gl/stdint_.h

   1 /* Copyright (C) 2001-2002, 2004-2006 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 #ifndef _GL_STDINT_H
  20 #define _GL_STDINT_H
  21
  22 /*
  23  * ISO C 99 <stdint.h> for platforms that lack it.
  24  * <http://www.opengroup.org/susv3xbd/stdint.h.html>
  25  */
  26
  27 /* Get those types that are already defined in other system include
  28    files, so that we can "#define int8_t signed char" below without
  29    worrying about a later system include file containing a "typedef
  30    signed char int8_t;" that will get messed up by our macro.  Our
  31    macros should all be consistent with the system versions, except
  32    for the "fast" types and macros, which we recommend against using
  33    in public interfaces due to compiler differences.  */
  34
  35 #if @HAVE_STDINT_H@
  36 # if defined __sgi && ! defined __c99
  37    /* Bypass IRIX's <stdint.h> if in C89 mode, since it merely annoys users
  38       with "This header file is to be used only for c99 mode compilations"
  39       diagnostics.  */
  40 #  define __STDINT_H__
  41 # endif
  42   /* Other systems may have an incomplete or buggy <stdint.h>.
  43      Include it before <inttypes.h>, since any "#include <stdint.h>"
  44      in <inttypes.h> would reinclude us, skipping our contents because
  45      _GL_STDINT_H is defined.  */
  46 # include @ABSOLUTE_STDINT_H@
  47 #endif
  48
  49 /* <sys/types.h> defines some of the stdint.h types as well, on glibc,
  50    IRIX 6.5, and OpenBSD 3.8 (via <machine/types.h>).
  51    MacOS X 10.4.6 <sys/types.h> includes <stdint.h> (which is us), but
  52    relies on the system <stdint.h> definitions, so include
  53    <sys/types.h> after @ABSOLUTE_STDINT_H@.  */
  54 #if @HAVE_SYS_TYPES_H@
  55 # include <sys/types.h>
  56 #endif
  57
  58 /* Get LONG_MIN, LONG_MAX, ULONG_MAX.  */
  59 #include <limits.h>
  60
  61 #if @HAVE_INTTYPES_H@
  62   /* In OpenBSD 3.8, <inttypes.h> includes <machine/types.h>, which defines
  63      int{8,16,32,64}_t, uint{8,16,32,64}_t and __BIT_TYPES_DEFINED__.
  64      <inttypes.h> also defines intptr_t and uintptr_t.  */
  65 # define _GL_JUST_INCLUDE_ABSOLUTE_INTTYPES_H
  66 # include <inttypes.h>
  67 # undef _GL_JUST_INCLUDE_ABSOLUTE_INTTYPES_H
  68 #elif @HAVE_SYS_INTTYPES_H@
  69   /* Solaris 7 <sys/inttypes.h> has the types except the *_fast*_t types, and
  70      the macros except for *_FAST*_*, INTPTR_MIN, PTRDIFF_MIN, PTRDIFF_MAX.  */
  71 # include <sys/inttypes.h>
  72 #endif
  73
  74 #if @HAVE_SYS_BITYPES_H@ && ! defined __BIT_TYPES_DEFINED__
  75   /* Linux libc4 >= 4.6.7 and libc5 have a <sys/bitypes.h> that defines
  76      int{8,16,32,64}_t and __BIT_TYPES_DEFINED__.  In libc5 >= 5.2.2 it is
  77      included by <sys/types.h>.  */
  78 # include <sys/bitypes.h>
  79 #endif
  80
