lib/stdint.in.h

   1 /* Copyright (C) 2001-2002, 2004-2007 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 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 General Public License for more details.
  14
  15    You should have received a copy of the GNU 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 /* Get those types that are already defined in other system include
  27    files, so that we can "#define int8_t signed char" below without
  28    worrying about a later system include file containing a "typedef
  29    signed char int8_t;" that will get messed up by our macro.  Our
  30    macros should all be consistent with the system versions, except
  31    for the "fast" types and macros, which we recommend against using
  32    in public interfaces due to compiler differences.  */
  33
  34 #if @HAVE_STDINT_H@
  35 # if defined __sgi && ! defined __c99
  36    /* Bypass IRIX's <stdint.h> if in C89 mode, since it merely annoys users
  37       with "This header file is to be used only for c99 mode compilations"
  38       diagnostics.  */
  39 #  define __STDINT_H__
  40 # endif
  41   /* Other systems may have an incomplete or buggy <stdint.h>.
  42      Include it before <inttypes.h>, since any "#include <stdint.h>"
  43      in <inttypes.h> would reinclude us, skipping our contents because
  44      _GL_STDINT_H is defined.
  45      The include_next requires a split double-inclusion guard.  */
  46 # @INCLUDE_NEXT@ @NEXT_STDINT_H@
  47 #endif
  48
  49 #if ! defined _GL_STDINT_H && ! defined _GL_JUST_INCLUDE_SYSTEM_STDINT_H
  50 #define _GL_STDINT_H
  51
  52 /* <sys/types.h> defines some of the stdint.h types as well, on glibc,
  53    IRIX 6.5, and OpenBSD 3.8 (via <machine/types.h>).
  54    AIX 5.2 <sys/types.h> isn't needed and causes troubles.
  55    MacOS X 10.4.6 <sys/types.h> includes <stdint.h> (which is us), but
  56    relies on the system <stdint.h> definitions, so include
  57    <sys/types.h> after @NEXT_STDINT_H@.  */
  58 #if @HAVE_SYS_TYPES_H@ && ! defined _AIX
  59 # include <sys/types.h>
  60 #endif
  61
  62 /* Get LONG_MIN, LONG_MAX, ULONG_MAX.  */
  63 #include <limits.h>
  64
  65 #if @HAVE_INTTYPES_H@
  66   /* In OpenBSD 3.8, <inttypes.h> includes <machine/types.h>, which defines
  67      int{8,16,32,64}_t, uint{8,16,32,64}_t and __BIT_TYPES_DEFINED__.
  68      <inttypes.h> also defines intptr_t and uintptr_t.  */
  69 # define _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H
  70 # include <inttypes.h>
  71 # undef _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H
  72 #elif @HAVE_SYS_INTTYPES_H@
  73   /* Solaris 7 <sys/inttypes.h> has the types except the *_fast*_t types, and
  74      the macros except for *_FAST*_*, INTPTR_MIN, PTRDIFF_MIN, PTRDIFF_MAX.  */
  75 # include <sys/inttypes.h>
  76 #endif
  77
  78 #if @HAVE_SYS_BITYPES_H@ && ! defined __BIT_TYPES_DEFINED__
  79   /* Linux libc4 >= 4.6.7 and libc5 have a <sys/bitypes.h> that defines
  80      int{8,16,32,64}_t and __BIT_TYPES_DEFINED__.  In libc5 >= 5.2.2 it is
  81      included by <sys/types.h>.  */
  82 # include <sys/bitypes.h>
  83 #endif
  84
  85 #if ! defined __cplusplus || defined __STDC_CONSTANT_MACROS
  86
  87 /* Get WCHAR_MIN, WCHAR_MAX.  */
  88 # if ! (defined WCHAR_MIN && defined WCHAR_MAX)
  89 #  include <wchar.h>
  90 # endif
  91
  92 #endif
  93
  94 /* Minimum and maximum values for a integer type under the usual assumption.
