src/gnulib/stdint.in.h

   1 /* Copyright (C) 2001-2002, 2004-2008 Free Software Foundation, Inc.
   2    Written by Paul Eggert, Bruno Haible, Sam Steingold, Peter Burwood.
   3    This file is part of gnulib.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU Lesser General Public License as published by
   7    the Free Software Foundation; either version 2, or (at your option)
   8    any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public License
  16    along with this program; if not, write to the Free Software Foundation,
  17    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  18
  19 /*
  20  * ISO C 99 <stdint.h> for platforms that lack it.
  21  * <http://www.opengroup.org/susv3xbd/stdint.h.html>
  22  */
  23
  24 #ifndef _GL_STDINT_H
  25
  26 /* When including a system file that in turn includes <inttypes.h>,
  27    use the system <inttypes.h>, not our substitute.  This avoids
  28    problems with (for example) VMS, whose <sys/bitypes.h> includes
  29    <inttypes.h>.  */
  30 #define _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H
  31
  32 /* Get those types that are already defined in other system include
  33    files, so that we can "#define int8_t signed char" below without
  34    worrying about a later system include file containing a "typedef
  35    signed char int8_t;" that will get messed up by our macro.  Our
  36    macros should all be consistent with the system versions, except
  37    for the "fast" types and macros, which we recommend against using
  38    in public interfaces due to compiler differences.  */
  39
  40 #if @HAVE_STDINT_H@
  41 # if defined __sgi && ! defined __c99
  42    /* Bypass IRIX's <stdint.h> if in C89 mode, since it merely annoys users
  43       with "This header file is to be used only for c99 mode compilations"
  44       diagnostics.  */
  45 #  define __STDINT_H__
  46 # endif
  47   /* Other systems may have an incomplete or buggy <stdint.h>.
  48      Include it before <inttypes.h>, since any "#include <stdint.h>"
  49      in <inttypes.h> would reinclude us, skipping our contents because
  50      _GL_STDINT_H is defined.
  51      The include_next requires a split double-inclusion guard.  */
  52 # if __GNUC__ >= 3
  53 @PRAGMA_SYSTEM_HEADER@
  54 # endif
  55 # @INCLUDE_NEXT@ @NEXT_STDINT_H@
  56 #endif
  57
  58 #if ! defined _GL_STDINT_H && ! defined _GL_JUST_INCLUDE_SYSTEM_STDINT_H
  59 #define _GL_STDINT_H
  60
  61 /* <sys/types.h> defines some of the stdint.h types as well, on glibc,
  62    IRIX 6.5, and OpenBSD 3.8 (via <machine/types.h>).
  63    AIX 5.2 <sys/types.h> isn't needed and causes troubles.
  64    MacOS X 10.4.6 <sys/types.h> includes <stdint.h> (which is us), but
  65    relies on the system <stdint.h> definitions, so include
  66    <sys/types.h> after @NEXT_STDINT_H@.  */
  67 #if @HAVE_SYS_TYPES_H@ && ! defined _AIX
  68 # include <sys/types.h>
  69 #endif
  70
  71 /* Get LONG_MIN, LONG_MAX, ULONG_MAX.  */
  72 #include <limits.h>
  73
  74 #if @HAVE_INTTYPES_H@
  75   /* In OpenBSD 3.8, <inttypes.h> includes <machine/types.h>, which defines
  76      int{8,16,32,64}_t, uint{8,16,32,64}_t and __BIT_TYPES_DEFINED__.
