 #define decFloat                decQuad
 384 #define DEC_FLOAT_ADD           decQuadAdd
 385 #define DEC_FLOAT_SUBTRACT      decQuadSubtract
 386 #define DEC_FLOAT_MULTIPLY      decQuadMultiply
 387 #define DEC_FLOAT_DIVIDE        decQuadDivide
 388 #define DEC_FLOAT_COMPARE       decQuadCompare
 389 #define DEC_FLOAT_IS_ZERO       decQuadIsZero
 390 #define DEC_FLOAT_IS_NAN        decQuadIsNaN
 391 #define DEC_FLOAT_IS_SIGNED     decQuadIsSigned
 392 #endif
 393
 394 /* Names of functions to convert between different decimal float types.  */
 395
 396 #if WIDTH == 32
 397 #if WIDTH_TO == 64
 398 #define DFP_TO_DFP      DPD_BID_NAME(__dpd_extendsddd2,__bid_extendsddd2)
 399 #elif WIDTH_TO == 128
 400 #define DFP_TO_DFP      DPD_BID_NAME(__dpd_extendsdtd2,__bid_extendsdtd2)
 401 #endif
 402 #elif WIDTH == 64
 403 #if WIDTH_TO == 32
 404 #define DFP_TO_DFP      DPD_BID_NAME(__dpd_truncddsd2,__bid_truncddsd2)
 405 #elif WIDTH_TO == 128
 406 #define DFP_TO_DFP      DPD_BID_NAME(__dpd_extendddtd2,__bid_extendddtd2)
 407 #endif
 408 #elif WIDTH == 128
 409 #if WIDTH_TO == 32
 410 #define DFP_TO_DFP      DPD_BID_NAME(__dpd_trunctdsd2,__bid_trunctdsd2)
 411 #elif WIDTH_TO == 64
 412 #define DFP_TO_DFP      DPD_BID_NAME(__dpd_trunctddd2,__bid_trunctddd2)
 413 #endif
 414 #endif
 415
 416 /* Names of functions to convert between decimal float and integers.  */
 417
 418 #if WIDTH == 32
 419 #if INT_KIND == 1
 420 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatsisd,__bid_floatsisd)
 421 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixsdsi,__bid_fixsdsi)
 422 #define DEC_FLOAT_FROM_INT decDoubleFromInt32
 423 #define DEC_FLOAT_TO_INT   decDoubleToInt32
 424 #elif INT_KIND == 2
 425 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatdisd,__bid_floatdisd)
 426 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixsddi,__bid_fixsddi)
 427 #elif INT_KIND == 3
 428 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatunssisd,__bid_floatunssisd)
 429 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixunssdsi,__bid_fixunssdsi)
 430 #define DEC_FLOAT_FROM_INT decDoubleFromUInt32
 431 #define DEC_FLOAT_TO_INT   decDoubleToUInt32
 432 #elif INT_KIND == 4
 433 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatunsdisd,__bid_floatunsdisd)
 434 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixunssddi,__bid_fixunssddi)
 435 #endif
 436 #elif WIDTH == 64
 437 #define decFloat        decDouble
 438 #if INT_KIND == 1
 439 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatsidd,__bid_floatsidd)
 440 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixddsi,__bid_fixddsi)
 441 #define DEC_FLOAT_FROM_INT decDoubleFromInt32
 442 #define DEC_FLOAT_TO_INT   decDoubleToInt32
 443 #elif INT_KIND == 2
 444 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatdidd,__bid_floatdidd)
 445 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixdddi,__bid_fixdddi)
 446 #elif INT_KIND == 3
 447 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatunssidd,__bid_floatunssidd)
 448 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixunsddsi,__bid_fixunsddsi)
 449 #define DEC_FLOAT_FROM_INT decDoubleFromUInt32
 450 #define DEC_FLOAT_TO_INT   decDoubleToUInt32
 451 #elif INT_KIND == 4
 452 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatunsdidd,__bid_floatunsdidd)
 453 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixunsdddi,__bid_fixunsdddi)
 454 #endif
 455 #elif WIDTH == 128
 456 #define decFloat        decQuad
 457 #if INT_KIND == 1
 458 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatsitd,__bid_floatsitd)
 459 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixtdsi,__bid_fixtdsi)
 460 #define DEC_FLOAT_FROM_INT decQuadFromInt32
 461 #define DEC_FLOAT_TO_INT   decQuadToInt32
 462 #elif INT_KIND == 2
