http://blog.chinaunix.net/uid-26588712-id-3068151.html

c++ 数据类型
按照posix标准，一般整型对应的*_t类型为：
1字节     uint8_t
2字节     uint16_t
4字节     uint32_t
8字节     uint64_t

  1. /* Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, write to the Free
  13. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  14. 02111-1307 USA. */
  15. /*
  16. * ISO C99: 7.18 Integer types <stdint.h>
  17. */
  18. #ifndef _STDINT_H
  19. #define _STDINT_H 1
  20. #include <features.h>
  21. #include <bits/wchar.h>
  22. #include <bits/wordsize.h>
  23. /* Exact integral types. */
  24. /* Signed. */
  25. /* There is some amount of overlap with <sys/types.h> as known by inet code */
  26. #ifndef __int8_t_defined
  27. # define __int8_t_defined
  28. typedef signed char int8_t;
  29. typedef short int int16_t;
  30. typedef int int32_t;
  31. # if __WORDSIZE == 64
  32. typedef long int int64_t;
  33. # else
  34. __extension__
  35. typedef long long int int64_t;
  36. # endif
  37. #endif
  38. /* Unsigned. */
  39. typedef unsigned char uint8_t;
  40. typedef unsigned short int uint16_t;
  41. #ifndef __uint32_t_defined
  42. typedef unsigned int uint32_t;
  43. # define __uint32_t_defined
  44. #endif
  45. #if __WORDSIZE == 64
  46. typedef unsigned long int uint64_t;
  47. #else
  48. __extension__
  49. typedef unsigned long long int uint64_t;
  50. #endif
  51. /* Small types. */
  52. /* Signed. */
  53. typedef signed char int_least8_t;
  54. typedef short int int_least16_t;
  55. typedef int int_least32_t;
  56. #if __WORDSIZE == 64
  57. typedef long int int_least64_t;
  58. #else
  59. __extension__
  60. typedef long long int int_least64_t;
  61. #endif
  62. /* Unsigned. */
  63. typedef unsigned char uint_least8_t;
  64. typedef unsigned short int uint_least16_t;
  65. typedef unsigned int uint_least32_t;
  66. #if __WORDSIZE == 64
  67. typedef unsigned long int uint_least64_t;
  68. #else
  69. __extension__
  70. typedef unsigned long long int uint_least64_t;
  71. #endif
  72. /* Fast types. */
  73. /* Signed. */
  74. typedef signed char int_fast8_t;
  75. #if __WORDSIZE == 64
  76. typedef long int int_fast16_t;
  77. typedef long int int_fast32_t;
  78. typedef long int int_fast64_t;
  79. #else
  80. typedef int int_fast16_t;
  81. typedef int int_fast32_t;
  82. __extension__
  83. typedef long long int int_fast64_t;
  84. #endif
  85. /* Unsigned. */
  86. typedef unsigned char uint_fast8_t;
  87. #if __WORDSIZE == 64
  88. typedef unsigned long int uint_fast16_t;
  89. typedef unsigned long int uint_fast32_t;
  90. typedef unsigned long int uint_fast64_t;
  91. #else
  92. typedef unsigned int uint_fast16_t;
  93. typedef unsigned int uint_fast32_t;
  94. __extension__
  95. typedef unsigned long long int uint_fast64_t;
  96. #endif
  97. /* Types for `void *' pointers. */
  98. #if __WORDSIZE == 64
  99. # ifndef __intptr_t_defined
  100. typedef long int intptr_t;
  101. # define __intptr_t_defined
  102. # endif
  103. typedef unsigned long int uintptr_t;
  104. #else
  105. # ifndef __intptr_t_defined
  106. typedef int intptr_t;
  107. # define __intptr_t_defined
  108. # endif
