stdint.h 5.7 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184
  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. #ifndef _STDINT_H
  19. #define _STDINT_H
  20. /* 7.18.1.1 Exact-width integer types */
  21. typedef signed char int8_t;
  22. typedef unsigned char uint8_t;
  23. typedef short int16_t;
  24. typedef unsigned short uint16_t;
  25. typedef int int32_t;
  26. typedef unsigned uint32_t;
  27. typedef long long int64_t;
  28. typedef unsigned long long uint64_t;
  29. /* 7.18.1.2 Minimum-width integer types */
  30. typedef signed char int_least8_t;
  31. typedef unsigned char uint_least8_t;
  32. typedef short int_least16_t;
  33. typedef unsigned short uint_least16_t;
  34. typedef int int_least32_t;
  35. typedef unsigned uint_least32_t;
  36. typedef long long int_least64_t;
  37. typedef unsigned long long uint_least64_t;
  38. /* 7.18.1.3 Fastest minimum-width integer types
  39. * Not actually guaranteed to be fastest for all purposes
  40. * Here we use the exact-width types for 8 and 16-bit ints.
  41. */
  42. typedef char int_fast8_t;
  43. typedef unsigned char uint_fast8_t;
  44. typedef short int_fast16_t;
  45. typedef unsigned short uint_fast16_t;
  46. typedef int int_fast32_t;
  47. typedef unsigned int uint_fast32_t;
  48. typedef long long int_fast64_t;
  49. typedef unsigned long long uint_fast64_t;
  50. /* 7.18.1.4 Integer types capable of holding object pointers */
  51. typedef int intptr_t;
  52. typedef unsigned uintptr_t;
  53. /* 7.18.1.5 Greatest-width integer types */
  54. typedef long long intmax_t;
  55. typedef unsigned long long uintmax_t;
  56. /* 7.18.2 Limits of specified-width integer types */
  57. #if !defined ( __cplusplus) || defined (__STDC_LIMIT_MACROS)
  58. /* 7.18.2.1 Limits of exact-width integer types */
  59. #define INT8_MIN (-128)
  60. #define INT16_MIN (-32768)
  61. #define INT32_MIN (-2147483647 - 1)
  62. #define INT64_MIN (-9223372036854775807LL - 1)
  63. #define INT8_MAX 127
  64. #define INT16_MAX 32767
  65. #define INT32_MAX 2147483647
  66. #define INT64_MAX 9223372036854775807LL
  67. #define UINT8_MAX 0xff /* 255U */
  68. #define UINT16_MAX 0xffff /* 65535U */
  69. #define UINT32_MAX 0xffffffff /* 4294967295U */
  70. #define UINT64_MAX 0xffffffffffffffffULL /* 18446744073709551615ULL */
  71. /* 7.18.2.2 Limits of minimum-width integer types */
  72. #define INT_LEAST8_MIN INT8_MIN
  73. #define INT_LEAST16_MIN INT16_MIN
  74. #define INT_LEAST32_MIN INT32_MIN
  75. #define INT_LEAST64_MIN INT64_MIN
  76. #define INT_LEAST8_MAX INT8_MAX
  77. #define INT_LEAST16_MAX INT16_MAX
  78. #define INT_LEAST32_MAX INT32_MAX
  79. #define INT_LEAST64_MAX INT64_MAX
  80. #define UINT_LEAST8_MAX UINT8_MAX
  81. #define UINT_LEAST16_MAX UINT16_MAX
  82. #define UINT_LEAST32_MAX UINT32_MAX
  83. #define UINT_LEAST64_MAX UINT64_MAX
  84. /* 7.18.2.3 Limits of fastest minimum-width integer types */
  85. #define INT_FAST8_MIN INT8_MIN
  86. #define INT_FAST16_MIN INT16_MIN
