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mwb1100 on 08/12/09


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cnsaturn


stdint.h


 / Published in: C
 

A public domain stdint.h. Original code is from a public domain version in the MinGW distribution. This one has been modified to fix a couple bugs (to make some macros 64-bit aware) and to make it compatible with VC6.

  1. /* ISO C9x 7.18 Integer types <stdint.h>
  2.  * Based on ISO/IEC SC22/WG14 9899 Committee draft (SC22 N2794)
  3.  *
  4.  * THIS SOFTWARE IS NOT COPYRIGHTED
  5.  *
  6.  * Contributor: Danny Smith <[email protected]>
  7.  *
  8.  * This source code is offered for use in the public domain. You may
  9.  * use, modify or distribute it freely.
  10.  *
  11.  * This code is distributed in the hope that it will be useful but
  12.  * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
  13.  * DISCLAIMED. This includes but is not limited to warranties of
  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  15.  *
  16.  * Date: 2000-12-02
  17.  *
  18.  * mwb: This was modified in the following ways:
  19.  *
  20.  * - make it compatible with Visual C++ 6 (which uses
  21.  * non-standard keywords and suffixes for 64-bit types)
  22.  * - some environments need stddef.h included (for wchar stuff?)
  23.  * - handle the fact that Microsoft's limits.h header defines
  24.  * SIZE_MAX
  25.  * - make corrections for SIZE_MAX, INTPTR_MIN, INTPTR_MAX, UINTPTR_MAX,
  26.  * PTRDIFF_MIN, PTRDIFF_MAX, SIG_ATOMIC_MIN, and SIG_ATOMIC_MAX
  27.  * to be 64-bit aware.
  28.  */
  29.  
  30.  
  31. #ifndef _STDINT_H
  32. #define _STDINT_H
  33. #define __need_wint_t
  34. #define __need_wchar_t
  35. #include <wchar.h>
  36. #include <stddef.h>
  37.  
  38. #if _MSC_VER && (_MSC_VER < 1300)
  39. /* using MSVC 6 or earlier - no "long long" type, but might have _int64 type */
  40. #define __STDINT_LONGLONG __int64
  41. #define __STDINT_LONGLONG_SUFFIX i64
  42. #else
  43. #define __STDINT_LONGLONG long long
  44. #define __STDINT_LONGLONG_SUFFIX LL
  45. #endif
  46.  
  47. #if !defined( PASTE)
  48. #define PASTE2( x, y) x##y
  49. #define PASTE( x, y) PASTE2( x, y)
  50. #endif /* PASTE */
  51.  
  52.  
  53. /* 7.18.1.1 Exact-width integer types */
  54. typedef signed char int8_t;
  55. typedef unsigned char uint8_t;
  56. typedef short int16_t;
  57. typedef unsigned short uint16_t;
  58. typedef int int32_t;
  59. typedef unsigned uint32_t;
  60. typedef __STDINT_LONGLONG int64_t;
  61. typedef unsigned __STDINT_LONGLONG uint64_t;
  62.  
  63. /* 7.18.1.2 Minimum-width integer types */
  64. typedef signed char int_least8_t;
  65. typedef unsigned char uint_least8_t;
  66. typedef short int_least16_t;
  67. typedef unsigned short uint_least16_t;
  68. typedef int int_least32_t;
  69. typedef unsigned uint_least32_t;
  70. typedef __STDINT_LONGLONG int_least64_t;
  71. typedef unsigned __STDINT_LONGLONG uint_least64_t;
  72.  
  73. /* 7.18.1.3 Fastest minimum-width integer types