  95    Return an unspecified value if BITS == 0, adding a check to pacify
  96    picky compilers.  */
  97
  98 #define _STDINT_MIN(signed, bits, zero) \
  99   ((signed) ? (- ((zero) + 1) << ((bits) ? (bits) - 1 : 0)) : (zero))
 100
 101 #define _STDINT_MAX(signed, bits, zero) \
 102   ((signed) \
 103    ? ~ _STDINT_MIN (signed, bits, zero) \
 104    : ((((zero) + 1) << ((bits) ? (bits) - 1 : 0)) - 1) * 2 + 1)
 105
 106 /* 7.18.1.1. Exact-width integer types */
 107
 108 /* Here we assume a standard architecture where the hardware integer
 109    types have 8, 16, 32, optionally 64 bits.  */
 110
 111 #undef int8_t
 112 #undef uint8_t
 113 #define int8_t signed char
 114 #define uint8_t unsigned char
 115
 116 #undef int16_t
 117 #undef uint16_t
 118 #define int16_t short int
 119 #define uint16_t unsigned short int
 120
 121 #undef int32_t
 122 #undef uint32_t
 123 #define int32_t int
 124 #define uint32_t unsigned int
 125
 126 /* Do not undefine int64_t if gnulib is not being used with 64-bit
 127    types, since otherwise it breaks platforms like Tandem/NSK.  */
 128 #if LONG_MAX >> 31 >> 31 == 1
 129 # undef int64_t
 130 # define int64_t long int
 131 # define GL_INT64_T
 132 #elif defined _MSC_VER
 133 # undef int64_t
 134 # define int64_t __int64
 135 # define GL_INT64_T
 136 #elif @HAVE_LONG_LONG_INT@
 137 # undef int64_t
 138 # define int64_t long long int
 139 # define GL_INT64_T
 140 #endif
 141
 142 #if ULONG_MAX >> 31 >> 31 >> 1 == 1
 143 # undef uint64_t
 144 # define uint64_t unsigned long int
 145 # define GL_UINT64_T
 146 #elif defined _MSC_VER
 147 # undef uint64_t
 148 # define uint64_t unsigned __int64
 149 # define GL_UINT64_T
 150 #elif @HAVE_UNSIGNED_LONG_LONG_INT@
 151 # undef uint64_t
 152 # define uint64_t unsigned long long int
 153 # define GL_UINT64_T
 154 #endif
 155
 156 /* Avoid collision with Solaris 2.5.1 <pthread.h> etc.  */
 157 #define _UINT8_T
 158 #define _UINT32_T
 159 #define _UINT64_T
 160
 161
 162 /* 7.18.1.2. Minimum-width integer types */
 163
 164 /* Here we assume a standard architecture where the hardware integer
 165    types have 8, 16, 32, optionally 64 bits. Therefore the leastN_t types
 166    are the same as the corresponding N_t types.  */
 167
 168 #undef int_least8_t
 169 #undef uint_least8_t
 170 #undef int_least16_t
 171 #undef uint_least16_t
 172 #undef int_least32_t
 173 #undef uint_least32_t
 174 #undef int_least64_t
 175 #undef uint_least64_t
 176 #define int_least8_t int8_t
 177 #define uint_least8_t uint8_t
 178 #define int_least16_t int16_t
 179 #define uint_least16_t uint16_t
 180 #define int_least32_t int32_t
 181 #define uint_least32_t uint32_t
 182 #ifdef GL_INT64_T
 183 # define int_least64_t int64_t
 184 #endif
 185 #ifdef GL_UINT64_T
 186 # define uint_least64_t uint64_t
 187 #endif
 188
 189 /* 7.18.1.3. Fastest minimum-width integer types */
 190
 191 /* Note: Other <stdint.h> substitutes may define these types differently.
