gl/stdint_.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 # if @HAVE_INCLUDE_NEXT@
  47 #  include_next <stdint.h>
  48 # else
  49 #  include @ABSOLUTE_STDINT_H@
  50 # endif
  51 #endif
  52
  53 #ifndef _GL_STDINT_H
  54 #define _GL_STDINT_H
  55
  56 /* <sys/types.h> defines some of the stdint.h types as well, on glibc,
  57    IRIX 6.5, and OpenBSD 3.8 (via <machine/types.h>).
  58    AIX 5.2 <sys/types.h> isn't needed and causes troubles.
  59    MacOS X 10.4.6 <sys/types.h> includes <stdint.h> (which is us), but
  60    relies on the system <stdint.h> definitions, so include
  61    <sys/types.h> after @ABSOLUTE_STDINT_H@.  */
  62 #if @HAVE_SYS_TYPES_H@ && ! defined _AIX
  63 # include <sys/types.h>
  64 #endif
  65
  66 /* Get LONG_MIN, LONG_MAX, ULONG_MAX.  */
  67 #include <limits.h>
  68
  69 #if @HAVE_INTTYPES_H@
  70   /* In OpenBSD 3.8, <inttypes.h> includes <machine/types.h>, which defines
  71      int{8,16,32,64}_t, uint{8,16,32,64}_t and __BIT_TYPES_DEFINED__.
  72      <inttypes.h> also defines intptr_t and uintptr_t.  */
  73 # define _GL_JUST_INCLUDE_ABSOLUTE_INTTYPES_H
  74 # include <inttypes.h>
  75 # undef _GL_JUST_INCLUDE_ABSOLUTE_INTTYPES_H
  76 #elif @HAVE_SYS_INTTYPES_H@
  77   /* Solaris 7 <sys/inttypes.h> has the types except the *_fast*_t types, and
  78      the macros except for *_FAST*_*, INTPTR_MIN, PTRDIFF_MIN, PTRDIFF_MAX.  */
  79 # include <sys/inttypes.h>
  80 #endif
  81
  82 #if @HAVE_SYS_BITYPES_H@ && ! defined __BIT_TYPES_DEFINED__
  83   /* Linux libc4 >= 4.6.7 and libc5 have a <sys/bitypes.h> that defines
  84      int{8,16,32,64}_t and __BIT_TYPES_DEFINED__.  In libc5 >= 5.2.2 it is
  85      included by <sys/types.h>.  */
  86 # include <sys/bitypes.h>
  87 #endif
  88
  89 #if ! defined __cplusplus || defined __STDC_CONSTANT_MACROS
  90
  91 /* Get WCHAR_MIN, WCHAR_MAX.  */
  92 # if ! (defined WCHAR_MIN && defined WCHAR_MAX)
  93 #  include <wchar.h>
  94 # endif
  95
  96 #endif
  97
  98 /* Minimum and maximum values for a integer type under the usual assumption.