  74.  * Not actually guaranteed to be fastest for all purposes
  75.  * Here we use the exact-width types for 8 and 16-bit ints.
  76.  */
  77. typedef char int_fast8_t;
  78. typedef unsigned char uint_fast8_t;
  79. typedef short int_fast16_t;
  80. typedef unsigned short uint_fast16_t;
  81. typedef int int_fast32_t;
  82. typedef unsigned int uint_fast32_t;
  83. typedef __STDINT_LONGLONG int_fast64_t;
  84. typedef unsigned __STDINT_LONGLONG uint_fast64_t;
  85.  
  86. /* 7.18.1.4 Integer types capable of holding object pointers */
  87. #ifndef _INTPTR_T_DEFINED
  88. #define _INTPTR_T_DEFINED
  89. #ifdef _WIN64
  90. typedef __STDINT_LONGLONG intptr_t
  91. #else
  92. typedef int intptr_t;
  93. #endif /* _WIN64 */
  94. #endif /* _INTPTR_T_DEFINED */
  95.  
  96. #ifndef _UINTPTR_T_DEFINED
  97. #define _UINTPTR_T_DEFINED
  98. #ifdef _WIN64
  99. typedef unsigned __STDINT_LONGLONG uintptr_t
  100. #else
  101. typedef unsigned int uintptr_t;
  102. #endif /* _WIN64 */
  103. #endif /* _UINTPTR_T_DEFINED */
  104.  
  105. /* 7.18.1.5 Greatest-width integer types */
  106. typedef __STDINT_LONGLONG intmax_t;
  107. typedef unsigned __STDINT_LONGLONG uintmax_t;
  108.  
  109. /* 7.18.2 Limits of specified-width integer types */
  110. #if !defined ( __cplusplus) || defined (__STDC_LIMIT_MACROS)
  111.  
  112. /* 7.18.2.1 Limits of exact-width integer types */
  113. #define INT8_MIN (-128)
  114. #define INT16_MIN (-32768)
  115. #define INT32_MIN (-2147483647 - 1)
  116. #define INT64_MIN (PASTE( -9223372036854775807, __STDINT_LONGLONG_SUFFIX) - 1)
  117.  
  118. #define INT8_MAX 127
  119. #define INT16_MAX 32767
  120. #define INT32_MAX 2147483647
  121. #define INT64_MAX (PASTE( 9223372036854775807, __STDINT_LONGLONG_SUFFIX))
  122.  
  123. #define UINT8_MAX 0xff /* 255U */
  124. #define UINT16_MAX 0xffff /* 65535U */
  125. #define UINT32_MAX 0xffffffff /* 4294967295U */
  126. #define UINT64_MAX (PASTE( 0xffffffffffffffffU, __STDINT_LONGLONG_SUFFIX)) /* 18446744073709551615ULL */
  127.  
  128. /* 7.18.2.2 Limits of minimum-width integer types */
  129. #define INT_LEAST8_MIN INT8_MIN
  130. #define INT_LEAST16_MIN INT16_MIN
  131. #define INT_LEAST32_MIN INT32_MIN
  132. #define INT_LEAST64_MIN INT64_MIN
  133.  
  134. #define INT_LEAST8_MAX INT8_MAX
  135. #define INT_LEAST16_MAX INT16_MAX
  136. #define INT_LEAST32_MAX INT32_MAX
  137. #define INT_LEAST64_MAX INT64_MAX
  138.  
  139. #define UINT_LEAST8_MAX UINT8_MAX
  140. #define UINT_LEAST16_MAX UINT16_MAX
  141. #define UINT_LEAST32_MAX UINT32_MAX
  142. #define UINT_LEAST64_MAX UINT64_MAX
  143.  
  144. /* 7.18.2.3 Limits of fastest minimum-width integer types */
  145. #define INT_FAST8_MIN INT8_MIN
  146. #define INT_FAST16_MIN INT16_MIN
  147. #define INT_FAST32_MIN INT32_MIN
  148. #define INT_FAST64_MIN INT64_MIN
  149.  
  150. #define INT_FAST8_MAX INT8_MAX
  151. #define INT_FAST16_MAX INT16_MAX
  152. #define INT_FAST32_MAX INT32_MAX
  153. #define INT_FAST64_MAX INT64_MAX
  154.  
  155. #define UINT_FAST8_MAX UINT8_MAX
