lgl/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 Lesser General Public License as published by
   7    the Free Software Foundation; either version 2.1, 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 /* 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    : /* The expression for the unsigned case.  The subtraction of (signed) \
 105         is a nop in the unsigned case and avoids "signed integer overflow" \
 106         warnings in the signed case.  */ \
 107      ((((zero) + 1) << ((bits) ? (bits) - 1 - (signed) : 0)) - 1) * 2 + 1)
 108
 109 /* 7.18.1.1. Exact-width integer types */
 110
 111 /* Here we assume a standard architecture where the hardware integer
 112    types have 8, 16, 32, optionally 64 bits.  */
 113
 114 #undef int8_t
 115 #undef uint8_t
 116 #define int8_t signed char
 117 #define uint8_t unsigned char
 118
 119 #undef int16_t
 120 #undef uint16_t
 121 #define int16_t short int
 122 #define uint16_t unsigned short int
 123
 124 #undef int32_t
 125 #undef uint32_t
 126 #define int32_t int
 127 #define uint32_t unsigned int
 128
 129 /* Do not undefine int64_t if gnulib is not being used with 64-bit
 130    types, since otherwise it breaks platforms like Tandem/NSK.  */
 131 #if LONG_MAX >> 31 >> 31 == 1
 132 # undef int64_t
 133 # define int64_t long int
 134 # define GL_INT64_T
 135 #elif defined _MSC_VER
 136 # undef int64_t
 137 # define int64_t __int64
 138 # define GL_INT64_T
 139 #elif @HAVE_LONG_LONG_INT@
 140 # undef int64_t
 141 # define int64_t long long int
 142 # define GL_INT64_T
 143 #endif
 144
 145 #if ULONG_MAX >> 31 >> 31 >> 1 == 1
 146 # undef uint64_t
 147 # define uint64_t unsigned long int
 148 # define GL_UINT64_T
 149 #elif defined _MSC_VER
 150 # undef uint64_t
 151 # define uint64_t unsigned __int64
 152 # define GL_UINT64_T
 153 #elif @HAVE_UNSIGNED_LONG_LONG_INT@
 154 # undef uint64_t
 155 # define uint64_t unsigned long long int
 156 # define GL_UINT64_T
 157 #endif
 158
 159 /* Avoid collision with Solaris 2.5.1 <pthread.h> etc.  */
 160 #define _UINT8_T
 161 #define _UINT32_T
 162 #define _UINT64_T
 163
 164
 165 /* 7.18.1.2. Minimum-width integer types */
 166
 167 /* Here we assume a standard architecture where the hardware integer
 168    types have 8, 16, 32, optionally 64 bits. Therefore the leastN_t types
 169    are the same as the corresponding N_t types.  */
 170
 171 #undef int_least8_t
 172 #undef uint_least8_t
 173 #undef int_least16_t
 174 #undef uint_least16_t
 175 #undef int_least32_t
 176 #undef uint_least32_t
 177 #undef int_least64_t
 178 #undef uint_least64_t
 179 #define int_least8_t int8_t
 180 #define uint_least8_t uint8_t
 181 #define int_least16_t int16_t
 182 #define uint_least16_t uint16_t
 183 #define int_least32_t int32_t
 184 #define uint_least32_t uint32_t
 185 #ifdef GL_INT64_T
 186 # define int_least64_t int64_t
 187 #endif
 188 #ifdef GL_UINT64_T
 189 # define uint_least64_t uint64_t
 190 #endif
 191
 192 /* 7.18.1.3. Fastest minimum-width integer types */
 193
 194 /* Note: Other <stdint.h> substitutes may define these types differently.
