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stdint.h 整数类型

分类： LINUX

2011-03-14 21:10:25

root@ubuntu:/home/zhangbin# find /usr/  -name stdint.h
/usr/src/linux-headers-2.6.32-26/arch/arm/mach-bcmring/include/csp/stdint.h
/usr/include/c++/4.4/tr1/stdint.h
/usr/include/stdint.h

  1. root@ubuntu:/home/zhangbin# cat /usr/include/stdint.h
  2. /* Copyright (C) 1997,1998,1999,2000,2001,2006 Free Software Foundation, Inc.
  3.    This file is part of the GNU C Library.

  5.    The GNU C Library is free software; you can redistribute it and/or
  6.    modify it under the terms of the GNU Lesser General Public
  7.    License as published by the Free Software Foundation; either
  8.    version 2.1 of the License, or (at your option) any later version.

  10.    The GNU C Library 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 GNU
  13.    Lesser General Public License for more details.

  15.    You should have received a copy of the GNU Lesser General Public
  16.    License along with the GNU C Library; if not, write to the Free
  17.    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18.    02111-1307 USA. */

  20. /*
  21.  *    ISO C99: 7.18 Integer types  
  22.  */

  24. #ifndef _STDINT_H
  25. #define _STDINT_H    1

  27. #include <features.h>
  28. #include <bits/wchar.h>
  29. #include <bits/wordsize.h>

  31. /* Exact integral types. */

  33. /* Signed. */

  35. /* There is some amount of overlap with as known by inet code */
  36. #ifndef __int8_t_defined
  37. # define __int8_t_defined
  38. typedef signed char        int8_t;
  39. typedef short int        int16_t;
  40. typedef int            int32_t;
  41. # if __WORDSIZE == 64
  42. typedef long int        int64_t;
  43. # else
  44. __extension__
  45. typedef long long int        int64_t;
  46. # endif
  47. #endif

  49. /* Unsigned. */
  50. typedef unsigned char        uint8_t;
  51. typedef unsigned short int    uint16_t;
  52. #ifndef __uint32_t_defined
  53. typedef unsigned int        uint32_t;
  54. # define __uint32_t_defined
  55. #endif
  56. #if __WORDSIZE == 64
  57. typedef unsigned long int    uint64_t;
  58. #else
  59. __extension__
  60. typedef unsigned long long int    uint64_t;
  61. #endif


  64. /* Small types. */

  66. /* Signed. */
  67. typedef signed char        int_least8_t;
  68. typedef short int        int_least16_t;
  69. typedef int            int_least32_t;
  70. #if __WORDSIZE == 64
  71. typedef long int        int_least64_t;
  72. #else
  73. __extension__
  74. typedef long long int        int_least64_t;
  75. #endif

  77. /* Unsigned. */
  78. typedef unsigned char        uint_least8_t;
  79. typedef unsigned short int    uint_least16_t;
  80. typedef unsigned int        uint_least32_t;
  81. #if __WORDSIZE == 64
  82. typedef unsigned long int    uint_least64_t;
  83. #else
  84. __extension__
  85. typedef unsigned long long int    uint_least64_t;
  86. #endif


  89. /* Fast types. */

  91. /* Signed. */
  92. typedef signed char        int_fast8_t;
  93. #if __WORDSIZE == 64
  94. typedef long int        int_fast16_t;
  95. typedef long int        int_fast32_t;
  96. typedef long int        int_fast64_t;
  97. #else
  98. typedef int            int_fast16_t;
  99. typedef int            int_fast32_t;
  100. __extension__
  101. typedef long long int        int_fast64_t;
  102. #endif

  104. /* Unsigned. */
  105. typedef unsigned char        uint_fast8_t;
  106. #if __WORDSIZE == 64
  107. typedef unsigned long int    uint_fast16_t;
  108. typedef unsigned long int    uint_fast32_t;
  109. typedef unsigned long int    uint_fast64_t;
  110. #else
  111. typedef unsigned int        uint_fast16_t;
  112. typedef unsigned int        uint_fast32_t;
  113. __extension__
  114. typedef unsigned long long int    uint_fast64_t;
  115. #endif