  77      <inttypes.h> also defines intptr_t and uintptr_t.  */
  78 # include <inttypes.h>
  79 #elif @HAVE_SYS_INTTYPES_H@
  80   /* Solaris 7 <sys/inttypes.h> has the types except the *_fast*_t types, and
  81      the macros except for *_FAST*_*, INTPTR_MIN, PTRDIFF_MIN, PTRDIFF_MAX.  */
  82 # include <sys/inttypes.h>
  83 #endif
  84
  85 #if @HAVE_SYS_BITYPES_H@ && ! defined __BIT_TYPES_DEFINED__
  86   /* Linux libc4 >= 4.6.7 and libc5 have a <sys/bitypes.h> that defines
  87      int{8,16,32,64}_t and __BIT_TYPES_DEFINED__.  In libc5 >= 5.2.2 it is
  88      included by <sys/types.h>.  */
  89 # include <sys/bitypes.h>
  90 #endif
  91
  92 #if ! defined __cplusplus || defined __STDC_CONSTANT_MACROS
  93
  94 /* Get WCHAR_MIN, WCHAR_MAX.  */
  95 # if ! (defined WCHAR_MIN && defined WCHAR_MAX)
  96 #  include <wchar.h>
  97 # endif
  98
  99 #endif
 100
 101 #undef _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H
 102
 103 /* Minimum and maximum values for a integer type under the usual assumption.
 104    Return an unspecified value if BITS == 0, adding a check to pacify
 105    picky compilers.  */
 106
 107 #define _STDINT_MIN(signed, bits, zero) \
 108   ((signed) ? (- ((zero) + 1) << ((bits) ? (bits) - 1 : 0)) : (zero))
 109
 110 #define _STDINT_MAX(signed, bits, zero) \
 111   ((signed) \
 112    ? ~ _STDINT_MIN (signed, bits, zero) \
 113    : /* The expression for the unsigned case.  The subtraction of (signed) \
 114         is a nop in the unsigned case and avoids "signed integer overflow" \
 115         warnings in the signed case.  */ \
 116      ((((zero) + 1) << ((bits) ? (bits) - 1 - (signed) : 0)) - 1) * 2 + 1)
 117
 118 /* 7.18.1.1. Exact-width integer types */
 119
 120 /* Here we assume a standard architecture where the hardware integer
 121    types have 8, 16, 32, optionally 64 bits.  */
 122
 123 #undef int8_t
 124 #undef uint8_t
 125 typedef signed char gl_int8_t;
 126 typedef unsigned char gl_uint8_t;
 127 #define int8_t gl_int8_t
 128 #define uint8_t gl_uint8_t
 129
 130 #undef int16_t
 131 #undef uint16_t
 132 typedef short int gl_int16_t;
 133 typedef unsigned short int gl_uint16_t;
 134 #define int16_t gl_int16_t
 135 #define uint16_t gl_uint16_t
 136
 137 #undef int32_t
 138 #undef uint32_t
 139 typedef int gl_int32_t;
 140 typedef unsigned int gl_uint32_t;
 141 #define int32_t gl_int32_t
 142 #define uint32_t gl_uint32_t
 143
 144 /* Do not undefine int64_t if gnulib is not being used with 64-bit
 145    types, since otherwise it breaks platforms like Tandem/NSK.  */
 146 #if LONG_MAX >> 31 >> 31 == 1
 147 # undef int64_t
 148 typedef long int gl_int64_t;
 149 # define int64_t gl_int64_t
 150 # define GL_INT64_T
 151 #elif defined _MSC_VER
 152 # undef int64_t
 153 typedef __int64 gl_int64_t;
 154 # define int64_t gl_int64_t
 155 # define GL_INT64_T
 156 #elif @HAVE_LONG_LONG_INT@
 157 # undef int64_t
 158 typedef long long int gl_int64_t;
 159 # define int64_t gl_int64_t
 160 # define GL_INT64_T
 161 #endif
 162
 163 #if ULONG_MAX >> 31 >> 31 >> 1 == 1