 195    It is not recommended to use these types in public header files. */
 196
 197 /* Here we assume a standard architecture where the hardware integer
 198    types have 8, 16, 32, optionally 64 bits. Therefore the fastN_t types
 199    are taken from the same list of types.  Assume that 'long int'
 200    is fast enough for all narrower integers.  */
 201
 202 #undef int_fast8_t
 203 #undef uint_fast8_t
 204 #undef int_fast16_t
 205 #undef uint_fast16_t
 206 #undef int_fast32_t
 207 #undef uint_fast32_t
 208 #undef int_fast64_t
 209 #undef uint_fast64_t
 210 #define int_fast8_t long int
 211 #define uint_fast8_t unsigned int_fast8_t
 212 #define int_fast16_t long int
 213 #define uint_fast16_t unsigned int_fast16_t
 214 #define int_fast32_t long int
 215 #define uint_fast32_t unsigned int_fast32_t
 216 #ifdef GL_INT64_T
 217 # define int_fast64_t int64_t
 218 #endif
 219 #ifdef GL_UINT64_T
 220 # define uint_fast64_t uint64_t
 221 #endif
 222
 223 /* 7.18.1.4. Integer types capable of holding object pointers */
 224
 225 #undef intptr_t
 226 #undef uintptr_t
 227 #define intptr_t long int
 228 #define uintptr_t unsigned long int
 229
 230 /* 7.18.1.5. Greatest-width integer types */
 231
 232 /* Note: These types are compiler dependent. It may be unwise to use them in
 233    public header files. */
 234
 235 #undef intmax_t
 236 #if @HAVE_LONG_LONG_INT@ && LONG_MAX >> 30 == 1
 237 # define intmax_t long long int
 238 #elif defined GL_INT64_T
 239 # define intmax_t int64_t
 240 #else
 241 # define intmax_t long int
 242 #endif
 243
 244 #undef uintmax_t
 245 #if @HAVE_UNSIGNED_LONG_LONG_INT@ && ULONG_MAX >> 31 == 1
 246 # define uintmax_t unsigned long long int
 247 #elif defined GL_UINT64_T
 248 # define uintmax_t uint64_t
 249 #else
 250 # define uintmax_t unsigned long int
 251 #endif
 252
 253 /* Verify that intmax_t and uintmax_t have the same size.  Too much code
 254    breaks if this is not the case.  If this check fails, the reason is likely
 255    to be found in the autoconf macros.  */
 256 typedef int _verify_intmax_size[2 * (sizeof (intmax_t) == sizeof (uintmax_t)) - 1];
 257
 258 /* 7.18.2. Limits of specified-width integer types */
 259
 260 #if ! defined __cplusplus || defined __STDC_LIMIT_MACROS
 261
 262 /* 7.18.2.1. Limits of exact-width integer types */
 263
 264 /* Here we assume a standard architecture where the hardware integer
 265    types have 8, 16, 32, optionally 64 bits.  */
 266
 267 #undef INT8_MIN
 268 #undef INT8_MAX
 269 #undef UINT8_MAX
 270 #define INT8_MIN  (~ INT8_MAX)
 271 #define INT8_MAX  127
 272 #define UINT8_MAX  255
 273
 274 #undef INT16_MIN
 275 #undef INT16_MAX
 276 #undef UINT16_MAX
 277 #define INT16_MIN  (~ INT16_MAX)
 278 #define INT16_MAX  32767
 279 #define UINT16_MAX  65535
 280
 281 #undef INT32_MIN
 282 #undef INT32_MAX
 283 #undef UINT32_MAX
 284 #define INT32_MIN  (~ INT32_MAX)
 285 #define INT32_MAX  2147483647
 286 #define UINT32_MAX  4294967295U
 287
 288 #undef INT64_MIN
 289 #undef INT64_MAX
 290 #ifdef GL_INT64_T
 291 /* Prefer (- INTMAX_C (1) << 63) over (~ INT64_MAX) because SunPRO C 5.0
 292    evaluates the latter incorrectly in preprocessor expressions.  */
 293 # define INT64_MIN  (- INTMAX_C (1) << 63)
 294 # define INT64_MAX  INTMAX_C (9223372036854775807)
 295 #endif
 296
 297 #undef UINT64_MAX
 298 #ifdef GL_UINT64_T