  81 #if ! defined __cplusplus || defined __STDC_CONSTANT_MACROS
  82
  83 /* Get WCHAR_MIN, WCHAR_MAX.  */
  84 # if @HAVE_WCHAR_H@ && ! (defined WCHAR_MIN && defined WCHAR_MAX)
  85    /* BSD/OS 4.1 has a bug: <stdio.h> and <time.h> must be included before
  86       <wchar.h>.  */
  87 #  include <stdio.h>
  88 #  include <time.h>
  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 #undef int64_t
 127 #if LONG_MAX >> 31 >> 31 == 1
 128 # define int64_t long int
 129 #elif defined _MSC_VER
 130 # define int64_t __int64
 131 #elif @HAVE_LONG_LONG_INT@
 132 # define int64_t long long int
 133 #endif
 134
 135 #undef uint64_t
 136 #if ULONG_MAX >> 31 >> 31 >> 1 == 1
 137 # define uint64_t unsigned long int
 138 #elif defined _MSC_VER
 139 # define uint64_t unsigned __int64
 140 #elif @HAVE_UNSIGNED_LONG_LONG_INT@
 141 # define uint64_t unsigned long long int
 142 #endif
 143
 144 /* Avoid collision with Solaris 2.5.1 <pthread.h> etc.  */
 145 #define _UINT8_T
 146 #define _UINT32_T
 147 #define _UINT64_T
 148
 149
 150 /* 7.18.1.2. Minimum-width integer types */
 151
 152 /* Here we assume a standard architecture where the hardware integer
 153    types have 8, 16, 32, optionally 64 bits. Therefore the leastN_t types
 154    are the same as the corresponding N_t types.  */
 155
 156 #undef int_least8_t
 157 #undef uint_least8_t
 158 #undef int_least16_t
 159 #undef uint_least16_t
 160 #undef int_least32_t
 161 #undef uint_least32_t
 162 #undef int_least64_t
 163 #undef uint_least64_t
 164 #define int_least8_t int8_t
 165 #define uint_least8_t uint8_t
 166 #define int_least16_t int16_t
 167 #define uint_least16_t uint16_t
 168 #define int_least32_t int32_t
 169 #define uint_least32_t uint32_t
 170 #ifdef int64_t
 171 # define int_least64_t int64_t
 172 #endif
 173 #ifdef uint64_t
 174 # define uint_least64_t uint64_t
 175 #endif
 176
 177 /* 7.18.1.3. Fastest minimum-width integer types */
 178
 179 /* Note: Other <stdint.h> substitutes may define these types differently.
 180    It is not recommended to use these types in public header files. */
 181
 182 /* Here we assume a standard architecture where the hardware integer
 183    types have 8, 16, 32, optionally 64 bits. Therefore the fastN_t types
 184    are taken from the same list of types.  Assume that 'long int'
 185    is fast enough for all narrower integers.  */
 186
 187 #undef int_fast8_t
 188 #undef uint_fast8_t
 189 #undef int_fast16_t
 190 #undef uint_fast16_t
 191 #undef int_fast32_t
 192 #undef uint_fast32_t
 193 #undef int_fast64_t
 194 #undef uint_fast64_t
 195 #define int_fast8_t long int
 196 #define uint_fast8_t unsigned int_fast8_t
 197 #define int_fast16_t long int
 198 #define uint_fast16_t unsigned int_fast16_t
 199 #define int_fast32_t long int
 200 #define uint_fast32_t unsigned int_fast32_t
 201 #ifdef int64_t
 202 # define int_fast64_t int64_t