 164 # undef uint64_t
 165 typedef unsigned long int gl_uint64_t;
 166 # define uint64_t gl_uint64_t
 167 # define GL_UINT64_T
 168 #elif defined _MSC_VER
 169 # undef uint64_t
 170 typedef unsigned __int64 gl_uint64_t;
 171 # define uint64_t gl_uint64_t
 172 # define GL_UINT64_T
 173 #elif @HAVE_UNSIGNED_LONG_LONG_INT@
 174 # undef uint64_t
 175 typedef unsigned long long int gl_uint64_t;
 176 # define uint64_t gl_uint64_t
 177 # define GL_UINT64_T
 178 #endif
 179
 180 /* Avoid collision with Solaris 2.5.1 <pthread.h> etc.  */
 181 #define _UINT8_T
 182 #define _UINT32_T
 183 #define _UINT64_T
 184
 185
 186 /* 7.18.1.2. Minimum-width integer types */
 187
 188 /* Here we assume a standard architecture where the hardware integer
 189    types have 8, 16, 32, optionally 64 bits. Therefore the leastN_t types
 190    are the same as the corresponding N_t types.  */
 191
 192 #undef int_least8_t
 193 #undef uint_least8_t
 194 #undef int_least16_t
 195 #undef uint_least16_t
 196 #undef int_least32_t
 197 #undef uint_least32_t
 198 #undef int_least64_t
 199 #undef uint_least64_t
 200 #define int_least8_t int8_t
 201 #define uint_least8_t uint8_t
 202 #define int_least16_t int16_t
 203 #define uint_least16_t uint16_t
 204 #define int_least32_t int32_t
 205 #define uint_least32_t uint32_t
 206 #ifdef GL_INT64_T
 207 # define int_least64_t int64_t
 208 #endif
 209 #ifdef GL_UINT64_T
 210 # define uint_least64_t uint64_t
 211 #endif
 212
 213 /* 7.18.1.3. Fastest minimum-width integer types */
 214
 215 /* Note: Other <stdint.h> substitutes may define these types differently.
 216    It is not recommended to use these types in public header files. */
 217
 218 /* Here we assume a standard architecture where the hardware integer
 219    types have 8, 16, 32, optionally 64 bits. Therefore the fastN_t types
 220    are taken from the same list of types.  Assume that 'long int'
 221    is fast enough for all narrower integers.  */
 222
 223 #undef int_fast8_t
 224 #undef uint_fast8_t
 225 #undef int_fast16_t
 226 #undef uint_fast16_t
 227 #undef int_fast32_t
 228 #undef uint_fast32_t
 229 #undef int_fast64_t
 230 #undef uint_fast64_t
 231 typedef long int gl_int_fast8_t;
 232 typedef unsigned long int gl_uint_fast8_t;
 233 typedef long int gl_int_fast16_t;
 234 typedef unsigned long int gl_uint_fast16_t;
 235 typedef long int gl_int_fast32_t;
 236 typedef unsigned long int gl_uint_fast32_t;
 237 #define int_fast8_t gl_int_fast8_t
 238 #define uint_fast8_t gl_uint_fast8_t
 239 #define int_fast16_t gl_int_fast16_t
 240 #define uint_fast16_t gl_uint_fast16_t
 241 #define int_fast32_t gl_int_fast32_t
 242 #define uint_fast32_t gl_uint_fast32_t
 243 #ifdef GL_INT64_T
 244 # define int_fast64_t int64_t
 245 #endif
 246 #ifdef GL_UINT64_T
 247 # define uint_fast64_t uint64_t
 248 #endif
 249
 250 /* 7.18.1.4. Integer types capable of holding object pointers */
 251
 252 #undef intptr_t
 253 #undef uintptr_t
 254 typedef long int gl_intptr_t;
 255 typedef unsigned long int gl_uintptr_t;