 299 # define UINT64_MAX  UINTMAX_C (18446744073709551615)
 300 #endif
 301
 302 /* 7.18.2.2. Limits of minimum-width integer types */
 303
 304 /* Here we assume a standard architecture where the hardware integer
 305    types have 8, 16, 32, optionally 64 bits. Therefore the leastN_t types
 306    are the same as the corresponding N_t types.  */
 307
 308 #undef INT_LEAST8_MIN
 309 #undef INT_LEAST8_MAX
 310 #undef UINT_LEAST8_MAX
 311 #define INT_LEAST8_MIN  INT8_MIN
 312 #define INT_LEAST8_MAX  INT8_MAX
 313 #define UINT_LEAST8_MAX  UINT8_MAX
 314
 315 #undef INT_LEAST16_MIN
 316 #undef INT_LEAST16_MAX
 317 #undef UINT_LEAST16_MAX
 318 #define INT_LEAST16_MIN  INT16_MIN
 319 #define INT_LEAST16_MAX  INT16_MAX
 320 #define UINT_LEAST16_MAX  UINT16_MAX
 321
 322 #undef INT_LEAST32_MIN
 323 #undef INT_LEAST32_MAX
 324 #undef UINT_LEAST32_MAX
 325 #define INT_LEAST32_MIN  INT32_MIN
 326 #define INT_LEAST32_MAX  INT32_MAX
 327 #define UINT_LEAST32_MAX  UINT32_MAX
 328
 329 #undef INT_LEAST64_MIN
 330 #undef INT_LEAST64_MAX
 331 #ifdef GL_INT64_T
 332 # define INT_LEAST64_MIN  INT64_MIN
 333 # define INT_LEAST64_MAX  INT64_MAX
 334 #endif
 335
 336 #undef UINT_LEAST64_MAX
 337 #ifdef GL_UINT64_T
 338 # define UINT_LEAST64_MAX  UINT64_MAX
 339 #endif
 340
 341 /* 7.18.2.3. Limits of fastest minimum-width integer types */
 342
 343 /* Here we assume a standard architecture where the hardware integer
 344    types have 8, 16, 32, optionally 64 bits. Therefore the fastN_t types
 345    are taken from the same list of types.  */
 346
 347 #undef INT_FAST8_MIN
 348 #undef INT_FAST8_MAX
 349 #undef UINT_FAST8_MAX
 350 #define INT_FAST8_MIN  LONG_MIN
 351 #define INT_FAST8_MAX  LONG_MAX
 352 #define UINT_FAST8_MAX  ULONG_MAX
 353
 354 #undef INT_FAST16_MIN
 355 #undef INT_FAST16_MAX
 356 #undef UINT_FAST16_MAX
 357 #define INT_FAST16_MIN  LONG_MIN
 358 #define INT_FAST16_MAX  LONG_MAX
 359 #define UINT_FAST16_MAX  ULONG_MAX
 360
 361 #undef INT_FAST32_MIN
 362 #undef INT_FAST32_MAX
 363 #undef UINT_FAST32_MAX
 364 #define INT_FAST32_MIN  LONG_MIN
 365 #define INT_FAST32_MAX  LONG_MAX
 366 #define UINT_FAST32_MAX  ULONG_MAX
 367
 368 #undef INT_FAST64_MIN
 369 #undef INT_FAST64_MAX
 370 #ifdef GL_INT64_T
 371 # define INT_FAST64_MIN  INT64_MIN
 372 # define INT_FAST64_MAX  INT64_MAX
 373 #endif
 374
 375 #undef UINT_FAST64_MAX
 376 #ifdef GL_UINT64_T
 377 # define UINT_FAST64_MAX  UINT64_MAX
 378 #endif
 379
 380 /* 7.18.2.4. Limits of integer types capable of holding object pointers */
 381
 382 #undef INTPTR_MIN
 383 #undef INTPTR_MAX
 384 #undef UINTPTR_MAX
 385 #define INTPTR_MIN  LONG_MIN
 386 #define INTPTR_MAX  LONG_MAX
 387 #define UINTPTR_MAX  ULONG_MAX
 388
 389 /* 7.18.2.5. Limits of greatest-width integer types */
 390
 391 #undef INTMAX_MIN
 392 #undef INTMAX_MAX
 393 #ifdef INT64_MAX
 394 # define INTMAX_MIN  INT64_MIN
 395 # define INTMAX_MAX  INT64_MAX
 396 #else
 397 # define INTMAX_MIN  INT32_MIN
 398 # define INTMAX_MAX  INT32_MAX
 399 #endif
 400
 401 #undef UINTMAX_MAX
 402 #ifdef UINT64_MAX
 403 # define UINTMAX_MAX  UINT64_MAX
 404 #else
 405 # define UINTMAX_MAX  UINT32_MAX
 406 #endif
 407
 408 /* 7.18.3. Limits of other integer types */
 409
 410 /* ptrdiff_t limits */
 411 #undef PTRDIFF_MIN
 412 #undef PTRDIFF_MAX
 413 #define PTRDIFF_MIN  \
