sdcc/support/util/pstdint.h

   1 /*  A portable stdint.h
   2  *
   3  *  Copyright (c) 2005 Paul Hsieh
   4  *
   5  *  Redistribution and use in source and binary forms, with or without
   6  *  modification, are permitted provided that the following conditions
   7  *  are met:
   8  *
   9  *      Redistributions of source code must retain the above copyright
  10  *      notice, this list of conditions and the following disclaimer.
  11  *
  12  *      Redistributions in binary form must not misrepresent the orignal
  13  *      source in the documentation and/or other materials provided
  14  *      with the distribution.
  15  *
  16  *      The names of the authors not its contributors may be used to
  17  *      endorse or promote products derived from this software without
  18  *      specific prior written permission.
  19  *
  20  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23  *  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  24  *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  26  *  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  27  *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  29  *  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  31  *  OF THE POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  ****************************************************************************
  34  *
  35  *  Version 0.1.5
  36  *
  37  *  The ANSI C standard committee, for the C99 standard, specified the
  38  *  inclusion of a new standard include file called stdint.h.  This is
  39  *  a very useful and long desired include file which contains several
  40  *  very precise definitions for integer scalar types that is
  41  *  critically important for making portable several classes of
  42  *  applications including cryptography, hashing, variable length
  43  *  integer libraries and so on.  But for most developers its likely
  44  *  useful just for programming sanity.
  45  *
  46  *  The problem is that most compiler vendors have decided not to
  47  *  implement the C99 standard, and the next C++ language standard
  48  *  (which has a lot more mindshare these days) will be a long time in
  49  *  coming and its unknown whether or not it will include stdint.h or
  50  *  how much adoption it will have.  Either way, it will be a long time
  51  *  before all compilers come with a stdint.h and it also does nothing
  52  *  for the extremely large number of compilers available today which
  53  *  do not include this file, or anything comparable to it.
  54  *
  55  *  So that's what this file is all about.  Its an attempt to build a
  56  *  single universal include file that works on as many platforms as
  57  *  possible to deliver what stdint.h is supposed to.  A few things
  58  *  that should be noted about this file:
  59  *
  60  *    1) It is not guaranteed to be portable and/or present an identical
  61  *       interface on all platforms.  The extreme variability of the
  62  *       ANSI C standard makes this an impossibility right from the
  63  *       very get go. Its really only meant to be useful for the vast
  64  *       majority of platforms that possess the capability of
  65  *       implementing usefully and precisely defined, standard sized
  66  *       integer scalars.  Systems which are not intrinsically 2s
  67  *       complement may produce invalid constants.
  68  *
  69  *    2) There is an unavoidable use of non-reserved symbols.
  70  *
  71  *    3) Other standard include files are invoked.
  72  *
  73  *    4) This file may come in conflict with future platforms that do
  74  *       include stdint.h.  The hope is that one or the other can be
  75  *       used with no real difference.
  76  *
  77  *    5) In the current verison, if your platform can't represent
  78  *       int32_t, int16_t and int8_t, it just dumps out with a compiler
  79  *       error.
  80  *
  81  *    6) 64 bit integers may or may not be defined.  Test for their
  82  *       presence with the test: #ifdef INT64_MAX or #ifdef UINT64_MAX.
  83  *       Note that this is different from the C99 specification which
  84  *       requires the existence of 64 bit support in the compiler.  If
  85  *       this is not defined for your platform, yet it is capable of
  86  *       dealing with 64 bits then it is because this file has not yet
  87  *       been extended to cover all of your system's capabilities.
  88  *
  89  *    7) (u)intptr_t may or may not be defined.  Test for its presence
  90  *       with the test: #ifdef PTRDIFF_MAX.  If this is not defined
  91  *       for your platform, then it is because this file has not yet
  92  *       been extended to cover all of your system's capabilities, not
  93  *       because its optional.