 256 #define intptr_t gl_intptr_t
 257 #define uintptr_t gl_uintptr_t
 258
 259 /* 7.18.1.5. Greatest-width integer types */
 260
 261 /* Note: These types are compiler dependent. It may be unwise to use them in
 262    public header files. */
 263
 264 #undef intmax_t
 265 #if @HAVE_LONG_LONG_INT@ && LONG_MAX >> 30 == 1
 266 typedef long long int gl_intmax_t;
 267 # define intmax_t gl_intmax_t
 268 #elif defined GL_INT64_T
 269 # define intmax_t int64_t
 270 #else
 271 typedef long int gl_intmax_t;
 272 # define intmax_t gl_intmax_t
 273 #endif
 274
 275 #undef uintmax_t
 276 #if @HAVE_UNSIGNED_LONG_LONG_INT@ && ULONG_MAX >> 31 == 1
 277 typedef unsigned long long int gl_uintmax_t;
 278 # define uintmax_t gl_uintmax_t
 279 #elif defined GL_UINT64_T
 280 # define uintmax_t uint64_t
 281 #else
 282 typedef unsigned long int gl_uintmax_t;
 283 # define uintmax_t gl_uintmax_t
 284 #endif
 285
 286 /* Verify that intmax_t and uintmax_t have the same size.  Too much code
 287    breaks if this is not the case.  If this check fails, the reason is likely
 288    to be found in the autoconf macros.  */
 289 typedef int _verify_intmax_size[2 * (sizeof (intmax_t) == sizeof (uintmax_t)) - 1];
 290
 291 /* 7.18.2. Limits of specified-width integer types */
 292
 293 #if ! defined __cplusplus || defined __STDC_LIMIT_MACROS
 294
 295 /* 7.18.2.1. Limits of exact-width integer types */
 296
 297 /* Here we assume a standard architecture where the hardware integer
 298    types have 8, 16, 32, optionally 64 bits.  */
 299
 300 #undef INT8_MIN
 301 #undef INT8_MAX
 302 #undef UINT8_MAX
 303 #define INT8_MIN  (~ INT8_MAX)
 304 #define INT8_MAX  127
 305 #define UINT8_MAX  255
 306
 307 #undef INT16_MIN
 308 #undef INT16_MAX
 309 #undef UINT16_MAX
 310 #define INT16_MIN  (~ INT16_MAX)
 311 #define INT16_MAX  32767
 312 #define UINT16_MAX  65535
 313
 314 #undef INT32_MIN
 315 #undef INT32_MAX
 316 #undef UINT32_MAX
 317 #define INT32_MIN  (~ INT32_MAX)
 318 #define INT32_MAX  2147483647
 319 #define UINT32_MAX  4294967295U
 320
 321 #undef INT64_MIN
 322 #undef INT64_MAX
 323 #ifdef GL_INT64_T
 324 /* Prefer (- INTMAX_C (1) << 63) over (~ INT64_MAX) because SunPRO C 5.0
 325    evaluates the latter incorrectly in preprocessor expressions.  */
 326 # define INT64_MIN  (- INTMAX_C (1) << 63)
 327 # define INT64_MAX  INTMAX_C (9223372036854775807)
 328 #endif
 329
 330 #undef UINT64_MAX
 331 #ifdef GL_UINT64_T
 332 # define UINT64_MAX  UINTMAX_C (18446744073709551615)
 333 #endif
 334
 335 /* 7.18.2.2. Limits of minimum-width integer types */
 336
 337 /* Here we assume a standard architecture where the hardware integer
 338    types have 8, 16, 32, optionally 64 bits. Therefore the leastN_t types
 339    are the same as the corresponding N_t types.  */
 340
 341 #undef INT_LEAST8_MIN
 342 #undef INT_LEAST8_MAX
 343 #undef UINT_LEAST8_MAX
 344 #define INT_LEAST8_MIN  INT8_MIN
 345 #define INT_LEAST8_MAX  INT8_MAX
 346 #define UINT_LEAST8_MAX  UINT8_MAX
 347
 348 #undef INT_LEAST16_MIN
 349 #undef INT_LEAST16_MAX