  87. #define INT_FAST32_MIN INT32_MIN
  88. #define INT_FAST64_MIN INT64_MIN
  89. #define INT_FAST8_MAX INT8_MAX
  90. #define INT_FAST16_MAX INT16_MAX
  91. #define INT_FAST32_MAX INT32_MAX
  92. #define INT_FAST64_MAX INT64_MAX
  93. #define UINT_FAST8_MAX UINT8_MAX
  94. #define UINT_FAST16_MAX UINT16_MAX
  95. #define UINT_FAST32_MAX UINT32_MAX
  96. #define UINT_FAST64_MAX UINT64_MAX
  97. /* 7.18.2.4 Limits of integer types capable of holding
  98. object pointers */
  99. #define INTPTR_MIN INT32_MIN
  100. #define INTPTR_MAX INT32_MAX
  101. #define UINTPTR_MAX UINT32_MAX
  102. /* 7.18.2.5 Limits of greatest-width integer types */
  103. #define INTMAX_MIN INT64_MIN
  104. #define INTMAX_MAX INT64_MAX
  105. #define UINTMAX_MAX UINT64_MAX
  106. /* 7.18.3 Limits of other integer types */
  107. #define PTRDIFF_MIN INT32_MIN
  108. #define PTRDIFF_MAX INT32_MAX
  109. #define SIG_ATOMIC_MIN INT32_MIN
  110. #define SIG_ATOMIC_MAX INT32_MAX
  111. #define SIZE_MAX UINT32_MAX
  112. #ifndef WCHAR_MIN /* also in wchar.h */
  113. #define WCHAR_MIN 0
  114. #define WCHAR_MAX ((wchar_t)-1) /* UINT16_MAX */
  115. #endif
  116. /*
  117. * wint_t is unsigned int in __MINGW32__,
  118. * but unsigned short in MS runtime
  119. */
  120. #define WINT_MIN 0
  121. #define WINT_MAX UINT32_MAX
  122. #endif /* !defined ( __cplusplus) || defined __STDC_LIMIT_MACROS */
  123. /* 7.18.4 Macros for integer constants */
  124. #if !defined ( __cplusplus) || defined (__STDC_CONSTANT_MACROS)
  125. /* 7.18.4.1 Macros for minimum-width integer constants
  126. Accoding to Douglas Gwyn <[email protected]>:
  127. "This spec was changed in ISO/IEC 9899:1999 TC1; in ISO/IEC
  128. 9899:1999 as initially published, the expansion was required
  129. to be an integer constant of precisely matching type, which
  130. is impossible to accomplish for the shorter types on most
  131. platforms, because C99 provides no standard way to designate
  132. an integer constant with width less than that of type int.
  133. TC1 changed this to require just an integer constant
  134. *expression* with *promoted* type."
  135. The trick used here is from Clive D W Feather.
  136. */
  137. #define INT8_C(val) (INT_LEAST8_MAX-INT_LEAST8_MAX+(val))
  138. #define INT16_C(val) (INT_LEAST16_MAX-INT_LEAST16_MAX+(val))
  139. #define INT32_C(val) (INT_LEAST32_MAX-INT_LEAST32_MAX+(val))
  140. #define INT64_C(val) (INT_LEAST64_MAX-INT_LEAST64_MAX+(val))
  141. #define UINT8_C(val) (UINT_LEAST8_MAX-UINT_LEAST8_MAX+(val))
  142. #define UINT16_C(val) (UINT_LEAST16_MAX-UINT_LEAST16_MAX+(val))
  143. #define UINT32_C(val) (UINT_LEAST32_MAX-UINT_LEAST32_MAX+(val))
  144. #define UINT64_C(val) (UINT_LEAST64_MAX-UINT_LEAST64_MAX+(val))
  145. /* 7.18.4.2 Macros for greatest-width integer constants */
  146. #define INTMAX_C(val) (INTMAX_MAX-INTMAX_MAX+(val))
  147. #define UINTMAX_C(val) (UINTMAX_MAX-UINTMAX_MAX+(val))
  148. #endif /* !defined ( __cplusplus) || defined __STDC_CONSTANT_MACROS */
  149. #endif