  94  *
  95  *    8) The following might not been defined even if your platform is
  96  *       capable of defining it:
  97  *
  98  *       WCHAR_MIN
  99  *       WCHAR_MAX
 100  *       (u)int64_t
 101  *       PTRDIFF_MIN
 102  *       PTRDIFF_MAX
 103  *       (u)intptr_t
 104  *
 105  *    9) The following have not been defined:
 106  *
 107  *       WINT_MIN
 108  *       WINT_MAX
 109  *
 110  *   10) The criteria for defining (u)int_least(*)_t isn't clear,
 111  *       except for systems which don't have a type that precisely
 112  *       defined 8, 16, or 32 bit types (which this include file does
 113  *       not support anyways). Default definitions have been given.
 114  *
 115  *   11) The criteria for defining (u)int_fast(*)_t isn't something I
 116  *       would trust to any particular compiler vendor or the ANSI C
 117  *       comittee.  It is well known that "compatible systems" are
 118  *       commonly created that have very different performance
 119  *       characteristics from the systems they are compatible with,
 120  *       especially those whose vendors make both the compiler and the
 121  *       system.  Default definitions have been given, but its strongly
 122  *       recommended that users never use these definitions for any
 123  *       reason (they do *NOT* deliver any serious guarantee of
 124  *       improved performance -- not in this file, nor any vendor's
 125  *       stdint.h).
 126  *
 127  *   12) The following macros:
 128  *
 129  *       PRINTF_INTMAX_MODIFIER
 130  *       PRINTF_INT64_MODIFIER
 131  *       PRINTF_INT32_MODIFIER
 132  *       PRINTF_INT16_MODIFIER
 133  *       PRINTF_LEAST64_MODIFIER
 134  *       PRINTF_LEAST32_MODIFIER
 135  *       PRINTF_LEAST16_MODIFIER
 136  *       PRINTF_INTPTR_MODIFIER
 137  *
 138  *       are strings which have been defined as the modifiers required
 139  *       for the "d", "u" and "x" printf formats to correctly output
 140  *       (u)intmax_t, (u)int64_t, (u)int32_t, (u)int16_t, (u)least64_t,
 141  *       (u)least32_t, (u)least16_t and (u)intptr_t types respectively.
 142  *       PRINTF_INTPTR_MODIFIER is not defined for some systems which
 143  *       provide their own stdint.h.  PRINTF_INT64_MODIFIER is not
 144  *       defined if INT64_MAX is not defined.  These are an extension
 145  *       beyond what C99 specifies must be in stdint.h.
 146  *
 147  *       In addition, the following macros are defined:
 148  *
 149  *       PRINTF_INTMAX_HEX_WIDTH
 150  *       PRINTF_INT64_HEX_WIDTH
 151  *       PRINTF_INT32_HEX_WIDTH
 152  *       PRINTF_INT16_HEX_WIDTH
 153  *       PRINTF_INT8_HEX_WIDTH
 154  *       PRINTF_INTMAX_DEC_WIDTH
 155  *       PRINTF_INT64_DEC_WIDTH
 156  *       PRINTF_INT32_DEC_WIDTH
 157  *       PRINTF_INT16_DEC_WIDTH
 158  *       PRINTF_INT8_DEC_WIDTH
 159  *
 160  *       Which specifies the maximum number of characters required to
 161  *       print the number of that type in either hexadecimal or decimal.
 162  *       These are an extension beyond what C99 specifies must be in
 163  *       stdint.h.
 164  *
 165  *  Compilers tested (all with 0 warnings at their highest respective
 166  *  settings): Borland Turbo C 2.0, WATCOM C/C++ 11.0 (16 bits and 32
 167  *  bits), Microsoft Visual C++ 6.0 (32 bit), Microsoft Visual Studio
 168  *  .net (VC7), Intel C++ 4.0, GNU gcc v3.3.3
 169  *
 170  *  This file should be considered a work in progress.  Suggestions for
 171  *  improvements, especially those which increase coverage are strongly
 172  *  encouraged.
 173  *
 174  *  Acknowledgements
 175  *
 176  *  The following people have made significant contributions to the
 177  *  development and testing of this file:
 178  *
 179  *  Chris Howie
 180  *  John Steele Scott
 181  *
 182  */
 183
 184 #include <stddef.h>
 185 #include <limits.h>
 186 #include <signal.h>
 187
 188 /*
 189  *  For gcc with _STDINT_H, fill in the PRINTF_INT*_MODIFIER macros, and
 190  *  do nothing else.