  99    Return an unspecified value if BITS == 0, adding a check to pacify
 100    picky compilers.  */
 101
 102 #define _STDINT_MIN(signed, bits, zero) \
 103   ((signed) ? (- ((zero) + 1) << ((bits) ? (bits) - 1 : 0)) : (zero))
 104
 105 #define _STDINT_MAX(signed, bits, zero) \
 106   ((signed) \
 107    ? ~ _STDINT_MIN (signed, bits, zero) \
 108    : ((((zero) + 1) << ((bits) ? (bits) - 1 : 0)) - 1) * 2 + 1)
 109
 110 /* 7.18.1.1. Exact-width integer types */
 111
 112 /* Here we assume a standard architecture where the hardware integer
 113    types have 8, 16, 32, optionally 64 bits.  */
 114
 115 #undef int8_t
 116 #undef uint8_t
 117 #define int8_t signed char
 118 #define uint8_t unsigned char
 119
 120 #undef int16_t
 121 #undef uint16_t
 122 #define int16_t short int
 123 #define uint16_t unsigned short int
 124
 125 #undef int32_t
 126 #undef uint32_t
 127 #define int32_t int
 128 #define uint32_t unsigned int
 129
 130 /* Do not undefine int64_t if gnulib is not being used with 64-bit
 131    types, since otherwise it breaks platforms like Tandem/NSK.  */
 132 #if LONG_MAX >> 31 >> 31 == 1
 133 # undef int64_t
 134 # define int64_t long int
 135 # define GL_INT64_T
 136 #elif defined _MSC_VER
 137 # undef int64_t
 138 # define int64_t __int64
 139 # define GL_INT64_T
 140 #elif @HAVE_LONG_LONG_INT@
 141 # undef int64_t
 142 # define int64_t long long int
 143 # define GL_INT64_T
 144 #endif
 145
 146 #if ULONG_MAX >> 31 >> 31 >> 1 == 1
 147 # undef uint64_t
 148 # define uint64_t unsigned long int
 149 # define GL_UINT64_T
 150 #elif defined _MSC_VER
 151 # undef uint64_t
 152 # define uint64_t unsigned __int64
 153 # define GL_UINT64_T
 154 #elif @HAVE_UNSIGNED_LONG_LONG_INT@
 155 # undef uint64_t
 156 # define uint64_t unsigned long long int
 157 # define GL_UINT64_T
 158 #endif
 159
 160 /* Avoid collision with Solaris 2.5.1 <pthread.h> etc.  */
 161 #define _UINT8_T
 162 #define _UINT32_T
 163 #define _UINT64_T
 164
 165
 166 /* 7.18.1.2. Minimum-width integer types */
 167
 168 /* Here we assume a standard architecture where the hardware integer
 169    types have 8, 16, 32, optionally 64 bits. Therefore the leastN_t types
 170    are the same as the corresponding N_t types.  */
 171
 172 #undef int_least8_t
 173 #undef uint_least8_t
 174 #undef int_least16_t
 175 #undef uint_least16_t
 176 #undef int_least32_t
 177 #undef uint_least32_t
 178 #undef int_least64_t
 179 #undef uint_least64_t
 180 #define int_least8_t int8_t
 181 #define uint_least8_t uint8_t
 182 #define int_least16_t int16_t
 183 #define uint_least16_t uint16_t
 184 #define int_least32_t int32_t
 185 #define uint_least32_t uint32_t
 186 #ifdef GL_INT64_T
 187 # define int_least64_t int64_t
 188 #endif
 189 #ifdef GL_UINT64_T
 190 # define uint_least64_t uint64_t
 191 #endif
 192
 193 /* 7.18.1.3. Fastest minimum-width integer types */
 194
 195 /* Note: Other <stdint.h> substitutes may define these types differently.
 196    It is not recommended to use these types in public header files. */
 197
 198 /* Here we assume a standard architecture where the hardware integer
 199    types have 8, 16, 32, optionally 64 bits. Therefore the fastN_t types
