The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/include/stdint.h

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    1 /*      stdint.h - Standard sized integer types.        Author: Kees J. Bot
    2  *                                                              4 Oct 2003
    3  *
    4  * Assumption:  Long is the biggest type.
    5  * Bug:         C99 requires a 64 bit type, and long isn't 64 bits yet, and
    6  *              will never be 64 bits under 16-bits Minix.
    7  * Omission:    Limits like PTR_DIFF_MAX not here yet, maybe <limits.h>?
    8  */
    9 
   10 #ifndef _STDINT_H
   11 #define _STDINT_H
   12 
   13 #ifndef _MINIX__TYPES_H
   14 #include <sys/types.h>
   15 #endif
   16 #include <minix/sys_config.h>
   17 
   18 #if (_WORD_SIZE != 2 && _WORD_SIZE != 4) || \
   19         (_PTR_SIZE != _WORD_SIZE && _PTR_SIZE != 2*_WORD_SIZE)
   20 #error Odd word or pointer sizes
   21 #endif
   22 
   23 /* Integer types of precisely the given bitsize. */
   24 typedef i8_t    int8_t;
   25 typedef i16_t   int16_t;
   26 typedef i32_t   int32_t;
   27 #if _WORD_SIZE > 2 && __L64
   28 typedef i64_t   int64_t;
   29 #endif
   30 
   31 typedef u8_t    uint8_t;
   32 typedef u16_t   uint16_t;
   33 typedef u32_t   uint32_t;
   34 #if _WORD_SIZE > 2 && __L64
   35 typedef u64_t   uint64_t;
   36 #endif
   37 
   38 /* Integer types of at least the given bitsize. */
   39 typedef int8_t          int_least8_t;
   40 typedef int16_t         int_least16_t;
   41 typedef int32_t         int_least32_t;
   42 #if _WORD_SIZE > 2 && __L64
   43 typedef int64_t         int_least64_t;
   44 #endif
   45 
   46 typedef uint8_t         uint_least8_t;
   47 typedef uint16_t        uint_least16_t;
   48 typedef uint32_t        uint_least32_t;
   49 #if _WORD_SIZE > 2 && __L64
   50 typedef uint64_t        uint_least64_t;
   51 #endif
   52 
   53 /* Fast integer types of at least the given bitsize. */
   54 #if _WORD_SIZE == 2
   55 typedef int16_t         int_fast8_t;
   56 typedef int16_t         int_fast16_t;
   57 #else
   58 typedef int32_t         int_fast8_t;
   59 typedef int32_t         int_fast16_t;
   60 #endif
   61 typedef int32_t         int_fast32_t;
   62 #if _WORD_SIZE > 2 && __L64
   63 typedef int64_t         int_fast64_t;
   64 #endif
   65 
   66 #if _WORD_SIZE == 2
   67 typedef uint16_t        uint_fast8_t;
   68 typedef uint16_t        uint_fast16_t;
   69 #else
   70 typedef uint32_t        uint_fast8_t;
   71 typedef uint32_t        uint_fast16_t;
   72 #endif
   73 typedef uint32_t        uint_fast32_t;
   74 #if _WORD_SIZE > 2 && __L64
   75 typedef uint64_t        uint_fast64_t;
   76 #endif
   77 
   78 /* Integer type capable of holding a pointer and the largest integer type. */
   79 #if _PTR_SIZE == _WORD_SIZE
   80 typedef int             intptr_t;
   81 typedef unsigned        uintptr_t;
   82 #elif _PTR_SIZE == 2*_WORD_SIZE
   83 typedef long            intptr_t;
   84 typedef unsigned long   uintptr_t;
   85 #endif
   86 typedef long            intmax_t;
   87 typedef unsigned long   uintmax_t;
   88 
   89 #if !__cplusplus || defined(__STDC_LIMIT_MACROS)
   90 #ifndef _LIMITS_H
   91 #include <limits.h>
   92 #endif
   93 
   94 /* Range definitions for each of the above types conform <limits.h>. */
   95 #define INT8_MIN                (-INT8_MAX-1)
   96 #define INT16_MIN               (-INT16_MAX-1)
   97 #define INT32_MIN               (-INT32_MAX-1)
   98 #if _WORD_SIZE > 2 && __L64
   99 #define INT64_MIN               (-INT64_MAX-1)
  100 #endif
  101 
  102 #define INT8_MAX                127
  103 #define INT16_MAX               32767
  104 #define INT32_MAX               2147483647
  105 #if _WORD_SIZE > 2 && __L64
  106 #define INT64_MAX               9223372036854775807