 192    It is not recommended to use these types in public header files. */
 193
 194 /* Here we assume a standard architecture where the hardware integer
 195    types have 8, 16, 32, optionally 64 bits. Therefore the fastN_t types
 196    are taken from the same list of types.  Assume that 'long int'
 197    is fast enough for all narrower integers.  */
 198
 199 #undef int_fast8_t
 200 #undef uint_fast8_t
 201 #undef int_fast16_t
 202 #undef uint_fast16_t
 203 #undef int_fast32_t
 204 #undef uint_fast32_t
 205 #undef int_fast64_t
 206 #undef uint_fast64_t
 207 #define int_fast8_t long int
 208 #define uint_fast8_t unsigned int_fast8_t
 209 #define int_fast16_t long int
 210 #define uint_fast16_t unsigned int_fast16_t
 211 #define int_fast32_t long int
 212 #define uint_fast32_t unsigned int_fast32_t
 213 #ifdef GL_INT64_T
 214 # define int_fast64_t int64_t
 215 #endif
 216 #ifdef GL_UINT64_T
 217 # define uint_fast64_t uint64_t
 218 #endif
 219
 220 /* 7.18.1.4. Integer types capable of holding object pointers */
 221
 222 #undef intptr_t
 223 #undef uintptr_t
 224 #define intptr_t long int
 225 #define uintptr_t unsigned long int
 226
 227 /* 7.18.1.5. Greatest-width integer types */
 228
 229 /* Note: These types are compiler dependent. It may be unwise to use them in
 230    public header files. */
 231
 232 #undef intmax_t
 233 #if @HAVE_LONG_LONG_INT@ && LONG_MAX >> 30 == 1
 234 # define intmax_t long long int
 235 #elif defined GL_INT64_T
 236 # define intmax_t int64_t
 237 #else
 238 # define intmax_t long int
 239 #endif
 240
 241 #undef uintmax_t
 242 #if @HAVE_UNSIGNED_LONG_LONG_INT@ && ULONG_MAX >> 31 == 1
 243 # define uintmax_t unsigned long long int
 244 #elif defined GL_UINT64_T
 245 # define uintmax_t uint64_t
 246 #else
 247 # define uintmax_t unsigned long int
 248 #endif
 249
 250 /* 7.18.2. Limits of specified-width integer types */
 251
 252 #if ! defined __cplusplus || defined __STDC_LIMIT_MACROS
 253
 254 /* 7.18.2.1. Limits of exact-width integer types */
 255
 256 /* Here we assume a standard architecture where the hardware integer
 257    types have 8, 16, 32, optionally 64 bits.  */
 258
 259 #undef INT8_MIN
 260 #undef INT8_MAX
 261 #undef UINT8_MAX
 262 #define INT8_MIN  (~ INT8_MAX)
 263 #define INT8_MAX  127
 264 #define UINT8_MAX  255
 265
 266 #undef INT16_MIN
 267 #undef INT16_MAX
 268 #undef UINT16_MAX
 269 #define INT16_MIN  (~ INT16_MAX)
 270 #define INT16_MAX  32767
 271 #define UINT16_MAX  65535
 272
 273 #undef INT32_MIN
 274 #undef INT32_MAX
 275 #undef UINT32_MAX
 276 #define INT32_MIN  (~ INT32_MAX)
 277 #define INT32_MAX  2147483647
 278 #define UINT32_MAX  4294967295U
 279
 280 #undef INT64_MIN
 281 #undef INT64_MAX
 282 #ifdef GL_INT64_T
 283 /* Prefer (- INTMAX_C (1) << 63) over (~ INT64_MAX) because SunPRO C 5.0
 284    evaluates the latter incorrectly in preprocessor expressions.  */
 285 # define INT64_MIN  (- INTMAX_C (1) << 63)
 286 # define INT64_MAX  INTMAX_C (9223372036854775807)
 287 #endif
 288
 289 #undef UINT64_MAX
 290 #ifdef GL_UINT64_T
 291 # define UINT64_MAX  UINTMAX_C (18446744073709551615)
 292 #endif
 293
 294 /* 7.18.2.2. Limits of minimum-width integer types */
 295
 296 /* Here we assume a standard architecture where the hardware integer