 200    are taken from the same list of types.  Assume that 'long int'
 201    is fast enough for all narrower integers.  */
 202
 203 #undef int_fast8_t
 204 #undef uint_fast8_t
 205 #undef int_fast16_t
 206 #undef uint_fast16_t
 207 #undef int_fast32_t
 208 #undef uint_fast32_t
 209 #undef int_fast64_t
 210 #undef uint_fast64_t
 211 #define int_fast8_t long int
 212 #define uint_fast8_t unsigned int_fast8_t
 213 #define int_fast16_t long int
 214 #define uint_fast16_t unsigned int_fast16_t
 215 #define int_fast32_t long int
 216 #define uint_fast32_t unsigned int_fast32_t
 217 #ifdef GL_INT64_T
 218 # define int_fast64_t int64_t
 219 #endif
 220 #ifdef GL_UINT64_T
 221 # define uint_fast64_t uint64_t
 222 #endif
 223
 224 /* 7.18.1.4. Integer types capable of holding object pointers */
 225
 226 #undef intptr_t
 227 #undef uintptr_t
 228 #define intptr_t long int
 229 #define uintptr_t unsigned long int
 230
 231 /* 7.18.1.5. Greatest-width integer types */
 232
 233 /* Note: These types are compiler dependent. It may be unwise to use them in
 234    public header files. */
 235
 236 #undef intmax_t
 237 #if @HAVE_LONG_LONG_INT@ && LONG_MAX >> 30 == 1
 238 # define intmax_t long long int
 239 #elif defined GL_INT64_T
 240 # define intmax_t int64_t
 241 #else
 242 # define intmax_t long int
 243 #endif
 244
 245 #undef uintmax_t
 246 #if @HAVE_UNSIGNED_LONG_LONG_INT@ && ULONG_MAX >> 31 == 1
 247 # define uintmax_t unsigned long long int
 248 #elif defined GL_UINT64_T
 249 # define uintmax_t uint64_t
 250 #else
 251 # define uintmax_t unsigned long int
 252 #endif
 253
 254 /* 7.18.2. Limits of specified-width integer types */
 255
 256 #if ! defined __cplusplus || defined __STDC_LIMIT_MACROS
 257
 258 /* 7.18.2.1. Limits of exact-width integer types */
 259
 260 /* Here we assume a standard architecture where the hardware integer
 261    types have 8, 16, 32, optionally 64 bits.  */
 262
 263 #undef INT8_MIN
 264 #undef INT8_MAX
 265 #undef UINT8_MAX
 266 #define INT8_MIN  (~ INT8_MAX)
 267 #define INT8_MAX  127
 268 #define UINT8_MAX  255
 269
 270 #undef INT16_MIN
 271 #undef INT16_MAX
 272 #undef UINT16_MAX
 273 #define INT16_MIN  (~ INT16_MAX)
 274 #define INT16_MAX  32767
 275 #define UINT16_MAX  65535
 276
 277 #undef INT32_MIN
 278 #undef INT32_MAX
 279 #undef UINT32_MAX
 280 #define INT32_MIN  (~ INT32_MAX)
 281 #define INT32_MAX  2147483647
 282 #define UINT32_MAX  4294967295U
 283
 284 #undef INT64_MIN
 285 #undef INT64_MAX
 286 #ifdef GL_INT64_T
 287 /* Prefer (- INTMAX_C (1) << 63) over (~ INT64_MAX) because SunPRO C 5.0
 288    evaluates the latter incorrectly in preprocessor expressions.  */
 289 # define INT64_MIN  (- INTMAX_C (1) << 63)
 290 # define INT64_MAX  INTMAX_C (9223372036854775807)
 291 #endif
 292
 293 #undef UINT64_MAX
 294 #ifdef GL_UINT64_T
 295 # define UINT64_MAX  UINTMAX_C (18446744073709551615)
 296 #endif
 297
 298 /* 7.18.2.2. Limits of minimum-width integer types */
 299
 300 /* Here we assume a standard architecture where the hardware integer
 301    types have 8, 16, 32, optionally 64 bits. Therefore the leastN_t types