 191  */
 192
 193 #if ((defined(__STDC__) && __STDC__ && __STDC_VERSION__ >= 199901L) || (defined(__GNUC__) && defined(_STDINT_H))) && !defined (_PSTDINT_H_INCLUDED)
 194 #include <stdint.h>
 195 #define _PSTDINT_H_INCLUDED
 196 # ifndef PRINTF_INT64_MODIFIER
 197 #  define PRINTF_INT64_MODIFIER "ll"
 198 # endif
 199 # ifndef PRINTF_INT32_MODIFIER
 200 #  define PRINTF_INT32_MODIFIER "l"
 201 # endif
 202 # ifndef PRINTF_INT16_MODIFIER
 203 #  define PRINTF_INT16_MODIFIER "h"
 204 # endif
 205 # ifndef PRINTF_INTMAX_MODIFIER
 206 #  define PRINTF_INTMAX_MODIFIER PRINTF_INT64_MODIFIER
 207 # endif
 208 # ifndef PRINTF_INT64_HEX_WIDTH
 209 #  define PRINTF_INT64_HEX_WIDTH "16"
 210 # endif
 211 # ifndef PRINTF_INT32_HEX_WIDTH
 212 #  define PRINTF_INT32_HEX_WIDTH "8"
 213 # endif
 214 # ifndef PRINTF_INT16_HEX_WIDTH
 215 #  define PRINTF_INT16_HEX_WIDTH "4"
 216 # endif
 217 # ifndef PRINTF_INT8_HEX_WIDTH
 218 #  define PRINTF_INT8_HEX_WIDTH "2"
 219 # endif
 220 # ifndef PRINTF_INT64_DEC_WIDTH
 221 #  define PRINTF_INT64_DEC_WIDTH "20"
 222 # endif
 223 # ifndef PRINTF_INT32_DEC_WIDTH
 224 #  define PRINTF_INT32_DEC_WIDTH "10"
 225 # endif
 226 # ifndef PRINTF_INT16_DEC_WIDTH
 227 #  define PRINTF_INT16_DEC_WIDTH "5"
 228 # endif
 229 # ifndef PRINTF_INT8_DEC_WIDTH
 230 #  define PRINTF_INT8_DEC_WIDTH "3"
 231 # endif
 232 # ifndef PRINTF_INTMAX_HEX_WIDTH
 233 #  define PRINTF_INTMAX_HEX_WIDTH PRINTF_INT64_HEX_WIDTH
 234 # endif
 235 # ifndef PRINTF_INTMAX_DEC_WIDTH
 236 #  define PRINTF_INTMAX_DEC_WIDTH PRINTF_INT64_DEC_WIDTH
 237 # endif
 238 #endif
 239
 240 #ifndef _PSTDINT_H_INCLUDED
 241 #define _PSTDINT_H_INCLUDED
 242
 243 #ifndef SIZE_MAX
 244 # define SIZE_MAX (~(size_t)0)
 245 #endif
 246
 247 /*
 248  *  Deduce the type assignments from limits.h under the assumption that
 249  *  integer sizes in bits are powers of 2, and follow the ANSI
 250  *  definitions.