 297    types have 8, 16, 32, optionally 64 bits. Therefore the leastN_t types
 298    are the same as the corresponding N_t types.  */
 299
 300 #undef INT_LEAST8_MIN
 301 #undef INT_LEAST8_MAX
 302 #undef UINT_LEAST8_MAX
 303 #define INT_LEAST8_MIN  INT8_MIN
 304 #define INT_LEAST8_MAX  INT8_MAX
 305 #define UINT_LEAST8_MAX  UINT8_MAX
 306
 307 #undef INT_LEAST16_MIN
 308 #undef INT_LEAST16_MAX
 309 #undef UINT_LEAST16_MAX
 310 #define INT_LEAST16_MIN  INT16_MIN
 311 #define INT_LEAST16_MAX  INT16_MAX
 312 #define UINT_LEAST16_MAX  UINT16_MAX
 313
 314 #undef INT_LEAST32_MIN
 315 #undef INT_LEAST32_MAX
 316 #undef UINT_LEAST32_MAX
 317 #define INT_LEAST32_MIN  INT32_MIN
 318 #define INT_LEAST32_MAX  INT32_MAX
 319 #define UINT_LEAST32_MAX  UINT32_MAX
 320
 321 #undef INT_LEAST64_MIN
 322 #undef INT_LEAST64_MAX
 323 #ifdef GL_INT64_T
 324 # define INT_LEAST64_MIN  INT64_MIN
 325 # define INT_LEAST64_MAX  INT64_MAX
 326 #endif
 327
 328 #undef UINT_LEAST64_MAX
 329 #ifdef GL_UINT64_T
 330 # define UINT_LEAST64_MAX  UINT64_MAX
 331 #endif
 332
 333 /* 7.18.2.3. Limits of fastest minimum-width integer types */
 334
 335 /* Here we assume a standard architecture where the hardware integer
 336    types have 8, 16, 32, optionally 64 bits. Therefore the fastN_t types
 337    are taken from the same list of types.  */
 338
 339 #undef INT_FAST8_MIN
 340 #undef INT_FAST8_MAX
 341 #undef UINT_FAST8_MAX
 342 #define INT_FAST8_MIN  LONG_MIN
 343 #define INT_FAST8_MAX  LONG_MAX
 344 #define UINT_FAST8_MAX  ULONG_MAX
 345
 346 #undef INT_FAST16_MIN
 347 #undef INT_FAST16_MAX
 348 #undef UINT_FAST16_MAX
 349 #define INT_FAST16_MIN  LONG_MIN
 350 #define INT_FAST16_MAX  LONG_MAX
 351 #define UINT_FAST16_MAX  ULONG_MAX
 352
 353 #undef INT_FAST32_MIN
 354 #undef INT_FAST32_MAX
 355 #undef UINT_FAST32_MAX
 356 #define INT_FAST32_MIN  LONG_MIN
 357 #define INT_FAST32_MAX  LONG_MAX
 358 #define UINT_FAST32_MAX  ULONG_MAX
 359
 360 #undef INT_FAST64_MIN
 361 #undef INT_FAST64_MAX
 362 #ifdef GL_INT64_T
 363 # define INT_FAST64_MIN  INT64_MIN
 364 # define INT_FAST64_MAX  INT64_MAX
 365 #endif
 366
 367 #undef UINT_FAST64_MAX
 368 #ifdef GL_UINT64_T
 369 # define UINT_FAST64_MAX  UINT64_MAX
 370 #endif
 371
 372 /* 7.18.2.4. Limits of integer types capable of holding object pointers */
 373
 374 #undef INTPTR_MIN
 375 #undef INTPTR_MAX
 376 #undef UINTPTR_MAX
 377 #define INTPTR_MIN  LONG_MIN
 378 #define INTPTR_MAX  LONG_MAX
 379 #define UINTPTR_MAX  ULONG_MAX
 380
 381 /* 7.18.2.5. Limits of greatest-width integer types */
 382
 383 #undef INTMAX_MIN
 384 #undef INTMAX_MAX
 385 #ifdef INT64_MAX
 386 # define INTMAX_MIN  INT64_MIN
 387 # define INTMAX_MAX  INT64_MAX
 388 #else
 389 # define INTMAX_MIN  INT32_MIN
 390 # define INTMAX_MAX  INT32_MAX
 391 #endif
 392
 393 #undef UINTMAX_MAX
 394 #ifdef UINT64_MAX
 395 # define UINTMAX_MAX  UINT64_MAX
 396 #else
 397 # define UINTMAX_MAX  UINT32_MAX
 398 #endif
 399
 400 /* 7.18.3. Limits of other integer types */
 401
 402 /* ptrdiff_t limits */
 403 #undef PTRDIFF_MIN
 404 #undef PTRDIFF_MAX
 405 #define PTRDIFF_MIN  \
 406    _STDINT_MIN (1, @BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
 407 #define PTRDIFF_MAX  \