 203 #endif
 204 #ifdef uint64_t
 205 # define uint_fast64_t uint64_t
 206 #endif
 207
 208 /* 7.18.1.4. Integer types capable of holding object pointers */
 209
 210 #undef intptr_t
 211 #undef uintptr_t
 212 #define intptr_t long int
 213 #define uintptr_t unsigned long int
 214
 215 /* 7.18.1.5. Greatest-width integer types */
 216
 217 /* Note: These types are compiler dependent. It may be unwise to use them in
 218    public header files. */
 219
 220 #undef intmax_t
 221 #if @HAVE_LONG_LONG_INT@ && LONG_MAX >> 30 == 1
 222 # define intmax_t long long int
 223 #elif defined int64_t
 224 # define intmax_t int64_t
 225 #else
 226 # define intmax_t long int
 227 #endif
 228
 229 #undef uintmax_t
 230 #if @HAVE_UNSIGNED_LONG_LONG_INT@ && ULONG_MAX >> 31 == 1
 231 # define uintmax_t unsigned long long int
 232 #elif defined int64_t
 233 # define uintmax_t uint64_t
 234 #else
 235 # define uintmax_t unsigned long int
 236 #endif
 237
 238 /* 7.18.2. Limits of specified-width integer types */
 239
 240 #if ! defined __cplusplus || defined __STDC_LIMIT_MACROS
 241
 242 /* 7.18.2.1. Limits of exact-width integer types */
 243
 244 /* Here we assume a standard architecture where the hardware integer
 245    types have 8, 16, 32, optionally 64 bits.  */
 246
 247 #undef INT8_MIN
 248 #undef INT8_MAX
 249 #undef UINT8_MAX
 250 #define INT8_MIN  (~ INT8_MAX)
 251 #define INT8_MAX  127
 252 #define UINT8_MAX  255
 253
 254 #undef INT16_MIN
 255 #undef INT16_MAX
 256 #undef UINT16_MAX
 257 #define INT16_MIN  (~ INT16_MAX)
 258 #define INT16_MAX  32767
 259 #define UINT16_MAX  65535
 260
 261 #undef INT32_MIN
 262 #undef INT32_MAX
 263 #undef UINT32_MAX
 264 #define INT32_MIN  (~ INT32_MAX)
 265 #define INT32_MAX  2147483647
 266 #define UINT32_MAX  4294967295U
 267
 268 #undef INT64_MIN
 269 #undef INT64_MAX
 270 #ifdef int64_t
 271 # define INT64_MIN  (~ INT64_MAX)
 272 # define INT64_MAX  INTMAX_C (9223372036854775807)
 273 #endif
 274
 275 #undef UINT64_MAX
 276 #ifdef uint64_t
 277 # define UINT64_MAX  UINTMAX_C (18446744073709551615)
 278 #endif
 279
 280 /* 7.18.2.2. Limits of minimum-width integer types */
 281
 282 /* Here we assume a standard architecture where the hardware integer
 283    types have 8, 16, 32, optionally 64 bits. Therefore the leastN_t types
 284    are the same as the corresponding N_t types.  */
 285
 286 #undef INT_LEAST8_MIN
 287 #undef INT_LEAST8_MAX
 288 #undef UINT_LEAST8_MAX
 289 #define INT_LEAST8_MIN  INT8_MIN
 290 #define INT_LEAST8_MAX  INT8_MAX
 291 #define UINT_LEAST8_MAX  UINT8_MAX
 292
 293 #undef INT_LEAST16_MIN
 294 #undef INT_LEAST16_MAX
 295 #undef UINT_LEAST16_MAX
 296 #define INT_LEAST16_MIN  INT16_MIN
 297 #define INT_LEAST16_MAX  INT16_MAX
 298 #define UINT_LEAST16_MAX  UINT16_MAX
 299
 300 #undef INT_LEAST32_MIN
 301 #undef INT_LEAST32_MAX
 302 #undef UINT_LEAST32_MAX