  118. /* Types for `void *' pointers. */
  119. #if __WORDSIZE == 64
  120. # ifndef __intptr_t_defined
  121. typedef long int        intptr_t;
  122. # define __intptr_t_defined
  123. # endif
  124. typedef unsigned long int    uintptr_t;
  125. #else
  126. # ifndef __intptr_t_defined
  127. typedef int            intptr_t;
  128. # define __intptr_t_defined
  129. # endif
  130. typedef unsigned int        uintptr_t;
  131. #endif


  134. /* Largest integral types. */
  135. #if __WORDSIZE == 64
  136. typedef long int        intmax_t;
  137. typedef unsigned long int    uintmax_t;
  138. #else
  139. __extension__
  140. typedef long long int        intmax_t;
  141. __extension__
  142. typedef unsigned long long int    uintmax_t;
  143. #endif


  146. /* The ISO C99 standard specifies that in C++ implementations these
  147.    macros should only be defined if explicitly requested. */
  148. #if !defined __cplusplus || defined __STDC_LIMIT_MACROS

  150. # if __WORDSIZE == 64
  151. # define __INT64_C(c)    c ## L
  152. # define __UINT64_C(c)    c ## UL
  153. # else
  154. # define __INT64_C(c)    c ## LL
  155. # define __UINT64_C(c)    c ## ULL
  156. # endif

  158. /* Limits of integral types. */

  160. /* Minimum of signed integral types. */
  161. # define INT8_MIN        (-128)
  162. # define INT16_MIN        (-32767-1)
  163. # define INT32_MIN        (-2147483647-1)
  164. # define INT64_MIN        (-__INT64_C(9223372036854775807)-1)
  165. /* Maximum of signed integral types. */
  166. # define INT8_MAX        (127)
  167. # define INT16_MAX        (32767)
  168. # define INT32_MAX        (2147483647)
  169. # define INT64_MAX        (__INT64_C(9223372036854775807))

  171. /* Maximum of unsigned integral types. */
  172. # define UINT8_MAX        (255)
  173. # define UINT16_MAX        (65535)
  174. # define UINT32_MAX        (4294967295U)
  175. # define UINT64_MAX        (__UINT64_C(18446744073709551615))


  178. /* Minimum of signed integral types having a minimum size. */
  179. # define INT_LEAST8_MIN        (-128)
  180. # define INT_LEAST16_MIN    (-32767-1)
  181. # define INT_LEAST32_MIN    (-2147483647-1)
  182. # define INT_LEAST64_MIN    (-__INT64_C(9223372036854775807)-1)
  183. /* Maximum of signed integral types having a minimum size. */
  184. # define INT_LEAST8_MAX        (127)
  185. # define INT_LEAST16_MAX    (32767)
  186. # define INT_LEAST32_MAX    (2147483647)
  187. # define INT_LEAST64_MAX    (__INT64_C(9223372036854775807))

  189. /* Maximum of unsigned integral types having a minimum size. */
  190. # define UINT_LEAST8_MAX    (255)
  191. # define UINT_LEAST16_MAX    (65535)
  192. # define UINT_LEAST32_MAX    (4294967295U)
  193. # define UINT_LEAST64_MAX    (__UINT64_C(18446744073709551615))


  196. /* Minimum of fast signed integral types having a minimum size. */
  197. # define INT_FAST8_MIN        (-128)
  198. # if __WORDSIZE == 64
  199. # define INT_FAST16_MIN    (-9223372036854775807L-1)
  200. # define INT_FAST32_MIN    (-9223372036854775807L-1)
  201. # else
  202. # define INT_FAST16_MIN    (-2147483647-1)
  203. # define INT_FAST32_MIN    (-2147483647-1)
  204. # endif
  205. # define INT_FAST64_MIN        (-__INT64_C(9223372036854775807)-1)
  206. /* Maximum of fast signed integral types having a minimum size. */
  207. # define INT_FAST8_MAX        (127)
  208. # if __WORDSIZE == 64
  209. # define INT_FAST16_MAX    (9223372036854775807L)
  210. # define INT_FAST32_MAX    (9223372036854775807L)
  211. # else
  212. # define INT_FAST16_MAX    (2147483647)
  213. # define INT_FAST32_MAX    (2147483647)
  214. # endif
  215. # define INT_FAST64_MAX        (__INT64_C(9223372036854775807))