  107 #endif
  108 
  109 #define UINT8_MAX               255
  110 #define UINT16_MAX              65535
  111 #define UINT32_MAX              4294967295
  112 #if _WORD_SIZE > 2 && __L64
  113 #define UINT64_MAX              18446744073709551615
  114 #endif
  115 
  116 #define INT_LEAST8_MIN          INT8_MIN
  117 #define INT_LEAST16_MIN         INT16_MIN
  118 #define INT_LEAST32_MIN         INT32_MIN
  119 #if _WORD_SIZE > 2 && __L64
  120 #define INT_LEAST64_MIN         INT64_MIN
  121 #endif
  122 
  123 #define INT_LEAST8_MAX          INT8_MAX
  124 #define INT_LEAST16_MAX         INT16_MAX
  125 #define INT_LEAST32_MAX         INT32_MAX
  126 #if _WORD_SIZE > 2 && __L64
  127 #define INT_LEAST64_MAX         INT64_MAX
  128 #endif
  129 
  130 #define UINT_LEAST8_MAX         UINT8_MAX
  131 #define UINT_LEAST16_MAX        UINT16_MAX
  132 #define UINT_LEAST32_MAX        UINT32_MAX
  133 #if _WORD_SIZE > 2 && __L64
  134 #define UINT_LEAST64_MAX        UINT64_MAX
  135 #endif
  136 
  137 #define INT_FAST8_MIN           (-INT_FAST8_MAX-1)
  138 #define INT_FAST16_MIN          (-INT_FAST16_MAX-1)
  139 #define INT_FAST32_MIN          INT32_MIN
  140 #if _WORD_SIZE > 2 && __L64
  141 #define INT_FAST64_MIN          INT64_MIN
  142 #endif
  143 
  144 #if _WORD_SIZE == 2
  145 #define INT_FAST8_MAX           INT16_MAX
  146 #define INT_FAST16_MAX          INT16_MAX
  147 #else
  148 #define INT_FAST8_MAX           INT32_MAX
  149 #define INT_FAST16_MAX          INT32_MAX
  150 #endif
  151 #define INT_FAST32_MAX          INT32_MAX
  152 #if _WORD_SIZE > 2 && __L64
  153 #define INT_FAST64_MAX          INT64_MAX
  154 #endif
  155 
  156 #if _WORD_SIZE == 2
  157 #define UINT_FAST8_MAX          UINT16_MAX
  158 #define UINT_FAST16_MAX         UINT16_MAX
  159 #else
  160 #define UINT_FAST8_MAX          UINT32_MAX
  161 #define UINT_FAST16_MAX         UINT32_MAX
  162 #endif
  163 #define UINT_FAST32_MAX         UINT32_MAX
  164 #if _WORD_SIZE > 2 && __L64
  165 #define UINT_FAST64_MAX         UINT64_MAX
  166 #endif
  167 
  168 #if _PTR_SIZE == _WORD_SIZE
  169 #define INTPTR_MIN              INT_MIN
  170 #define INTPTR_MAX              INT_MAX
  171 #define UINTPTR_MAX             UINT_MAX
  172 #elif _PTR_SIZE > _WORD_SIZE
  173 #define INTPTR_MIN              LONG_MIN
  174 #define INTPTR_MAX              LONG_MAX
  175 #define UINTPTR_MAX             ULONG_MAX
  176 #endif
  177 #define INTMAX_MIN              LONG_MIN
  178 #define INTMAX_MAX              LONG_MAX
  179 #define UINTMAX_MAX             ULONG_MAX
  180 
  181 #endif /* !__cplusplus || __STDC_LIMIT_MACROS */
  182 
  183 #ifndef __CONCAT
  184 #define __CONCAT(x,y)   x ## y
  185 #endif
  186 
  187 /* Constants of the proper type. */
  188 #define INT8_C(c)       c
  189 #define INT16_C(c)      c
  190 #if _WORD_SIZE == 2
  191 #define INT32_C(c)      __CONCAT(c,l)
  192 #else
  193 #define INT32_C(c)      c
  194 #endif
  195 #if _WORD_SIZE > 2 && __L64
  196 #define INT64_C(c)      __CONCAT(c,l)
  197 #endif
  198 
  199 #define UINT8_C(c)      __CONCAT(c,u)
  200 #define UINT16_C(c)     __CONCAT(c,u)
  201 #if _WORD_SIZE == 2
  202 #define UINT32_C(c)     __CONCAT(c,lu)
  203 #else
  204 #define UINT32_C(c)     __CONCAT(c,u)
  205 #endif
  206 #if _WORD_SIZE > 2 && __L64
  207 #define UINT64_C(c)     __CONCAT(c,lu)
  208 #endif
  209 
  210 #if _WORD_SIZE == 2 || !__L64
  211 #define INTMAX_C(c)     INT32_C(c)
  212 #define UINTMAX_C(c)    UINT32_C(c)
  213 #else
  214 #define INTMAX_C(c)     INT64_C(c)
  215 #define UINTMAX_C(c)    UINT64_C(c)
  216 #endif
  217 
  218 #endif /* _STDINT_H */
  219 
  220 /*
  221  * $PchId: stdint.h,v 1.2 2005/01/27 17:32:00 philip Exp $
  222  */

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