 303 #define INT_LEAST32_MIN  INT32_MIN
 304 #define INT_LEAST32_MAX  INT32_MAX
 305 #define UINT_LEAST32_MAX  UINT32_MAX
 306
 307 #undef INT_LEAST64_MIN
 308 #undef INT_LEAST64_MAX
 309 #ifdef int64_t
 310 # define INT_LEAST64_MIN  INT64_MIN
 311 # define INT_LEAST64_MAX  INT64_MAX
 312 #endif
 313
 314 #undef UINT_LEAST64_MAX
 315 #ifdef uint64_t
 316 # define UINT_LEAST64_MAX  UINT64_MAX
 317 #endif
 318
 319 /* 7.18.2.3. Limits of fastest minimum-width integer types */
 320
 321 /* Here we assume a standard architecture where the hardware integer
 322    types have 8, 16, 32, optionally 64 bits. Therefore the fastN_t types
 323    are taken from the same list of types.  */
 324
 325 #undef INT_FAST8_MIN
 326 #undef INT_FAST8_MAX
 327 #undef UINT_FAST8_MAX
 328 #define INT_FAST8_MIN  LONG_MIN
 329 #define INT_FAST8_MAX  LONG_MAX
 330 #define UINT_FAST8_MAX  ULONG_MAX
 331
 332 #undef INT_FAST16_MIN
 333 #undef INT_FAST16_MAX
 334 #undef UINT_FAST16_MAX
 335 #define INT_FAST16_MIN  LONG_MIN
 336 #define INT_FAST16_MAX  LONG_MAX
 337 #define UINT_FAST16_MAX  ULONG_MAX
 338
 339 #undef INT_FAST32_MIN
 340 #undef INT_FAST32_MAX
 341 #undef UINT_FAST32_MAX
 342 #define INT_FAST32_MIN  LONG_MIN
 343 #define INT_FAST32_MAX  LONG_MAX
 344 #define UINT_FAST32_MAX  ULONG_MAX
 345
 346 #undef INT_FAST64_MIN
 347 #undef INT_FAST64_MAX
 348 #ifdef int64_t
 349 # define INT_FAST64_MIN  INT64_MIN
 350 # define INT_FAST64_MAX  INT64_MAX
 351 #endif
 352
 353 #undef UINT_FAST64_MAX
 354 #ifdef uint64_t
 355 # define UINT_FAST64_MAX  UINT64_MAX
 356 #endif
 357
 358 /* 7.18.2.4. Limits of integer types capable of holding object pointers */
 359
 360 #undef INTPTR_MIN
 361 #undef INTPTR_MAX
 362 #undef UINTPTR_MAX
 363 #define INTPTR_MIN  LONG_MIN
 364 #define INTPTR_MAX  LONG_MAX
 365 #define UINTPTR_MAX  ULONG_MAX
 366
 367 /* 7.18.2.5. Limits of greatest-width integer types */
 368
 369 #undef INTMAX_MIN
 370 #undef INTMAX_MAX
 371 #define INTMAX_MIN  (~ INTMAX_MAX)
 372 #ifdef INT64_MAX
 373 # define INTMAX_MAX  INT64_MAX
 374 #else
 375 # define INTMAX_MAX  INT32_MAX
 376 #endif
 377
 378 #undef UINTMAX_MAX
 379 #ifdef UINT64_MAX
 380 # define UINTMAX_MAX  UINT64_MAX
 381 #else
 382 # define UINTMAX_MAX  UINT32_MAX
 383 #endif
 384
 385 /* 7.18.3. Limits of other integer types */
 386
 387 /* ptrdiff_t limits */
 388 #undef PTRDIFF_MIN
 389 #undef PTRDIFF_MAX
 390 #define PTRDIFF_MIN  \
 391    _STDINT_MIN (1, @BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
 392 #define PTRDIFF_MAX  \
 393    _STDINT_MAX (1, @BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
 394
 395 /* sig_atomic_t limits */
 396 #undef SIG_ATOMIC_MIN
 397 #undef SIG_ATOMIC_MAX
 398 #define SIG_ATOMIC_MIN  \
 399    _STDINT_MIN (@HAVE_SIGNED_SIG_ATOMIC_T@, @BITSIZEOF_SIG_ATOMIC_T@, \
 400                 0@SIG_ATOMIC_T_SUFFIX@)