 302    are the same as the corresponding N_t types.  */
 303
 304 #undef INT_LEAST8_MIN
 305 #undef INT_LEAST8_MAX
 306 #undef UINT_LEAST8_MAX
 307 #define INT_LEAST8_MIN  INT8_MIN
 308 #define INT_LEAST8_MAX  INT8_MAX
 309 #define UINT_LEAST8_MAX  UINT8_MAX
 310
 311 #undef INT_LEAST16_MIN
 312 #undef INT_LEAST16_MAX
 313 #undef UINT_LEAST16_MAX
 314 #define INT_LEAST16_MIN  INT16_MIN
 315 #define INT_LEAST16_MAX  INT16_MAX
 316 #define UINT_LEAST16_MAX  UINT16_MAX
 317
 318 #undef INT_LEAST32_MIN
 319 #undef INT_LEAST32_MAX
 320 #undef UINT_LEAST32_MAX
 321 #define INT_LEAST32_MIN  INT32_MIN
 322 #define INT_LEAST32_MAX  INT32_MAX
 323 #define UINT_LEAST32_MAX  UINT32_MAX
 324
 325 #undef INT_LEAST64_MIN
 326 #undef INT_LEAST64_MAX
 327 #ifdef GL_INT64_T
 328 # define INT_LEAST64_MIN  INT64_MIN
 329 # define INT_LEAST64_MAX  INT64_MAX
 330 #endif
 331
 332 #undef UINT_LEAST64_MAX
 333 #ifdef GL_UINT64_T
 334 # define UINT_LEAST64_MAX  UINT64_MAX
 335 #endif
 336
 337 /* 7.18.2.3. Limits of fastest minimum-width integer types */
 338
 339 /* Here we assume a standard architecture where the hardware integer
 340    types have 8, 16, 32, optionally 64 bits. Therefore the fastN_t types
 341    are taken from the same list of types.  */
 342
 343 #undef INT_FAST8_MIN
 344 #undef INT_FAST8_MAX
 345 #undef UINT_FAST8_MAX
 346 #define INT_FAST8_MIN  LONG_MIN
 347 #define INT_FAST8_MAX  LONG_MAX
 348 #define UINT_FAST8_MAX  ULONG_MAX
 349
 350 #undef INT_FAST16_MIN
 351 #undef INT_FAST16_MAX
 352 #undef UINT_FAST16_MAX
 353 #define INT_FAST16_MIN  LONG_MIN
 354 #define INT_FAST16_MAX  LONG_MAX
 355 #define UINT_FAST16_MAX  ULONG_MAX
 356
 357 #undef INT_FAST32_MIN
 358 #undef INT_FAST32_MAX
 359 #undef UINT_FAST32_MAX
 360 #define INT_FAST32_MIN  LONG_MIN
 361 #define INT_FAST32_MAX  LONG_MAX
 362 #define UINT_FAST32_MAX  ULONG_MAX
 363
 364 #undef INT_FAST64_MIN
 365 #undef INT_FAST64_MAX
 366 #ifdef GL_INT64_T
 367 # define INT_FAST64_MIN  INT64_MIN
 368 # define INT_FAST64_MAX  INT64_MAX
 369 #endif
 370
 371 #undef UINT_FAST64_MAX
 372 #ifdef GL_UINT64_T
 373 # define UINT_FAST64_MAX  UINT64_MAX
 374 #endif
 375
 376 /* 7.18.2.4. Limits of integer types capable of holding object pointers */
 377
 378 #undef INTPTR_MIN
 379 #undef INTPTR_MAX
 380 #undef UINTPTR_MAX
 381 #define INTPTR_MIN  LONG_MIN
 382 #define INTPTR_MAX  LONG_MAX
 383 #define UINTPTR_MAX  ULONG_MAX
 384
 385 /* 7.18.2.5. Limits of greatest-width integer types */
 386
 387 #undef INTMAX_MIN
 388 #undef INTMAX_MAX
 389 #ifdef INT64_MAX
 390 # define INTMAX_MIN  INT64_MIN
 391 # define INTMAX_MAX  INT64_MAX
 392 #else
 393 # define INTMAX_MIN  INT32_MIN
 394 # define INTMAX_MAX  INT32_MAX
 395 #endif
 396
 397 #undef UINTMAX_MAX
 398 #ifdef UINT64_MAX
 399 # define UINTMAX_MAX  UINT64_MAX
 400 #else
 401 # define UINTMAX_MAX  UINT32_MAX
 402 #endif
 403
 404 /* 7.18.3. Limits of other integer types */
 405
 406 /* ptrdiff_t limits */
 407 #undef PTRDIFF_MIN
 408 #undef PTRDIFF_MAX
 409 #define PTRDIFF_MIN  \
 410    _STDINT_MIN (1, @BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
 411 #define PTRDIFF_MAX  \
 412    _STDINT_MAX (1, @BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