  156. #define UINT_FAST16_MAX UINT16_MAX
  157. #define UINT_FAST32_MAX UINT32_MAX
  158. #define UINT_FAST64_MAX UINT64_MAX
  159.  
  160. /* 7.18.2.4 Limits of integer types capable of holding
  161.   object pointers */
  162. #ifdef _WIN64
  163. #define INTPTR_MIN INT64_MIN
  164. #define INTPTR_MAX INT64_MAX
  165. #define UINTPTR_MAX UINT64_MAX
  166. #else
  167. #define INTPTR_MIN INT32_MIN
  168. #define INTPTR_MAX INT32_MAX
  169. #define UINTPTR_MAX UINT32_MAX
  170. #endif /* _WIN64 */
  171.  
  172. /* 7.18.2.5 Limits of greatest-width integer types */
  173. #define INTMAX_MIN INT64_MIN
  174. #define INTMAX_MAX INT64_MAX
  175. #define UINTMAX_MAX UINT64_MAX
  176.  
  177. /* 7.18.3 Limits of other integer types */
  178. #define PTRDIFF_MIN INTPTR_MIN
  179. #define PTRDIFF_MAX INTPTR_MAX
  180.  
  181. #define SIG_ATOMIC_MIN INTPTR_MIN
  182. #define SIG_ATOMIC_MAX INTPTR_MAX
  183.  
  184. /* we need to check for SIZE_MAX already defined because MS defines it in limits.h */
  185. #ifndef SIZE_MAX
  186. #define SIZE_MAX UINTPTR_MAX
  187. #endif
  188.  
  189. #ifndef WCHAR_MIN /* also in wchar.h */
  190. #define WCHAR_MIN 0
  191. #define WCHAR_MAX ((wchar_t)-1) /* UINT16_MAX */
  192. #endif
  193.  
  194. /*
  195.  * wint_t is unsigned short for compatibility with MS runtime
  196.  */
  197. #define WINT_MIN 0
  198. #define WINT_MAX ((wint_t)-1) /* UINT16_MAX */
  199.  
  200. #endif /* !defined ( __cplusplus) || defined __STDC_LIMIT_MACROS */
  201.  
  202.  
  203. /* 7.18.4 Macros for integer constants */
  204. #if !defined ( __cplusplus) || defined (__STDC_CONSTANT_MACROS)
  205.  
  206. /* 7.18.4.1 Macros for minimum-width integer constants
  207.  
  208.   Accoding to Douglas Gwyn <[email protected]>:
  209. "This spec was changed in ISO/IEC 9899:1999 TC1; in ISO/IEC
  210. 9899:1999 as initially published, the expansion was required
  211. to be an integer constant of precisely matching type, which
  212. is impossible to accomplish for the shorter types on most
  213. platforms, because C99 provides no standard way to designate
  214. an integer constant with width less than that of type int.
  215. TC1 changed this to require just an integer constant
  216. *expression* with *promoted* type."
  217. */
  218.  
  219. #define INT8_C(val) ((int8_t) + (val))
  220. #define UINT8_C(val) ((uint8_t) + (val##U))
  221. #define INT16_C(val) ((int16_t) + (val))
  222. #define UINT16_C(val) ((uint16_t) + (val##U))
  223.  
  224. #define INT32_C(val) val##L
  225. #define UINT32_C(val) val##UL
  226. #define INT64_C(val) (PASTE( val, __STDINT_LONGLONG_SUFFIX))
  227. #define UINT64_C(val)(PASTE( PASTE( val, U), __STDINT_LONGLONG_SUFFIX))
  228.  
  229. /* 7.18.4.2 Macros for greatest-width integer constants */
  230. #define INTMAX_C(val) INT64_C(val)
  231. #define UINTMAX_C(val) UINT64_C(val)
  232.  
  233. #endif /* !defined ( __cplusplus) || defined __STDC_CONSTANT_MACROS */
  234.  
  235. #endif

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