  217. /* Maximum of fast unsigned integral types having a minimum size. */
  218. # define UINT_FAST8_MAX        (255)
  219. # if __WORDSIZE == 64
  220. # define UINT_FAST16_MAX    (18446744073709551615UL)
  221. # define UINT_FAST32_MAX    (18446744073709551615UL)
  222. # else
  223. # define UINT_FAST16_MAX    (4294967295U)
  224. # define UINT_FAST32_MAX    (4294967295U)
  225. # endif
  226. # define UINT_FAST64_MAX    (__UINT64_C(18446744073709551615))


  229. /* Values to test for integral types holding `void *' pointer. */
  230. # if __WORDSIZE == 64
  231. # define INTPTR_MIN        (-9223372036854775807L-1)
  232. # define INTPTR_MAX        (9223372036854775807L)
  233. # define UINTPTR_MAX        (18446744073709551615UL)
  234. # else
  235. # define INTPTR_MIN        (-2147483647-1)
  236. # define INTPTR_MAX        (2147483647)
  237. # define UINTPTR_MAX        (4294967295U)
  238. # endif


  241. /* Minimum for largest signed integral type. */
  242. # define INTMAX_MIN        (-__INT64_C(9223372036854775807)-1)
  243. /* Maximum for largest signed integral type. */
  244. # define INTMAX_MAX        (__INT64_C(9223372036854775807))

  246. /* Maximum for largest unsigned integral type. */
  247. # define UINTMAX_MAX        (__UINT64_C(18446744073709551615))


  250. /* Limits of other integer types. */

  252. /* Limits of `ptrdiff_t' type. */
  253. # if __WORDSIZE == 64
  254. # define PTRDIFF_MIN        (-9223372036854775807L-1)
  255. # define PTRDIFF_MAX        (9223372036854775807L)
  256. # else
  257. # define PTRDIFF_MIN        (-2147483647-1)
  258. # define PTRDIFF_MAX        (2147483647)
  259. # endif

  261. /* Limits of `sig_atomic_t'. */
  262. # define SIG_ATOMIC_MIN        (-2147483647-1)
  263. # define SIG_ATOMIC_MAX        (2147483647)

  265. /* Limit of `size_t' type. */
  266. # if __WORDSIZE == 64
  267. # define SIZE_MAX        (18446744073709551615UL)
  268. # else
  269. # define SIZE_MAX        (4294967295U)
  270. # endif

  272. /* Limits of `wchar_t'. */
  273. # ifndef WCHAR_MIN
  274. /* These constants might also be defined in . */
  275. # define WCHAR_MIN        __WCHAR_MIN
  276. # define WCHAR_MAX        __WCHAR_MAX
  277. # endif

  279. /* Limits of `wint_t'. */
  280. # define WINT_MIN        (0u)
  281. # define WINT_MAX        (4294967295u)

  283. #endif    /* C++ && limit macros */


  286. /* The ISO C99 standard specifies that in C++ implementations these
  287.    should only be defined if explicitly requested. */
  288. #if !defined __cplusplus || defined __STDC_CONSTANT_MACROS

  290. /* Signed. */
  291. # define INT8_C(c)    c
  292. # define INT16_C(c)    c
  293. # define INT32_C(c)    c
  294. # if __WORDSIZE == 64
  295. # define INT64_C(c)    c ## L
  296. # else
  297. # define INT64_C(c)    c ## LL
  298. # endif

  300. /* Unsigned. */
  301. # define UINT8_C(c)    c
  302. # define UINT16_C(c)    c
  303. # define UINT32_C(c)    c ## U
  304. # if __WORDSIZE == 64
  305. # define UINT64_C(c)    c ## UL
  306. # else
  307. # define UINT64_C(c)    c ## ULL
  308. # endif

  310. /* Maximal type. */
  311. # if __WORDSIZE == 64
  312. # define INTMAX_C(c)    c ## L
  313. # define UINTMAX_C(c)    c ## UL
  314. # else
  315. # define INTMAX_C(c)    c ## LL
  316. # define UINTMAX_C(c)    c ## ULL
  317. # endif

  319. #endif    /* C++ && constant macros */

  321. #endif /* stdint.h */
  322. root@ubuntu:/home/zhangbin#
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