 350 #undef UINT_LEAST16_MAX
 351 #define INT_LEAST16_MIN  INT16_MIN
 352 #define INT_LEAST16_MAX  INT16_MAX
 353 #define UINT_LEAST16_MAX  UINT16_MAX
 354
 355 #undef INT_LEAST32_MIN
 356 #undef INT_LEAST32_MAX
 357 #undef UINT_LEAST32_MAX
 358 #define INT_LEAST32_MIN  INT32_MIN
 359 #define INT_LEAST32_MAX  INT32_MAX
 360 #define UINT_LEAST32_MAX  UINT32_MAX
 361
 362 #undef INT_LEAST64_MIN
 363 #undef INT_LEAST64_MAX
 364 #ifdef GL_INT64_T
 365 # define INT_LEAST64_MIN  INT64_MIN
 366 # define INT_LEAST64_MAX  INT64_MAX
 367 #endif
 368
 369 #undef UINT_LEAST64_MAX
 370 #ifdef GL_UINT64_T
 371 # define UINT_LEAST64_MAX  UINT64_MAX
 372 #endif
 373
 374 /* 7.18.2.3. Limits of fastest minimum-width integer types */
 375
 376 /* Here we assume a standard architecture where the hardware integer
 377    types have 8, 16, 32, optionally 64 bits. Therefore the fastN_t types
 378    are taken from the same list of types.  */
 379
 380 #undef INT_FAST8_MIN
 381 #undef INT_FAST8_MAX
 382 #undef UINT_FAST8_MAX
 383 #define INT_FAST8_MIN  LONG_MIN
 384 #define INT_FAST8_MAX  LONG_MAX
 385 #define UINT_FAST8_MAX  ULONG_MAX
 386
 387 #undef INT_FAST16_MIN
 388 #undef INT_FAST16_MAX
 389 #undef UINT_FAST16_MAX
 390 #define INT_FAST16_MIN  LONG_MIN
 391 #define INT_FAST16_MAX  LONG_MAX
 392 #define UINT_FAST16_MAX  ULONG_MAX
 393
 394 #undef INT_FAST32_MIN
 395 #undef INT_FAST32_MAX
 396 #undef UINT_FAST32_MAX
 397 #define INT_FAST32_MIN  LONG_MIN
 398 #define INT_FAST32_MAX  LONG_MAX
 399 #define UINT_FAST32_MAX  ULONG_MAX
 400
 401 #undef INT_FAST64_MIN
 402 #undef INT_FAST64_MAX
 403 #ifdef GL_INT64_T
 404 # define INT_FAST64_MIN  INT64_MIN
 405 # define INT_FAST64_MAX  INT64_MAX
 406 #endif
 407
 408 #undef UINT_FAST64_MAX
 409 #ifdef GL_UINT64_T
 410 # define UINT_FAST64_MAX  UINT64_MAX
 411 #endif
 412
 413 /* 7.18.2.4. Limits of integer types capable of holding object pointers */
 414
 415 #undef INTPTR_MIN
 416 #undef INTPTR_MAX
 417 #undef UINTPTR_MAX
 418 #define INTPTR_MIN  LONG_MIN
 419 #define INTPTR_MAX  LONG_MAX
 420 #define UINTPTR_MAX  ULONG_MAX
 421
 422 /* 7.18.2.5. Limits of greatest-width integer types */
 423
 424 #undef INTMAX_MIN
 425 #undef INTMAX_MAX
 426 #ifdef INT64_MAX
 427 # define INTMAX_MIN  INT64_MIN
 428 # define INTMAX_MAX  INT64_MAX
 429 #else
 430 # define INTMAX_MIN  INT32_MIN
 431 # define INTMAX_MAX  INT32_MAX
 432 #endif
 433
 434 #undef UINTMAX_MAX
 435 #ifdef UINT64_MAX
 436 # define UINTMAX_MAX  UINT64_MAX
 437 #else
 438 # define UINTMAX_MAX  UINT32_MAX
 439 #endif
 440
 441 /* 7.18.3. Limits of other integer types */
 442
 443 /* ptrdiff_t limits */
 444 #undef PTRDIFF_MIN
 445 #undef PTRDIFF_MAX
 446 #define PTRDIFF_MIN  \
 447    _STDINT_MIN (1, @BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
 448 #define PTRDIFF_MAX  \
 449    _STDINT_MAX (1, @BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
 450
 451 /* sig_atomic_t limits */
 452 #undef SIG_ATOMIC_MIN
 453 #undef SIG_ATOMIC_MAX
 454 #define SIG_ATOMIC_MIN  \