  109. typedef unsigned int uintptr_t;
  110. #endif
  111. /* Largest integral types. */
  112. #if __WORDSIZE == 64
  113. typedef long int intmax_t;
  114. typedef unsigned long int uintmax_t;
  115. #else
  116. __extension__
  117. typedef long long int intmax_t;
  118. __extension__
  119. typedef unsigned long long int uintmax_t;
  120. #endif
  121. /* The ISO C99 standard specifies that in C++ implementations these
  122. macros should only be defined if explicitly requested. */
  123. #if !defined __cplusplus || defined __STDC_LIMIT_MACROS
  124. # if __WORDSIZE == 64
  125. # define __INT64_C(c) c ## L
  126. # define __UINT64_C(c) c ## UL
  127. # else
  128. # define __INT64_C(c) c ## LL
  129. # define __UINT64_C(c) c ## ULL
  130. # endif
  131. /* Limits of integral types. */
  132. /* Minimum of signed integral types. */
  133. # define INT8_MIN (-128)
  134. # define INT16_MIN (-32767-1)
  135. # define INT32_MIN (-2147483647-1)
  136. # define INT64_MIN (-__INT64_C(9223372036854775807)-1)
  137. /* Maximum of signed integral types. */
  138. # define INT8_MAX (127)
  139. # define INT16_MAX (32767)
  140. # define INT32_MAX (2147483647)
  141. # define INT64_MAX (__INT64_C(9223372036854775807))
  142. /* Maximum of unsigned integral types. */
  143. # define UINT8_MAX (255)
  144. # define UINT16_MAX (65535)
  145. # define UINT32_MAX (4294967295U)
  146. # define UINT64_MAX (__UINT64_C(18446744073709551615))
  147. /* Minimum of signed integral types having a minimum size. */
  148. # define INT_LEAST8_MIN (-128)
  149. # define INT_LEAST16_MIN (-32767-1)
  150. # define INT_LEAST32_MIN (-2147483647-1)
  151. # define INT_LEAST64_MIN (-__INT64_C(9223372036854775807)-1)
  152. /* Maximum of signed integral types having a minimum size. */
  153. # define INT_LEAST8_MAX (127)
  154. # define INT_LEAST16_MAX (32767)
  155. # define INT_LEAST32_MAX (2147483647)
  156. # define INT_LEAST64_MAX (__INT64_C(9223372036854775807))
  157. /* Maximum of unsigned integral types having a minimum size. */
  158. # define UINT_LEAST8_MAX (255)
  159. # define UINT_LEAST16_MAX (65535)
  160. # define UINT_LEAST32_MAX (4294967295U)
  161. # define UINT_LEAST64_MAX (__UINT64_C(18446744073709551615))
  162. /* Minimum of fast signed integral types having a minimum size. */
  163. # define INT_FAST8_MIN (-128)
  164. # if __WORDSIZE == 64
  165. # define INT_FAST16_MIN (-9223372036854775807L-1)
  166. # define INT_FAST32_MIN (-9223372036854775807L-1)
  167. # else
  168. # define INT_FAST16_MIN (-2147483647-1)
  169. # define INT_FAST32_MIN (-2147483647-1)
  170. # endif
  171. # define INT_FAST64_MIN (-__INT64_C(9223372036854775807)-1)
  172. /* Maximum of fast signed integral types having a minimum size. */
  173. # define INT_FAST8_MAX (127)
  174. # if __WORDSIZE == 64
  175. # define INT_FAST16_MAX (9223372036854775807L)
  176. # define INT_FAST32_MAX (9223372036854775807L)
  177. # else
  178. # define INT_FAST16_MAX (2147483647)
  179. # define INT_FAST32_MAX (2147483647)
  180. # endif
  181. # define INT_FAST64_MAX (__INT64_C(9223372036854775807))
  182. /* Maximum of fast unsigned integral types having a minimum size. */