 463 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatditd,__bid_floatditd)
 464 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixtddi,__bid_fixtddi)
 465 #elif INT_KIND == 3
 466 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatunssitd,__bid_floatunssitd)
 467 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixunstdsi,__bid_fixunstdsi)
 468 #define DEC_FLOAT_FROM_INT decQuadFromUInt32
 469 #define DEC_FLOAT_TO_INT   decQuadToUInt32
 470 #elif INT_KIND == 4
 471 #define INT_TO_DFP      DPD_BID_NAME(__dpd_floatunsditd,__bid_floatunsditd)
 472 #define DFP_TO_INT      DPD_BID_NAME(__dpd_fixunstddi,__bid_fixunstddi)
 473 #endif
 474 #endif
 475
 476 /* Names of functions to convert between decimal float and binary float.  */
 477
 478 #if WIDTH == 32
 479 #if BFP_KIND == 1
 480 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_extendsfsd,__bid_extendsfsd)
 481 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_truncsdsf,__bid_truncsdsf)
 482 #elif BFP_KIND == 2
 483 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_truncdfsd,__bid_truncdfsd)
 484 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_extendsddf,__bid_extendsddf)
 485 #elif BFP_KIND == 3
 486 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_truncxfsd,__bid_truncxfsd)
 487 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_extendsdxf,__bid_extendsdxf)
 488 #elif BFP_KIND == 4
 489 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_trunctfsd,__bid_trunctfsd)
 490 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_extendsdtf,__bid_extendsdtf)
 491 #endif /* BFP_KIND */
 492
 493 #elif WIDTH == 64
 494 #if BFP_KIND == 1
 495 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_extendsfdd,__bid_extendsfdd)
 496 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_truncddsf,__bid_truncddsf)
 497 #elif BFP_KIND == 2
 498 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_extenddfdd,__bid_extenddfdd)
 499 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_truncdddf,__bid_truncdddf)
 500 #elif BFP_KIND == 3
 501 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_truncxfdd,__bid_truncxfdd)
 502 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_extendddxf,__bid_extendddxf)
 503 #elif BFP_KIND == 4
 504 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_trunctfdd,__bid_trunctfdd)
 505 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_extendddtf,__bid_extendddtf)
 506 #endif /* BFP_KIND */
 507
 508 #elif WIDTH == 128
 509 #if BFP_KIND == 1
 510 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_extendsftd,__bid_extendsftd)
 511 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_trunctdsf,__bid_trunctdsf)
 512 #elif BFP_KIND == 2
 513 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_extenddftd,__bid_extenddftd)
 514 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_trunctddf,__bid_trunctddf)
 515 #elif BFP_KIND == 3
 516 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_extendxftd,__bid_extendxftd)
 517 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_trunctdxf,__bid_trunctdxf)
 518 #elif BFP_KIND == 4
 519 #define BFP_TO_DFP      DPD_BID_NAME(__dpd_extendtftd,__bid_extendtftd)
 520 #define DFP_TO_BFP      DPD_BID_NAME(__dpd_trunctdtf,__bid_trunctdtf)
 521 #endif /* BFP_KIND */
 522
 523 #endif /* WIDTH */
 524
 525 /* Some handy typedefs.  */
 526
 527 typedef float SFtype __attribute__ ((mode (SF)));
 528 typedef float DFtype __attribute__ ((mode (DF)));
 529 #if LONG_DOUBLE_HAS_XF_MODE
 530 typedef float XFtype __attribute__ ((mode (XF)));
 531 #endif /* LONG_DOUBLE_HAS_XF_MODE */
 532 #if LONG_DOUBLE_HAS_TF_MODE
 533 typedef float TFtype __attribute__ ((mode (TF)));
 534 #endif /* LONG_DOUBLE_HAS_TF_MODE */
 535
 536 typedef int SItype __attribute__ ((mode (SI)));
 537 typedef int DItype __attribute__ ((mode (DI)));