 251  */
 252
 253 #ifndef UINT8_MAX
 254 # define UINT8_MAX 0xff
 255 #endif
 256 #ifndef uint8_t
 257 # if (UCHAR_MAX == UINT8_MAX) || defined (S_SPLINT_S)
 258     typedef unsigned char uint8_t;
 259 #   define UINT8_C(v) ((uint8_t) v)
 260 # else
 261 #   error "Platform not supported"
 262 # endif
 263 #endif
 264
 265 #ifndef INT8_MAX
 266 # define INT8_MAX 0x7f
 267 #endif
 268 #ifndef INT8_MIN
 269 # define INT8_MIN INT8_C(0x80)
 270 #endif
 271 #ifndef int8_t
 272 # if (SCHAR_MAX == INT8_MAX) || defined (S_SPLINT_S)
 273     typedef signed char int8_t;
 274 #   define INT8_C(v) ((int8_t) v)
 275 # else
 276 #   error "Platform not supported"
 277 # endif
 278 #endif
 279
 280 #ifndef UINT16_MAX
 281 # define UINT16_MAX 0xffff
 282 #endif
 283 #ifndef uint16_t
 284 #if (UINT_MAX == UINT16_MAX) || defined (S_SPLINT_S)
 285   typedef unsigned int uint16_t;
 286 # ifndef PRINTF_INT16_MODIFIER
 287 #  define PRINTF_INT16_MODIFIER ""
 288 # endif
 289 # define UINT16_C(v) ((uint16_t) (v))
 290 #elif (USHRT_MAX == UINT16_MAX)
 291   typedef unsigned short uint16_t;
 292 # define UINT16_C(v) ((uint16_t) (v))
 293 # ifndef PRINTF_INT16_MODIFIER
 294 #  define PRINTF_INT16_MODIFIER "h"
 295 # endif
 296 #else
 297 #error "Platform not supported"
 298 #endif
 299 #endif
 300
 301 #ifndef INT16_MAX
 302 # define INT16_MAX 0x7fff
 303 #endif
 304 #ifndef INT16_MIN
 305 # define INT16_MIN INT16_C(0x8000)
 306 #endif
 307 #ifndef int16_t
 308 #if (INT_MAX == INT16_MAX) || defined (S_SPLINT_S)
 309   typedef signed int int16_t;
 310 # define INT16_C(v) ((int16_t) (v))
 311 # ifndef PRINTF_INT16_MODIFIER
 312 #  define PRINTF_INT16_MODIFIER ""
 313 # endif
 314 #elif (SHRT_MAX == INT16_MAX)
 315   typedef signed short int16_t;
 316 # define INT16_C(v) ((int16_t) (v))
 317 # ifndef PRINTF_INT16_MODIFIER
 318 #  define PRINTF_INT16_MODIFIER "h"
 319 # endif
 320 #else
 321 #error "Platform not supported"
 322 #endif
 323 #endif
 324
 325 #ifndef UINT32_MAX
 326 # define UINT32_MAX (0xffffffffUL)
 327 #endif
 328 #ifndef uint32_t
 329 #if (ULONG_MAX == UINT32_MAX) || defined (S_SPLINT_S)
 330   typedef unsigned long uint32_t;
 331 # define UINT32_C(v) v ## UL
 332 # ifndef PRINTF_INT32_MODIFIER
 333 #  define PRINTF_INT32_MODIFIER "l"
 334 # endif
 335 #elif (UINT_MAX == UINT32_MAX)
 336   typedef unsigned int uint32_t;
 337 # ifndef PRINTF_INT32_MODIFIER
 338 #  define PRINTF_INT32_MODIFIER ""
 339 # endif
 340 # define UINT32_C(v) v ## U
 341 #elif (USHRT_MAX == UINT32_MAX)
 342   typedef unsigned short uint32_t;
 343 # define UINT32_C(v) ((unsigned short) (v))
 344 # ifndef PRINTF_INT32_MODIFIER
 345 #  define PRINTF_INT32_MODIFIER ""
 346 # endif
 347 #else
 348 #error "Platform not supported"
 349 #endif
 350 #endif
 351
 352 #ifndef INT32_MAX
 353 # define INT32_MAX (0x7fffffffL)
 354 #endif
 355 #ifndef INT32_MIN
 356 # define INT32_MIN INT32_C(0x80000000)
 357 #endif
 358 #ifndef int32_t
 359 #if (LONG_MAX == INT32_MAX) || defined (S_SPLINT_S)
 360   typedef signed long int32_t;
 361 # define INT32_C(v) v ## L
 362 # ifndef PRINTF_INT32_MODIFIER
 363 #  define PRINTF_INT32_MODIFIER "l"
 364 # endif
 365 #elif (INT_MAX == INT32_MAX)
 366   typedef signed int int32_t;
 367 # define INT32_C(v) v
 368 # ifndef PRINTF_INT32_MODIFIER
 369 #  define PRINTF_INT32_MODIFIER ""
 370 # endif
 371 #elif (SHRT_MAX == INT32_MAX)
 372   typedef signed short int32_t;
 373 # define INT32_C(v) ((short) (v))
 374 # ifndef PRINTF_INT32_MODIFIER
 375 #  define PRINTF_INT32_MODIFIER ""
 376 # endif
 377 #else
 378 #error "Platform not supported"
 379 #endif
 380 #endif
 381
 382 /*
 383  *  The macro stdint_int64_defined is temporarily used to record
 384  *  whether or not 64 integer support is available.  It must be
 385  *  defined for any 64 integer extensions for new platforms that are
 386  *  added.