 455    _STDINT_MIN (@HAVE_SIGNED_SIG_ATOMIC_T@, @BITSIZEOF_SIG_ATOMIC_T@, \
 456                 0@SIG_ATOMIC_T_SUFFIX@)
 457 #define SIG_ATOMIC_MAX  \
 458    _STDINT_MAX (@HAVE_SIGNED_SIG_ATOMIC_T@, @BITSIZEOF_SIG_ATOMIC_T@, \
 459                 0@SIG_ATOMIC_T_SUFFIX@)
 460
 461
 462 /* size_t limit */
 463 #undef SIZE_MAX
 464 #define SIZE_MAX  _STDINT_MAX (0, @BITSIZEOF_SIZE_T@, 0@SIZE_T_SUFFIX@)
 465
 466 /* wchar_t limits */
 467 #undef WCHAR_MIN
 468 #undef WCHAR_MAX
 469 #define WCHAR_MIN  \
 470    _STDINT_MIN (@HAVE_SIGNED_WCHAR_T@, @BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
 471 #define WCHAR_MAX  \
 472    _STDINT_MAX (@HAVE_SIGNED_WCHAR_T@, @BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
 473
 474 /* wint_t limits */
 475 #undef WINT_MIN
 476 #undef WINT_MAX
 477 #define WINT_MIN  \
 478    _STDINT_MIN (@HAVE_SIGNED_WINT_T@, @BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
 479 #define WINT_MAX  \
 480    _STDINT_MAX (@HAVE_SIGNED_WINT_T@, @BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
 481
 482 #endif /* !defined __cplusplus || defined __STDC_LIMIT_MACROS */
 483
 484 /* 7.18.4. Macros for integer constants */
 485
 486 #if ! defined __cplusplus || defined __STDC_CONSTANT_MACROS
 487
 488 /* 7.18.4.1. Macros for minimum-width integer constants */
 489 /* According to ISO C 99 Technical Corrigendum 1 */
 490
 491 /* Here we assume a standard architecture where the hardware integer
 492    types have 8, 16, 32, optionally 64 bits, and int is 32 bits.  */
 493
 494 #undef INT8_C
 495 #undef UINT8_C
 496 #define INT8_C(x) x
 497 #define UINT8_C(x) x
 498
 499 #undef INT16_C
 500 #undef UINT16_C
 501 #define INT16_C(x) x
 502 #define UINT16_C(x) x
 503
 504 #undef INT32_C
 505 #undef UINT32_C
 506 #define INT32_C(x) x
 507 #define UINT32_C(x) x ## U
 508
 509 #undef INT64_C
 510 #undef UINT64_C
 511 #if LONG_MAX >> 31 >> 31 == 1
 512 # define INT64_C(x) x##L
 513 #elif defined _MSC_VER
 514 # define INT64_C(x) x##i64
 515 #elif @HAVE_LONG_LONG_INT@
 516 # define INT64_C(x) x##LL
 517 #endif
 518 #if ULONG_MAX >> 31 >> 31 >> 1 == 1
 519 # define UINT64_C(x) x##UL
 520 #elif defined _MSC_VER
 521 # define UINT64_C(x) x##ui64
 522 #elif @HAVE_UNSIGNED_LONG_LONG_INT@
 523 # define UINT64_C(x) x##ULL
 524 #endif
 525
 526 /* 7.18.4.2. Macros for greatest-width integer constants */
 527
 528 #undef INTMAX_C
 529 #if @HAVE_LONG_LONG_INT@ && LONG_MAX >> 30 == 1
 530 # define INTMAX_C(x)   x##LL
 531 #elif defined GL_INT64_T
 532 # define INTMAX_C(x)   INT64_C(x)
 533 #else
 534 # define INTMAX_C(x)   x##L
 535 #endif
 536
 537 #undef UINTMAX_C
 538 #if @HAVE_UNSIGNED_LONG_LONG_INT@ && ULONG_MAX >> 31 == 1
 539 # define UINTMAX_C(x)  x##ULL
 540 #elif defined GL_UINT64_T
 541 # define UINTMAX_C(x)  UINT64_C(x)
 542 #else
 543 # define UINTMAX_C(x)  x##UL
 544 #endif
 545
 546 #endif /* !defined __cplusplus || defined __STDC_CONSTANT_MACROS */
 547
 548 #endif /* _GL_STDINT_H */
 549 #endif /* !defined _GL_STDINT_H && !defined _GL_JUST_INCLUDE_SYSTEM_STDINT_H */