 414    _STDINT_MIN (1, @BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
 415 #define PTRDIFF_MAX  \
 416    _STDINT_MAX (1, @BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
 417
 418 /* sig_atomic_t limits */
 419 #undef SIG_ATOMIC_MIN
 420 #undef SIG_ATOMIC_MAX
 421 #define SIG_ATOMIC_MIN  \
 422    _STDINT_MIN (@HAVE_SIGNED_SIG_ATOMIC_T@, @BITSIZEOF_SIG_ATOMIC_T@, \
 423                 0@SIG_ATOMIC_T_SUFFIX@)
 424 #define SIG_ATOMIC_MAX  \
 425    _STDINT_MAX (@HAVE_SIGNED_SIG_ATOMIC_T@, @BITSIZEOF_SIG_ATOMIC_T@, \
 426                 0@SIG_ATOMIC_T_SUFFIX@)
 427
 428
 429 /* size_t limit */
 430 #undef SIZE_MAX
 431 #define SIZE_MAX  _STDINT_MAX (0, @BITSIZEOF_SIZE_T@, 0@SIZE_T_SUFFIX@)
 432
 433 /* wchar_t limits */
 434 #undef WCHAR_MIN
 435 #undef WCHAR_MAX
 436 #define WCHAR_MIN  \
 437    _STDINT_MIN (@HAVE_SIGNED_WCHAR_T@, @BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
 438 #define WCHAR_MAX  \
 439    _STDINT_MAX (@HAVE_SIGNED_WCHAR_T@, @BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
 440
 441 /* wint_t limits */
 442 #undef WINT_MIN
 443 #undef WINT_MAX
 444 #define WINT_MIN  \
 445    _STDINT_MIN (@HAVE_SIGNED_WINT_T@, @BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
 446 #define WINT_MAX  \
 447    _STDINT_MAX (@HAVE_SIGNED_WINT_T@, @BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
 448
 449 #endif /* !defined __cplusplus || defined __STDC_LIMIT_MACROS */
 450
 451 /* 7.18.4. Macros for integer constants */
 452
 453 #if ! defined __cplusplus || defined __STDC_CONSTANT_MACROS
 454
 455 /* 7.18.4.1. Macros for minimum-width integer constants */
 456 /* According to ISO C 99 Technical Corrigendum 1 */
 457
 458 /* Here we assume a standard architecture where the hardware integer
 459    types have 8, 16, 32, optionally 64 bits, and int is 32 bits.  */
 460
 461 #undef INT8_C
 462 #undef UINT8_C
 463 #define INT8_C(x) x
 464 #define UINT8_C(x) x
 465
 466 #undef INT16_C
 467 #undef UINT16_C
 468 #define INT16_C(x) x
 469 #define UINT16_C(x) x
 470
 471 #undef INT32_C
 472 #undef UINT32_C
 473 #define INT32_C(x) x
 474 #define UINT32_C(x) x ## U
 475
 476 #undef INT64_C
 477 #undef UINT64_C
 478 #if LONG_MAX >> 31 >> 31 == 1
 479 # define INT64_C(x) x##L
 480 #elif defined _MSC_VER
 481 # define INT64_C(x) x##i64
 482 #elif @HAVE_LONG_LONG_INT@
 483 # define INT64_C(x) x##LL
 484 #endif
 485 #if ULONG_MAX >> 31 >> 31 >> 1 == 1
 486 # define UINT64_C(x) x##UL
 487 #elif defined _MSC_VER
 488 # define UINT64_C(x) x##ui64
 489 #elif @HAVE_UNSIGNED_LONG_LONG_INT@
 490 # define UINT64_C(x) x##ULL
 491 #endif
 492
 493 /* 7.18.4.2. Macros for greatest-width integer constants */
 494
 495 #undef INTMAX_C
 496 #if @HAVE_LONG_LONG_INT@ && LONG_MAX >> 30 == 1
 497 # define INTMAX_C(x)   x##LL
 498 #elif defined GL_INT64_T
 499 # define INTMAX_C(x)   INT64_C(x)
 500 #else
 501 # define INTMAX_C(x)   x##L
 502 #endif
 503
 504 #undef UINTMAX_C
 505 #if @HAVE_UNSIGNED_LONG_LONG_INT@ && ULONG_MAX >> 31 == 1
 506 # define UINTMAX_C(x)  x##ULL
 507 #elif defined GL_UINT64_T
 508 # define UINTMAX_C(x)  UINT64_C(x)
 509 #else
 510 # define UINTMAX_C(x)  x##UL
 511 #endif
 512
 513 #endif /* !defined __cplusplus || defined __STDC_CONSTANT_MACROS */
 514
 515 #endif /* _GL_STDINT_H */
 516 #endif /* !defined _GL_STDINT_H && !defined _GL_JUST_INCLUDE_SYSTEM_STDINT_H */