 387  */
 388
 389 #undef stdint_int64_defined
 390 #if (defined(__STDC__) && defined(__STDC_VERSION__)) || defined (S_SPLINT_S)
 391 # if (__STDC__ && __STDC_VERSION >= 199901L) || defined (S_SPLINT_S)
 392 #  define stdint_int64_defined
 393    typedef long long int64_t;
 394    typedef unsigned long long uint64_t;
 395 #  define UINT64_C(v) v ## ULL
 396 #  define  INT64_C(v) v ## LL
 397 #  ifndef PRINTF_INT64_MODIFIER
 398 #   define PRINTF_INT64_MODIFIER "ll"
 399 #  endif
 400 # endif
 401 #endif
 402
 403 #if !defined (stdint_int64_defined)
 404 # if defined(__GNUC__)
 405 #  define stdint_int64_defined
 406    __extension__ typedef long long int64_t;
 407    __extension__ typedef unsigned long long uint64_t;
 408 #  define UINT64_C(v) v ## ULL
 409 #  define  INT64_C(v) v ## LL
 410 #  ifndef PRINTF_INT64_MODIFIER
 411 #   define PRINTF_INT64_MODIFIER "ll"
 412 #  endif
 413 # elif defined(__MWERKS__) || defined (__SUNPRO_C) || defined (__SUNPRO_CC) || defined (__APPLE_CC__) || defined (_LONG_LONG) || defined (_CRAYC) || defined (S_SPLINT_S)
 414 #  define stdint_int64_defined
 415    typedef long long int64_t;
 416    typedef unsigned long long uint64_t;
 417 #  define UINT64_C(v) v ## ULL
 418 #  define  INT64_C(v) v ## LL
 419 #  ifndef PRINTF_INT64_MODIFIER
 420 #   define PRINTF_INT64_MODIFIER "ll"
 421 #  endif
 422 # elif (defined(__WATCOMC__) && defined(__WATCOM_INT64__)) || (defined(_MSC_VER) && _INTEGRAL_MAX_BITS >= 64) || (defined (__BORLANDC__) && __BORLANDC__ > 0x460) || defined (__alpha) || defined (__DECC)
 423 #  define stdint_int64_defined
 424    typedef __int64 int64_t;
 425    typedef unsigned __int64 uint64_t;
 426 #  define UINT64_C(v) v ## UI64
 427 #  define  INT64_C(v) v ## I64
 428 #  ifndef PRINTF_INT64_MODIFIER
 429 #   define PRINTF_INT64_MODIFIER "I64"
 430 #  endif
 431 # endif
 432 #endif
 433
 434 #if !defined (LONG_LONG_MAX) && defined (INT64_C)
 435 # define LONG_LONG_MAX INT64_C (9223372036854775807)
 436 #endif
 437 #ifndef ULONG_LONG_MAX
 438 # define ULONG_LONG_MAX UINT64_C (18446744073709551615)
 439 #endif
 440
 441 #if !defined (INT64_MAX) && defined (INT64_C)
 442 # define INT64_MAX INT64_C (9223372036854775807)
 443 #endif
 444 #if !defined (INT64_MIN) && defined (INT64_C)
 445 # define INT64_MIN INT64_C (-9223372036854775808)
 446 #endif
 447 #if !defined (UINT64_MAX) && defined (INT64_C)
 448 # define UINT64_MAX UINT64_C (18446744073709551615)
 449 #endif
 450
 451 /*
 452  *  Width of hexadecimal for number field.