 401 #define SIG_ATOMIC_MAX  \
 402    _STDINT_MAX (@HAVE_SIGNED_SIG_ATOMIC_T@, @BITSIZEOF_SIG_ATOMIC_T@, \
 403                 0@SIG_ATOMIC_T_SUFFIX@)
 404
 405
 406 /* size_t limit */
 407 #undef SIZE_MAX
 408 #define SIZE_MAX  _STDINT_MAX (0, @BITSIZEOF_SIZE_T@, 0@SIZE_T_SUFFIX@)
 409
 410 /* wchar_t limits */
 411 #undef WCHAR_MIN
 412 #undef WCHAR_MAX
 413 #define WCHAR_MIN  \
 414    _STDINT_MIN (@HAVE_SIGNED_WCHAR_T@, @BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
 415 #define WCHAR_MAX  \
 416    _STDINT_MAX (@HAVE_SIGNED_WCHAR_T@, @BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
 417
 418 /* wint_t limits */
 419 #undef WINT_MIN
 420 #undef WINT_MAX
 421 #define WINT_MIN  \
 422    _STDINT_MIN (@HAVE_SIGNED_WINT_T@, @BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
 423 #define WINT_MAX  \
 424    _STDINT_MAX (@HAVE_SIGNED_WINT_T@, @BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
 425
 426 #endif /* !defined __cplusplus || defined __STDC_LIMIT_MACROS */
 427
 428 /* 7.18.4. Macros for integer constants */
 429
 430 #if ! defined __cplusplus || defined __STDC_CONSTANT_MACROS
 431
 432 /* 7.18.4.1. Macros for minimum-width integer constants */
 433 /* According to ISO C 99 Technical Corrigendum 1 */
 434
 435 /* Here we assume a standard architecture where the hardware integer
 436    types have 8, 16, 32, optionally 64 bits, and int is 32 bits.  */
 437
 438 #undef INT8_C
 439 #undef UINT8_C
 440 #define INT8_C(x) x
 441 #define UINT8_C(x) x
 442
 443 #undef INT16_C
 444 #undef UINT16_C
 445 #define INT16_C(x) x
 446 #define UINT16_C(x) x
 447
 448 #undef INT32_C
 449 #undef UINT32_C
 450 #define INT32_C(x) x
 451 #define UINT32_C(x) x ## U
 452
 453 #undef INT64_C
 454 #undef UINT64_C
 455 #if LONG_MAX >> 31 >> 31 == 1
 456 # define INT64_C(x) x##L
 457 #elif defined _MSC_VER
 458 # define INT64_C(x) x##i64
 459 #elif @HAVE_LONG_LONG_INT@
 460 # define INT64_C(x) x##LL
 461 #endif
 462 #if ULONG_MAX >> 31 >> 31 >> 1 == 1
 463 # define UINT64_C(x) x##UL
 464 #elif defined _MSC_VER
 465 # define UINT64_C(x) x##ui64
 466 #elif @HAVE_UNSIGNED_LONG_LONG_INT@
 467 # define UINT64_C(x) x##ULL
 468 #endif
 469
 470 /* 7.18.4.2. Macros for greatest-width integer constants */
 471
 472 #undef INTMAX_C
 473 #if @HAVE_LONG_LONG_INT@ && LONG_MAX >> 30 == 1
 474 # define INTMAX_C(x)   x##LL
 475 #elif defined int64_t
 476 # define INTMAX_C(x)   INT64_C(x)
 477 #else
 478 # define INTMAX_C(x)   x##L
 479 #endif
 480
 481 #undef UINTMAX_C
 482 #if @HAVE_UNSIGNED_LONG_LONG_INT@ && ULONG_MAX >> 31 == 1
 483 # define UINTMAX_C(x)  x##ULL
 484 #elif defined uint64_t
 485 # define UINTMAX_C(x)  UINT64_C(x)
 486 #else
 487 # define UINTMAX_C(x)  x##UL
 488 #endif
 489
 490 #endif /* !defined __cplusplus || defined __STDC_CONSTANT_MACROS */
 491
 492 #endif /* _GL_STDINT_H */