 413
 414 /* sig_atomic_t limits */
 415 #undef SIG_ATOMIC_MIN
 416 #undef SIG_ATOMIC_MAX
 417 #define SIG_ATOMIC_MIN  \
 418    _STDINT_MIN (@HAVE_SIGNED_SIG_ATOMIC_T@, @BITSIZEOF_SIG_ATOMIC_T@, \
 419                 0@SIG_ATOMIC_T_SUFFIX@)
 420 #define SIG_ATOMIC_MAX  \
 421    _STDINT_MAX (@HAVE_SIGNED_SIG_ATOMIC_T@, @BITSIZEOF_SIG_ATOMIC_T@, \
 422                 0@SIG_ATOMIC_T_SUFFIX@)
 423
 424
 425 /* size_t limit */
 426 #undef SIZE_MAX
 427 #define SIZE_MAX  _STDINT_MAX (0, @BITSIZEOF_SIZE_T@, 0@SIZE_T_SUFFIX@)
 428
 429 /* wchar_t limits */
 430 #undef WCHAR_MIN
 431 #undef WCHAR_MAX
 432 #define WCHAR_MIN  \
 433    _STDINT_MIN (@HAVE_SIGNED_WCHAR_T@, @BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
 434 #define WCHAR_MAX  \
 435    _STDINT_MAX (@HAVE_SIGNED_WCHAR_T@, @BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
 436
 437 /* wint_t limits */
 438 #undef WINT_MIN
 439 #undef WINT_MAX
 440 #define WINT_MIN  \
 441    _STDINT_MIN (@HAVE_SIGNED_WINT_T@, @BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
 442 #define WINT_MAX  \
 443    _STDINT_MAX (@HAVE_SIGNED_WINT_T@, @BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
 444
 445 #endif /* !defined __cplusplus || defined __STDC_LIMIT_MACROS */
 446
 447 /* 7.18.4. Macros for integer constants */
 448
 449 #if ! defined __cplusplus || defined __STDC_CONSTANT_MACROS
 450
 451 /* 7.18.4.1. Macros for minimum-width integer constants */
 452 /* According to ISO C 99 Technical Corrigendum 1 */
 453
 454 /* Here we assume a standard architecture where the hardware integer
 455    types have 8, 16, 32, optionally 64 bits, and int is 32 bits.  */
 456
 457 #undef INT8_C
 458 #undef UINT8_C
 459 #define INT8_C(x) x
 460 #define UINT8_C(x) x
 461
 462 #undef INT16_C
 463 #undef UINT16_C
 464 #define INT16_C(x) x
 465 #define UINT16_C(x) x
 466
 467 #undef INT32_C
 468 #undef UINT32_C
 469 #define INT32_C(x) x
 470 #define UINT32_C(x) x ## U
 471
 472 #undef INT64_C
 473 #undef UINT64_C
 474 #if LONG_MAX >> 31 >> 31 == 1
 475 # define INT64_C(x) x##L
 476 #elif defined _MSC_VER
 477 # define INT64_C(x) x##i64
 478 #elif @HAVE_LONG_LONG_INT@
 479 # define INT64_C(x) x##LL
 480 #endif
 481 #if ULONG_MAX >> 31 >> 31 >> 1 == 1
 482 # define UINT64_C(x) x##UL
 483 #elif defined _MSC_VER
 484 # define UINT64_C(x) x##ui64
 485 #elif @HAVE_UNSIGNED_LONG_LONG_INT@
 486 # define UINT64_C(x) x##ULL
 487 #endif
 488
 489 /* 7.18.4.2. Macros for greatest-width integer constants */
 490
 491 #undef INTMAX_C
 492 #if @HAVE_LONG_LONG_INT@ && LONG_MAX >> 30 == 1
 493 # define INTMAX_C(x)   x##LL
 494 #elif defined GL_INT64_T
 495 # define INTMAX_C(x)   INT64_C(x)
 496 #else
 497 # define INTMAX_C(x)   x##L
 498 #endif
 499
 500 #undef UINTMAX_C
 501 #if @HAVE_UNSIGNED_LONG_LONG_INT@ && ULONG_MAX >> 31 == 1
 502 # define UINTMAX_C(x)  x##ULL
 503 #elif defined GL_UINT64_T
 504 # define UINTMAX_C(x)  UINT64_C(x)
 505 #else
 506 # define UINTMAX_C(x)  x##UL
 507 #endif
 508
 509 #endif /* !defined __cplusplus || defined __STDC_CONSTANT_MACROS */
 510
 511 #endif /* _GL_STDINT_H */
 512 #endif /* _GL_STDINT_H */