 453  */
 454
 455 #ifndef PRINTF_INT64_HEX_WIDTH
 456 # define PRINTF_INT64_HEX_WIDTH "16"
 457 #endif
 458 #ifndef PRINTF_INT32_HEX_WIDTH
 459 # define PRINTF_INT32_HEX_WIDTH "8"
 460 #endif
 461 #ifndef PRINTF_INT16_HEX_WIDTH
 462 # define PRINTF_INT16_HEX_WIDTH "4"
 463 #endif
 464 #ifndef PRINTF_INT8_HEX_WIDTH
 465 # define PRINTF_INT8_HEX_WIDTH "2"
 466 #endif
 467
 468 #ifndef PRINTF_INT64_DEC_WIDTH
 469 # define PRINTF_INT64_DEC_WIDTH "20"
 470 #endif
 471 #ifndef PRINTF_INT32_DEC_WIDTH
 472 # define PRINTF_INT32_DEC_WIDTH "10"
 473 #endif
 474 #ifndef PRINTF_INT16_DEC_WIDTH
 475 # define PRINTF_INT16_DEC_WIDTH "5"
 476 #endif
 477 #ifndef PRINTF_INT8_DEC_WIDTH
 478 # define PRINTF_INT8_DEC_WIDTH "3"
 479 #endif
 480
 481 /*
 482  *  Ok, lets not worry about 128 bit integers for now.  Moore's law says
 483  *  we don't need to worry about that until about 2040 at which point
 484  *  we'll have bigger things to worry about.
 485  */
 486
 487 #ifdef stdint_int64_defined
 488   typedef int64_t intmax_t;
 489   typedef uint64_t uintmax_t;
 490 # define  INTMAX_MAX   INT64_MAX
 491 # define  INTMAX_MIN   INT64_MIN
 492 # define UINTMAX_MAX  UINT64_MAX
 493 # define UINTMAX_C(v) UINT64_C(v)
 494 # define  INTMAX_C(v)  INT64_C(v)
 495 # ifndef PRINTF_INTMAX_MODIFIER
 496 #   define PRINTF_INTMAX_MODIFIER PRINTF_INT64_MODIFIER
 497 # endif
 498 # ifndef PRINTF_INTMAX_HEX_WIDTH
 499 #  define PRINTF_INTMAX_HEX_WIDTH PRINTF_INT64_HEX_WIDTH
 500 # endif
 501 # ifndef PRINTF_INTMAX_DEC_WIDTH
 502 #  define PRINTF_INTMAX_DEC_WIDTH PRINTF_INT64_DEC_WIDTH
 503 # endif
 504 #else
 505   typedef int32_t intmax_t;
 506   typedef uint32_t uintmax_t;
 507 # define  INTMAX_MAX   INT32_MAX
 508 # define UINTMAX_MAX  UINT32_MAX
 509 # define UINTMAX_C(v) UINT32_C(v)
 510 # define  INTMAX_C(v)  INT32_C(v)
 511 # ifndef PRINTF_INTMAX_MODIFIER
 512 #   define PRINTF_INTMAX_MODIFIER PRINTF_INT32_MODIFIER
 513 # endif
 514 # ifndef PRINTF_INTMAX_HEX_WIDTH
 515 #  define PRINTF_INTMAX_HEX_WIDTH PRINTF_INT32_HEX_WIDTH
 516 # endif
 517 # ifndef PRINTF_INTMAX_DEC_WIDTH
 518 #  define PRINTF_INTMAX_DEC_WIDTH PRINTF_INT32_DEC_WIDTH
 519 # endif
 520 #endif
 521
 522 /*
 523  *  Because this file currently only supports platforms which have
 524  *  precise powers of 2 as bit sizes for the default integers, the
 525  *  least definitions are all trivial.  Its possible that a future
 526  *  version of this file could have different definitions.