  183. # define UINT_FAST8_MAX (255)
  184. # if __WORDSIZE == 64
  185. # define UINT_FAST16_MAX (18446744073709551615UL)
  186. # define UINT_FAST32_MAX (18446744073709551615UL)
  187. # else
  188. # define UINT_FAST16_MAX (4294967295U)
  189. # define UINT_FAST32_MAX (4294967295U)
  190. # endif
  191. # define UINT_FAST64_MAX (__UINT64_C(18446744073709551615))
  192. /* Values to test for integral types holding `void *' pointer. */
  193. # if __WORDSIZE == 64
  194. # define INTPTR_MIN (-9223372036854775807L-1)
  195. # define INTPTR_MAX (9223372036854775807L)
  196. # define UINTPTR_MAX (18446744073709551615UL)
  197. # else
  198. # define INTPTR_MIN (-2147483647-1)
  199. # define INTPTR_MAX (2147483647)
  200. # define UINTPTR_MAX (4294967295U)
  201. # endif
  202. /* Minimum for largest signed integral type. */
  203. # define INTMAX_MIN (-__INT64_C(9223372036854775807)-1)
  204. /* Maximum for largest signed integral type. */
  205. # define INTMAX_MAX (__INT64_C(9223372036854775807))
  206. /* Maximum for largest unsigned integral type. */
  207. # define UINTMAX_MAX (__UINT64_C(18446744073709551615))
  208. /* Limits of other integer types. */
  209. /* Limits of `ptrdiff_t' type. */
  210. # if __WORDSIZE == 64
  211. # define PTRDIFF_MIN (-9223372036854775807L-1)
  212. # define PTRDIFF_MAX (9223372036854775807L)
  213. # else
  214. # define PTRDIFF_MIN (-2147483647-1)
  215. # define PTRDIFF_MAX (2147483647)
  216. # endif
  217. /* Limits of `sig_atomic_t'. */
  218. # define SIG_ATOMIC_MIN (-2147483647-1)
  219. # define SIG_ATOMIC_MAX (2147483647)
  220. /* Limit of `size_t' type. */
  221. # if __WORDSIZE == 64
  222. # define SIZE_MAX (18446744073709551615UL)
  223. # else
  224. # define SIZE_MAX (4294967295U)
  225. # endif
  226. /* Limits of `wchar_t'. */
  227. # ifndef WCHAR_MIN
  228. /* These constants might also be defined in <wchar.h>. */
  229. # define WCHAR_MIN __WCHAR_MIN
  230. # define WCHAR_MAX __WCHAR_MAX
  231. # endif
  232. /* Limits of `wint_t'. */
  233. # define WINT_MIN (0u)
  234. # define WINT_MAX (4294967295u)
  235. #endif /* C++ && limit macros */
  236. /* The ISO C99 standard specifies that in C++ implementations these
  237. should only be defined if explicitly requested. */
  238. #if !defined __cplusplus || defined __STDC_CONSTANT_MACROS
  239. /* Signed. */
  240. # define INT8_C(c) c
  241. # define INT16_C(c) c
  242. # define INT32_C(c) c
  243. # if __WORDSIZE == 64
  244. # define INT64_C(c) c ## L
  245. # else
  246. # define INT64_C(c) c ## LL
  247. # endif
  248. /* Unsigned. */
  249. # define UINT8_C(c) c ## U
  250. # define UINT16_C(c) c ## U
  251. # define UINT32_C(c) c ## U
  252. # if __WORDSIZE == 64
  253. # define UINT64_C(c) c ## UL
  254. # else
  255. # define UINT64_C(c) c ## ULL
  256. # endif
  257. /* Maximal type. */
  258. # if __WORDSIZE == 64
  259. # define INTMAX_C(c) c ## L
  260. # define UINTMAX_C(c) c ## UL
  261. # else
  262. # define INTMAX_C(c) c ## LL
  263. # define UINTMAX_C(c) c ## ULL
  264. # endif
  265. #endif /* C++ && constant macros */
  266. #endif /* stdint.h */