 538 typedef unsigned int USItype __attribute__ ((mode (SI)));
 539 typedef unsigned int UDItype __attribute__ ((mode (DI)));
 540
 541 /* The type of the result of a decimal float comparison.  This must
 542    match `__libgcc_cmp_return__' in GCC for the target.  */
 543
 544 typedef int CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
 545
 546 /* Prototypes.  */
 547
 548 #if defined (L_mul_sd) || defined (L_mul_dd) || defined (L_mul_td)
 549 extern DFP_C_TYPE DFP_MULTIPLY (DFP_C_TYPE, DFP_C_TYPE);
 550 #endif
 551
 552 #if defined (L_div_sd) || defined (L_div_dd) || defined (L_div_td)
 553 extern DFP_C_TYPE DFP_DIVIDE (DFP_C_TYPE, DFP_C_TYPE);
 554 #endif
 555
 556 #if defined (L_addsub_sd) || defined (L_addsub_dd) || defined (L_addsub_td)
 557 extern DFP_C_TYPE DFP_ADD (DFP_C_TYPE, DFP_C_TYPE);
 558 extern DFP_C_TYPE DFP_SUB (DFP_C_TYPE, DFP_C_TYPE);
 559 #endif
 560
 561 #if defined (L_eq_sd) || defined (L_eq_dd) || defined (L_eq_td)
 562 extern CMPtype DFP_EQ (DFP_C_TYPE, DFP_C_TYPE);
 563 #endif
 564
 565 #if defined (L_ne_sd) || defined (L_ne_dd) || defined (L_ne_td)
 566 extern CMPtype DFP_NE (DFP_C_TYPE, DFP_C_TYPE);
 567 #endif
 568
 569 #if defined (L_lt_sd) || defined (L_lt_dd) || defined (L_lt_td)
 570 extern CMPtype DFP_LT (DFP_C_TYPE, DFP_C_TYPE);
 571 #endif
 572
 573 #if defined (L_gt_sd) || defined (L_gt_dd) || defined (L_gt_td)
 574 extern CMPtype DFP_GT (DFP_C_TYPE, DFP_C_TYPE);
 575 #endif
 576
 577 #if defined (L_le_sd) || defined (L_le_dd) || defined (L_le_td)
 578 extern CMPtype DFP_LE (DFP_C_TYPE, DFP_C_TYPE);
 579 #endif
 580
 581 #if defined (L_ge_sd) || defined (L_ge_dd) || defined (L_ge_td)
 582 extern CMPtype DFP_GE (DFP_C_TYPE, DFP_C_TYPE);
 583 #endif
 584
 585 #if defined (L_unord_sd) || defined (L_unord_dd) || defined (L_unord_td)
 586 extern CMPtype DFP_UNORD (DFP_C_TYPE, DFP_C_TYPE);
 587 #endif
 588
 589 #if defined (L_sd_to_dd) || defined (L_sd_to_td) || defined (L_dd_to_sd) \
 590  || defined (L_dd_to_td) || defined (L_td_to_sd) || defined (L_td_to_dd)
 591 extern DFP_C_TYPE_TO DFP_TO_DFP (DFP_C_TYPE);
 592 #endif
 593
 594 #if defined (L_sd_to_si) || defined (L_dd_to_si) || defined (L_td_to_si) \
 595  || defined (L_sd_to_di) || defined (L_dd_to_di) || defined (L_td_to_di) \
 596  || defined (L_sd_to_usi) || defined (L_dd_to_usi) || defined (L_td_to_usi) \
 597  || defined (L_sd_to_udi) || defined (L_dd_to_udi) || defined (L_td_to_udi)
 598 extern INT_TYPE DFP_TO_INT (DFP_C_TYPE);
 599 #endif
 600
 601 #if defined (L_si_to_sd) || defined (L_si_to_dd) || defined (L_si_to_td) \
 602  || defined (L_di_to_sd) || defined (L_di_to_dd) || defined (L_di_to_td) \
 603  || defined (L_usi_to_sd) || defined (L_usi_to_dd) || defined (L_usi_to_td) \
 604  || defined (L_udi_to_sd) || defined (L_udi_to_dd) || defined (L_udi_to_td)
 605 extern DFP_C_TYPE INT_TO_DFP (INT_TYPE);
 606 #endif
 607
 608 #if defined (L_sd_to_sf) || defined (L_dd_to_sf) || defined (L_td_to_sf) \
 609  || defined (L_sd_to_df) || defined (L_dd_to_df) || defined (L_td_to_df) \
 610  || ((defined (L_sd_to_xf) || defined (L_dd_to_xf) || defined (L_td_to_xf)) \
 611      && LONG_DOUBLE_HAS_XF_MODE) \
 612  || ((defined (L_sd_to_tf) || defined (L_dd_to_tf) || defined (L_td_to_tf)) \
 613      && LONG_DOUBLE_HAS_TF_MODE)
 614 extern BFP_TYPE DFP_TO_BFP (DFP_C_TYPE);
 615 #endif
 616
 617 #if defined (L_sf_to_sd) || defined (L_sf_to_dd) || defined (L_sf_to_td) \
 618  || defined (L_df_to_sd) || defined (L_df_to_dd) || defined (L_df_to_td) \
 619  || ((defined (L_xf_to_sd) || defined (L_xf_to_dd) || defined (L_xf_to_td)) \
 620      && LONG_DOUBLE_HAS_XF_MODE) \
 621  || ((defined (L_tf_to_sd) || defined (L_tf_to_dd) || defined (L_tf_to_td)) \
 622      && LONG_DOUBLE_HAS_TF_MODE)
 623 extern DFP_C_TYPE BFP_TO_DFP (BFP_TYPE);
 624 #endif
 625
 626 #endif /* _DFPBIT_H */