 527  */
 528
 529 #ifndef stdint_least_defined
 530   typedef   int8_t   int_least8_t;
 531   typedef  uint8_t  uint_least8_t;
 532   typedef  int16_t  int_least16_t;
 533   typedef uint16_t uint_least16_t;
 534   typedef  int32_t  int_least32_t;
 535   typedef uint32_t uint_least32_t;
 536 # define PRINTF_LEAST32_MODIFIER PRINTF_INT32_MODIFIER
 537 # define PRINTF_LEAST16_MODIFIER PRINTF_INT16_MODIFIER
 538 # define  UINT_LEAST8_MAX  UINT8_MAX
 539 # define   INT_LEAST8_MAX   INT8_MAX
 540 # define UINT_LEAST16_MAX UINT16_MAX
 541 # define  INT_LEAST16_MAX  INT16_MAX
 542 # define UINT_LEAST32_MAX UINT32_MAX
 543 # define  INT_LEAST32_MAX  INT32_MAX
 544 # define   INT_LEAST8_MIN   INT8_MIN
 545 # define  INT_LEAST16_MIN  INT16_MIN
 546 # define  INT_LEAST32_MIN  INT32_MIN
 547 # ifdef stdint_int64_defined
 548     typedef  int64_t  int_least64_t;
 549     typedef uint64_t uint_least64_t;
 550 #   define PRINTF_LEAST64_MODIFIER PRINTF_INT64_MODIFIER
 551 #   define UINT_LEAST64_MAX UINT64_MAX
 552 #   define  INT_LEAST64_MAX  INT64_MAX
 553 #   define  INT_LEAST64_MIN  INT64_MIN
 554 # endif
 555 #endif
 556 #undef stdint_least_defined
 557
 558 /*
 559  *  The ANSI C committee pretending to know or specify anything about
 560  *  performance is the epitome of misguided arrogance.  The mandate of
 561  *  this file is to *ONLY* ever support that absolute minimum
 562  *  definition of the fast integer types, for compatibility purposes.
 563  *  No extensions, and no attempt to suggest what may or may not be a
 564  *  faster integer type will ever be made in this file.  Developers are
 565  *  warned to stay away from these types when using this or any other
 566  *  stdint.h.
 567  */
 568
 569 typedef   int_least8_t   int_fast8_t;
 570 typedef  uint_least8_t  uint_fast8_t;
 571 typedef  int_least16_t  int_fast16_t;
 572 typedef uint_least16_t uint_fast16_t;
 573 typedef  int_least32_t  int_fast32_t;
 574 typedef uint_least32_t uint_fast32_t;
 575 #define  UINT_FAST8_MAX  UINT_LEAST8_MAX
 576 #define   INT_FAST8_MAX   INT_LEAST8_MAX
 577 #define UINT_FAST16_MAX UINT_LEAST16_MAX
 578 #define  INT_FAST16_MAX  INT_LEAST16_MAX
 579 #define UINT_FAST32_MAX UINT_LEAST32_MAX
 580 #define  INT_FAST32_MAX  INT_LEAST32_MAX
 581 #define   INT_FAST8_MIN   IN_LEASTT8_MIN
 582 #define  INT_FAST16_MIN  INT_LEAST16_MIN
 583 #define  INT_FAST32_MIN  INT_LEAST32_MIN
 584 #ifdef stdint_int64_defined
 585   typedef  int_least64_t  int_fast64_t;
 586   typedef uint_least64_t uint_fast64_t;
 587 # define UINT_FAST64_MAX UINT_LEAST64_MAX
 588 # define  INT_FAST64_MAX  INT_LEAST64_MAX
 589 # define  INT_FAST64_MIN  INT_LEAST64_MIN
 590 #endif
 591
 592 #undef stdint_int64_defined
 593
 594 /*
 595  *  Whatever piecemeal, per compiler thing we can do about the wchar_t
 596  *  type limits.
 597  */
 598
 599 #if defined(__WATCOMC__) || defined(_MSC_VER) || defined (__GNUC__)
 600 # include <wchar.h>
 601 # ifndef WCHAR_MIN
 602 #  define WCHAR_MIN 0
 603 # endif
 604 # ifndef WCHAR_MAX
 605 #  define WCHAR_MAX ((wchar_t)-1)
 606 # endif
 607 #endif
 608
 609 /*
 610  *  Whatever piecemeal, per compiler/platform thing we can do about the
 611  *  (u)intptr_t types and limits.