 408    _STDINT_MAX (1, @BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
 409
 410 /* sig_atomic_t limits */
 411 #undef SIG_ATOMIC_MIN
 412 #undef SIG_ATOMIC_MAX
 413 #define SIG_ATOMIC_MIN  \
 414    _STDINT_MIN (@HAVE_SIGNED_SIG_ATOMIC_T@, @BITSIZEOF_SIG_ATOMIC_T@, \
 415                 0@SIG_ATOMIC_T_SUFFIX@)
 416 #define SIG_ATOMIC_MAX  \
 417    _STDINT_MAX (@HAVE_SIGNED_SIG_ATOMIC_T@, @BITSIZEOF_SIG_ATOMIC_T@, \
 418                 0@SIG_ATOMIC_T_SUFFIX@)
 419
 420
 421 /* size_t limit */
 422 #undef SIZE_MAX
 423 #define SIZE_MAX  _STDINT_MAX (0, @BITSIZEOF_SIZE_T@, 0@SIZE_T_SUFFIX@)
 424
 425 /* wchar_t limits */
 426 #undef WCHAR_MIN
 427 #undef WCHAR_MAX
 428 #define WCHAR_MIN  \
 429    _STDINT_MIN (@HAVE_SIGNED_WCHAR_T@, @BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
 430 #define WCHAR_MAX  \
 431    _STDINT_MAX (@HAVE_SIGNED_WCHAR_T@, @BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
 432
 433 /* wint_t limits */
 434 #undef WINT_MIN
 435 #undef WINT_MAX
 436 #define WINT_MIN  \
 437    _STDINT_MIN (@HAVE_SIGNED_WINT_T@, @BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
 438 #define WINT_MAX  \
 439    _STDINT_MAX (@HAVE_SIGNED_WINT_T@, @BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
 440
 441 #endif /* !defined __cplusplus || defined __STDC_LIMIT_MACROS */
 442
 443 /* 7.18.4. Macros for integer constants */
 444
 445 #if ! defined __cplusplus || defined __STDC_CONSTANT_MACROS
 446
 447 /* 7.18.4.1. Macros for minimum-width integer constants */
 448 /* According to ISO C 99 Technical Corrigendum 1 */
 449
 450 /* Here we assume a standard architecture where the hardware integer
 451    types have 8, 16, 32, optionally 64 bits, and int is 32 bits.  */
 452
 453 #undef INT8_C
 454 #undef UINT8_C
 455 #define INT8_C(x) x
 456 #define UINT8_C(x) x
 457
 458 #undef INT16_C
 459 #undef UINT16_C
 460 #define INT16_C(x) x
 461 #define UINT16_C(x) x
 462
 463 #undef INT32_C
 464 #undef UINT32_C
 465 #define INT32_C(x) x
 466 #define UINT32_C(x) x ## U
 467
 468 #undef INT64_C
 469 #undef UINT64_C
 470 #if LONG_MAX >> 31 >> 31 == 1
 471 # define INT64_C(x) x##L
 472 #elif defined _MSC_VER
 473 # define INT64_C(x) x##i64
 474 #elif @HAVE_LONG_LONG_INT@
 475 # define INT64_C(x) x##LL
 476 #endif
 477 #if ULONG_MAX >> 31 >> 31 >> 1 == 1
 478 # define UINT64_C(x) x##UL
 479 #elif defined _MSC_VER
 480 # define UINT64_C(x) x##ui64
 481 #elif @HAVE_UNSIGNED_LONG_LONG_INT@
 482 # define UINT64_C(x) x##ULL
 483 #endif
 484
 485 /* 7.18.4.2. Macros for greatest-width integer constants */
 486
 487 #undef INTMAX_C
 488 #if @HAVE_LONG_LONG_INT@ && LONG_MAX >> 30 == 1
 489 # define INTMAX_C(x)   x##LL
 490 #elif defined GL_INT64_T
 491 # define INTMAX_C(x)   INT64_C(x)
 492 #else
 493 # define INTMAX_C(x)   x##L
 494 #endif
 495
 496 #undef UINTMAX_C
 497 #if @HAVE_UNSIGNED_LONG_LONG_INT@ && ULONG_MAX >> 31 == 1
 498 # define UINTMAX_C(x)  x##ULL
 499 #elif defined GL_UINT64_T
 500 # define UINTMAX_C(x)  UINT64_C(x)
 501 #else
 502 # define UINTMAX_C(x)  x##UL
 503 #endif
 504
 505 #endif /* !defined __cplusplus || defined __STDC_CONSTANT_MACROS */
 506
 507 #endif /* _GL_STDINT_H */
 508 #endif /* !defined _GL_STDINT_H && !defined _GL_JUST_INCLUDE_SYSTEM_STDINT_H */