stdint.h 文件 int8_t uint8_t int16_t uint16_t的更多相关文章

  1. 有关stdint.h 文件

    有关stdint.h 文件 Google C++编程规范的P25页有如下叙述: <stdint.h> 定义了 int16_t . uint32_t . int64_t 等整型,在需要确定大 ...

  2. 在windows下使用pip安装python包遇到缺失stdint.h文件的错误

    今天在windows上使用pip安装一个python包python-lzf时遇到如下的错误: fatal error C1083: Cannot open include file: 'stdint. ...

  3. fatal error C1083:无法打开包括文件:“stdint.h”: No such file or directory解决方案

    stdint.h文件是C99的标准头文件,默认情况下VC是不支持的,所以在使用过程中肯定会碰到 "No such file or directory"的问题. 解决办法 1.从网盘 ...

  4. freeRTOSConfig.h文件对FreeRTOS进行系统配置

    FreeRTOS内核是高度可定制的,使用配置文件FreeRTOSConfig.h进行定制.每个FreeRTOS应用都必须包含这个头文件,用户根据实际应用来裁剪定制FreeRTOS内核.这个配置文件是针 ...

  5. fatal error C1083: 无法打开包括文件:“stdint.h”: No such file or directory

    stdint.h是c99标准的头文件,vc不支持,所以肯定会提示“No such file or directory”的. stdint.h是C99的标准,主要用于统一跨平台数据定义. MSVC中不带 ...

  6. 与平台无关的类型,int8_t,uint8_t

    pecific integral type limits Specifier Common Equivalent Signing Bits Bytes Minimum Value Maximum Va ...

  7. 一些平台无关的整型类型,int8_t,uint8_t....

    pecific integral type limits Specifier Common Equivalent Signing Bits Bytes Minimum Value Maximum Va ...

  8. stm32f10x.h文件分析理解

    今天再看过半年前自己写的这篇发现自己当时理解有误,stm32f10x.h与库开发并未存在太大关系,只是一个最为重要的寄存器地址到寄存器结构体变量的映射. stm32f10x.h 这个头文件是STM32 ...

  9. VC++6.0/VC6使用c99的stdint.h

    如果使用https://github.com/mattn/gntp-send/blob/master/include/msinttypes/stdint.h会报错: error C2733: seco ...

随机推荐

  1. phpstorm使用svn爆出“cannot load supported formats” 的解决

    从这 http://subversion.apache.org/packages.html  下载svn客户端二进制包后修改phpstorm配置中 svn的指向到你的svn可执行程序即可解决

  2. jquery与checkbox的checked属性的问题

    1.页面加载成功后,点击选中或取消选中该checkbox,checkbox属性里的checked属性不会根据该checkbox是否选中而变化 2.checkbox里的onchange或onclick方 ...

  3. 搭建Cocos Code IDE开发环境

    Cocos Code IDE是Cocos2d-x团队开发的,用于开发Cocos2d-JS和Cocos2d-x Lua绑定的游戏工具,它是基于Eclipse[ Eclipse 是一个开放源代码的.基于J ...

  4. 你一定能用的上的iOS第三方库

    点国内程序员不常用的热门iOS第三方库:看完,还敢自称"精通iOS开发"吗? 综合github上各个项目的关注度与具体使用情况,涵盖功能,UI,数据库,自动化测试,编程工具等类型, ...

  5. hdu 2057 A+B Again

    题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2057 题目分析:涉及到16进制内的加法,可以用%I64x直接来处理,要注意到16进制中负数是用补码来表 ...

  6. c++学习——类成员的访问权限

    成员的访问权限 Public: 任何人,尤其是那些要使用这个类库的客户程序员,都能访问那个紧跟在public 后面声明的成员. 默认的package: 在同一个目录里面的文件,并且都没有明确指明它是属 ...

  7. 利用二维矩阵求spanning tree

    只做了9个节点的,无权值,使用了n-1个=8个循环,非常麻烦.一级一级判断是否连接,连接及记录所在节点,以后不再使用,确保无回路. 验证后无回路,但只试过几种情况. 代码如下: #include< ...

  8. 理解ClassLoader基本原理

    当JVM(Java虚拟机)启动时,会形成由三个类加载器组成的初始类加载器层次结构:        bootstrap classloader                 |        exte ...

  9. Window Phone 8开发问题反思

    项目开发有段时间了,进入了阶段测试.然而在测试过程中bug连连不断,在抱怨产品需求的坑爹.不合理之外,我也一直在反思为什么会出现这么多Bug. 首先,由于项目开发的两个人都是新手,在刚刚认识MVVM架 ...

  10. Bootstrap轮播（carousel）插件中图片变形的终极解决方案——使用jqthumb.js

    在顶求网的首页中我使用了BootStrap的轮播(carousel)插件来展示文章中的图片.我在程序中自动抓取文章的第一张图片作为该轮播控件中要显示的图片,由于文章的图片大小不一,而轮播插件的大小基本 ...