 612  */
 613
 614 #if defined (_MSC_VER) && defined (_UINTPTR_T_DEFINED)
 615 # define STDINT_H_UINTPTR_T_DEFINED
 616 #endif
 617
 618 #ifndef STDINT_H_UINTPTR_T_DEFINED
 619 # if defined (__alpha__) || defined (__ia64__) || defined (__x86_64__) || defined (_WIN64)
 620 #  define stdint_intptr_bits 64
 621 # elif defined (__WATCOMC__) || defined (__TURBOC__)
 622 #  if defined(__TINY__) || defined(__SMALL__) || defined(__MEDIUM__)
 623 #    define stdint_intptr_bits 16
 624 #  else
 625 #    define stdint_intptr_bits 32
 626 #  endif
 627 # elif defined (__i386__) || defined (_WIN32) || defined (WIN32)
 628 #  define stdint_intptr_bits 32
 629 # elif defined (__INTEL_COMPILER)
 630 /* TODO -- what will Intel do about x86-64? */
 631 # endif
 632
 633 # ifdef stdint_intptr_bits
 634 #  define stdint_intptr_glue3_i(a,b,c)  a##b##c
 635 #  define stdint_intptr_glue3(a,b,c)    stdint_intptr_glue3_i(a,b,c)
 636 #  ifndef PRINTF_INTPTR_MODIFIER
 637 #    define PRINTF_INTPTR_MODIFIER      stdint_intptr_glue3(PRINTF_INT,stdint_intptr_bits,_MODIFIER)
 638 #  endif
 639 #  ifndef PTRDIFF_MAX
 640 #    define PTRDIFF_MAX                 stdint_intptr_glue3(INT,stdint_intptr_bits,_MAX)
 641 #  endif
 642 #  ifndef PTRDIFF_MIN
 643 #    define PTRDIFF_MIN                 stdint_intptr_glue3(INT,stdint_intptr_bits,_MIN)
 644 #  endif
 645 #  ifndef UINTPTR_MAX
 646 #    define UINTPTR_MAX                 stdint_intptr_glue3(UINT,stdint_intptr_bits,_MAX)
 647 #  endif
 648 #  ifndef INTPTR_MAX
 649 #    define INTPTR_MAX                  stdint_intptr_glue3(INT,stdint_intptr_bits,_MAX)
 650 #  endif
 651 #  ifndef INTPTR_MIN
 652 #    define INTPTR_MIN                  stdint_intptr_glue3(INT,stdint_intptr_bits,_MIN)
 653 #  endif
 654 #  ifndef INTPTR_C
 655 #    define INTPTR_C(x)                 stdint_intptr_glue3(INT,stdint_intptr_bits,_C)(x)
 656 #  endif
 657 #  ifndef UINTPTR_C
 658 #    define UINTPTR_C(x)                stdint_intptr_glue3(UINT,stdint_intptr_bits,_C)(x)
 659 #  endif
 660   typedef stdint_intptr_glue3(uint,stdint_intptr_bits,_t) uintptr_t;
 661   typedef stdint_intptr_glue3( int,stdint_intptr_bits,_t)  intptr_t;
 662 # else
 663 /* TODO -- This following is likely wrong for some platforms, and does
 664    nothing for the definition of uintptr_t. */
 665   typedef ptrdiff_t intptr_t;
 666 # endif
 667 # define STDINT_H_UINTPTR_T_DEFINED
 668 #endif
 669
 670 /*
 671  *  Assumes sig_atomic_t is signed and we have a 2s complement machine.
 672  */
 673
 674 #ifndef SIG_ATOMIC_MAX
 675 # define SIG_ATOMIC_MAX ((((sig_atomic_t) 1) << (sizeof (sig_atomic_t)*CHAR_BIT-1)) - 1)
 676 #endif
 677
 678 #endif